CVE-2024-43834

一、漏洞信息
 漏洞编号：[CVE-2024-43834](https://nvd.nist.gov/vuln/detail/CVE-2024-43834)
 漏洞归属组件：[kernel](https://gitee.com/src-openeuler/kernel)
 漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.0,6.1.14,6.1.19,6.1.5,6.1.6,6.1.8,6.4.0,6.6.0
 CVSS V3.0分值：
  BaseScore：0.0 None
  Vector：CVSS：3.0/
 漏洞简述：
  In the Linux kernel, the following vulnerability has been resolved:xdp: fix invalid wait context of page_pool_destroy()If the driver uses a page pool, it creates a page pool withpage_pool_create().The reference count of page pool is 1 as default.A page pool will be destroyed only when a reference count reaches 0.page_pool_destroy() is used to destroy page pool, it decreases areference count.When a page pool is destroyed, ->disconnect() is called, which ismem_allocator_disconnect().This function internally acquires mutex_lock().If the driver uses XDP, it registers a memory model withxdp_rxq_info_reg_mem_model().The xdp_rxq_info_reg_mem_model() internally increases a page poolreference count if a memory model is a page pool.Now the reference count is 2.To destroy a page pool, the driver should call both page_pool_destroy()and xdp_unreg_mem_model().The xdp_unreg_mem_model() internally calls page_pool_destroy().Only page_pool_destroy() decreases a reference count.If a driver calls page_pool_destroy() then xdp_unreg_mem_model(), wewill face an invalid wait context warning.Because xdp_unreg_mem_model() calls page_pool_destroy() withrcu_read_lock().The page_pool_destroy() internally acquires mutex_lock().Splat looks like:=============================[ BUG: Invalid wait context ]6.10.0-rc6+ #4 Tainted: G W-----------------------------ethtool/1806 is trying to lock:ffffffff90387b90 (mem_id_lock){+.+.}-{4:4}, at: mem_allocator_disconnect+0x73/0x150other info that might help us debug this:context-{5:5}3 locks held by ethtool/1806:stack backtrace:CPU: 0 PID: 1806 Comm: ethtool Tainted: G W 6.10.0-rc6+ #4 f916f41f172891c800f2fedHardware name: ASUS System Product Name/PRIME Z690-P D4, BIOS 0603 11/01/2021Call Trace:<TASK>dump_stack_lvl+0x7e/0xc0__lock_acquire+0x1681/0x4de0? _printk+0x64/0xe0? __pfx_mark_lock.part.0+0x10/0x10? __pfx___lock_acquire+0x10/0x10lock_acquire+0x1b3/0x580? mem_allocator_disconnect+0x73/0x150? __wake_up_klogd.part.0+0x16/0xc0? __pfx_lock_acquire+0x10/0x10? dump_stack_lvl+0x91/0xc0__mutex_lock+0x15c/0x1690? mem_allocator_disconnect+0x73/0x150? __pfx_prb_read_valid+0x10/0x10? mem_allocator_disconnect+0x73/0x150? __pfx_llist_add_batch+0x10/0x10? console_unlock+0x193/0x1b0? lockdep_hardirqs_on+0xbe/0x140? __pfx___mutex_lock+0x10/0x10? tick_nohz_tick_stopped+0x16/0x90? __irq_work_queue_local+0x1e5/0x330? irq_work_queue+0x39/0x50? __wake_up_klogd.part.0+0x79/0xc0? mem_allocator_disconnect+0x73/0x150mem_allocator_disconnect+0x73/0x150? __pfx_mem_allocator_disconnect+0x10/0x10? mark_held_locks+0xa5/0xf0? rcu_is_watching+0x11/0xb0page_pool_release+0x36e/0x6d0page_pool_destroy+0xd7/0x440xdp_unreg_mem_model+0x1a7/0x2a0? __pfx_xdp_unreg_mem_model+0x10/0x10? kfree+0x125/0x370? bnxt_free_ring.isra.0+0x2eb/0x500? bnxt_free_mem+0x5ac/0x2500xdp_rxq_info_unreg+0x4a/0xd0bnxt_free_mem+0x1356/0x2500bnxt_close_nic+0xf0/0x3b0? __pfx_bnxt_close_nic+0x10/0x10? ethnl_parse_bit+0x2c6/0x6d0? __pfx___nla_validate_parse+0x10/0x10? __pfx_ethnl_parse_bit+0x10/0x10bnxt_set_features+0x2a8/0x3e0__netdev_update_features+0x4dc/0x1370? ethnl_parse_bitset+0x4ff/0x750? __pfx_ethnl_parse_bitset+0x10/0x10? __pfx___netdev_update_features+0x10/0x10? mark_held_locks+0xa5/0xf0? _raw_spin_unlock_irqrestore+0x42/0x70? __pm_runtime_resume+0x7d/0x110ethnl_set_features+0x32d/0xa20To fix this problem, it uses rhashtable_lookup_fast() instead ofrhashtable_lookup() with rcu_read_lock().Using xa without rcu_read_lock() here is safe.xa is freed by __xdp_mem_allocator_rcu_free() and this is called bycall_rcu() of mem_xa_remove().The mem_xa_remove() is called by page_pool_destroy() if a referencecount reaches 0.The xa is already protected by the reference count mechanism well in thecontrol plane.So removing rcu_read_lock() for page_pool_destroy() is safe.
 漏洞公开时间：2024-08-17 18:15:09
 漏洞创建时间：2024-08-17 18:58:25
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2024-43834
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/12144069209eec7f2090ce9afa15acdcc2c2a537 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/3fc1be360b99baeea15cdee3cf94252cd3a72d26 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/59a931c5b732ca5fc2ca727f5a72aeabaafa85ec |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/6c390ef198aa69795427a5cb5fd7cb4bc7e6cd7a |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/be9d08ff102df3ac4f66e826ea935cf3af63a4bd |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/bf0ce5aa5f2525ed1b921ba36de96e458e77f482 |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-43834 | https://bugzilla.suse.com/show_bug.cgi?id=1229314 |
| suse_bugzilla | https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-43834.mbox | https://bugzilla.suse.com/show_bug.cgi?id=1229314 |
| suse_bugzilla | https://git.kernel.org/stable/c/3fc1be360b99baeea15cdee3cf94252cd3a72d26 | https://bugzilla.suse.com/show_bug.cgi?id=1229314 |
| suse_bugzilla | https://git.kernel.org/stable/c/bf0ce5aa5f2525ed1b921ba36de96e458e77f482 | https://bugzilla.suse.com/show_bug.cgi?id=1229314 |
| suse_bugzilla | https://git.kernel.org/stable/c/12144069209eec7f2090ce9afa15acdcc2c2a537 | https://bugzilla.suse.com/show_bug.cgi?id=1229314 |
| suse_bugzilla | https://git.kernel.org/stable/c/59a931c5b732ca5fc2ca727f5a72aeabaafa85ec | https://bugzilla.suse.com/show_bug.cgi?id=1229314 |
| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2024-43834 | https://bugzilla.suse.com/show_bug.cgi?id=1229314 |
| suse_bugzilla | https://git.kernel.org/stable/c/6c390ef198aa69795427a5cb5fd7cb4bc7e6cd7a | https://bugzilla.suse.com/show_bug.cgi?id=1229314 |
| suse_bugzilla | https://git.kernel.org/stable/c/be9d08ff102df3ac4f66e826ea935cf3af63a4bd | https://bugzilla.suse.com/show_bug.cgi?id=1229314 |
| ubuntu | https://www.cve.org/CVERecord?id=CVE-2024-43834 | https://ubuntu.com/security/CVE-2024-43834 |
| ubuntu | https://git.kernel.org/linus/59a931c5b732ca5fc2ca727f5a72aeabaafa85ec (6.11-rc1) | https://ubuntu.com/security/CVE-2024-43834 |
| ubuntu | https://git.kernel.org/stable/c/3fc1be360b99baeea15cdee3cf94252cd3a72d26 | https://ubuntu.com/security/CVE-2024-43834 |
| ubuntu | https://git.kernel.org/stable/c/bf0ce5aa5f2525ed1b921ba36de96e458e77f482 | https://ubuntu.com/security/CVE-2024-43834 |
| ubuntu | https://git.kernel.org/stable/c/12144069209eec7f2090ce9afa15acdcc2c2a537 | https://ubuntu.com/security/CVE-2024-43834 |
| ubuntu | https://git.kernel.org/stable/c/59a931c5b732ca5fc2ca727f5a72aeabaafa85ec | https://ubuntu.com/security/CVE-2024-43834 |
| ubuntu | https://git.kernel.org/stable/c/be9d08ff102df3ac4f66e826ea935cf3af63a4bd | https://ubuntu.com/security/CVE-2024-43834 |
| ubuntu | https://git.kernel.org/stable/c/6c390ef198aa69795427a5cb5fd7cb4bc7e6cd7a | https://ubuntu.com/security/CVE-2024-43834 |
| ubuntu | https://nvd.nist.gov/vuln/detail/CVE-2024-43834 | https://ubuntu.com/security/CVE-2024-43834 |
| ubuntu | https://launchpad.net/bugs/cve/CVE-2024-43834 | https://ubuntu.com/security/CVE-2024-43834 |
| ubuntu | https://security-tracker.debian.org/tracker/CVE-2024-43834 | https://ubuntu.com/security/CVE-2024-43834 |
| debian |  | https://security-tracker.debian.org/tracker/CVE-2024-43834 |
| cve_search |  | https://git.kernel.org/stable/c/3fc1be360b99baeea15cdee3cf94252cd3a72d26 |
| cve_search |  | https://git.kernel.org/stable/c/bf0ce5aa5f2525ed1b921ba36de96e458e77f482 |
| cve_search |  | https://git.kernel.org/stable/c/12144069209eec7f2090ce9afa15acdcc2c2a537 |
| cve_search |  | https://git.kernel.org/stable/c/59a931c5b732ca5fc2ca727f5a72aeabaafa85ec |
| mageia |  | http://advisories.mageia.org/MGASA-2024-0309.html |

</details>

漏洞分析指导链接：
  https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
 漏洞数据来源:
  openBrain开源漏洞感知系统
 漏洞补丁信息：
  <details>
<summary>详情(点击展开)</summary>

| 影响的包 | 修复版本 | 修复补丁 | 问题引入补丁 | 来源  |
| ------- | -------- | ------- | -------- | --------- |
| linux |  | https://git.kernel.org/linus/59a931c5b732ca5fc2ca727f5a72aeabaafa85ec | https://git.kernel.org/linus/1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 | ubuntu |

</details>

二、漏洞分析结构反馈
 影响性分析说明：
  In the Linux kernel, the following vulnerability has been resolved:xdp: fix invalid wait context of page_pool_destroy()If the driver uses a page pool, it creates a page pool withpage_pool_create().The reference count of page pool is 1 as default.A page pool will be destroyed only when a reference count reaches 0.page_pool_destroy() is used to destroy page pool, it decreases areference count.When a page pool is destroyed, ->disconnect() is called, which ismem_allocator_disconnect().This function internally acquires mutex_lock().If the driver uses XDP, it registers a memory model withxdp_rxq_info_reg_mem_model().The xdp_rxq_info_reg_mem_model() internally increases a page poolreference count if a memory model is a page pool.Now the reference count is 2.To destroy a page pool, the driver should call both page_pool_destroy()and xdp_unreg_mem_model().The xdp_unreg_mem_model() internally calls page_pool_destroy().Only page_pool_destroy() decreases a reference count.If a driver calls page_pool_destroy() then xdp_unreg_mem_model(), wewill face an invalid wait context warning.Because xdp_unreg_mem_model() calls page_pool_destroy() withrcu_read_lock().The page_pool_destroy() internally acquires mutex_lock().Splat looks like:=============================[ BUG: Invalid wait context ]6.10.0-rc6+ #4 Tainted: G W-----------------------------ethtool/1806 is trying to lock:ffffffff90387b90 (mem_id_lock){+.+.}-{4:4}, at: mem_allocator_disconnect+0x73/0x150other info that might help us debug this:context-{5:5}3 locks held by ethtool/1806:stack backtrace:CPU: 0 PID: 1806 Comm: ethtool Tainted: G W 6.10.0-rc6+ #4 f916f41f172891c800f2fedHardware name: ASUS System Product Name/PRIME Z690-P D4, BIOS 0603 11/01/2021Call Trace:<TASK>dump_stack_lvl+0x7e/0xc0__lock_acquire+0x1681/0x4de0? _printk+0x64/0xe0? __pfx_mark_lock.part.0+0x10/0x10? __pfx___lock_acquire+0x10/0x10lock_acquire+0x1b3/0x580? mem_allocator_disconnect+0x73/0x150? __wake_up_klogd.part.0+0x16/0xc0? __pfx_lock_acquire+0x10/0x10? dump_stack_lvl+0x91/0xc0__mutex_lock+0x15c/0x1690? mem_allocator_disconnect+0x73/0x150? __pfx_prb_read_valid+0x10/0x10? mem_allocator_disconnect+0x73/0x150? __pfx_llist_add_batch+0x10/0x10? console_unlock+0x193/0x1b0? lockdep_hardirqs_on+0xbe/0x140? __pfx___mutex_lock+0x10/0x10? tick_nohz_tick_stopped+0x16/0x90? __irq_work_queue_local+0x1e5/0x330? irq_work_queue+0x39/0x50? __wake_up_klogd.part.0+0x79/0xc0? mem_allocator_disconnect+0x73/0x150mem_allocator_disconnect+0x73/0x150? __pfx_mem_allocator_disconnect+0x10/0x10? mark_held_locks+0xa5/0xf0? rcu_is_watching+0x11/0xb0page_pool_release+0x36e/0x6d0page_pool_destroy+0xd7/0x440xdp_unreg_mem_model+0x1a7/0x2a0? __pfx_xdp_unreg_mem_model+0x10/0x10? kfree+0x125/0x370? bnxt_free_ring.isra.0+0x2eb/0x500? bnxt_free_mem+0x5ac/0x2500xdp_rxq_info_unreg+0x4a/0xd0bnxt_free_mem+0x1356/0x2500bnxt_close_nic+0xf0/0x3b0? __pfx_bnxt_close_nic+0x10/0x10? ethnl_parse_bit+0x2c6/0x6d0? __pfx___nla_validate_parse+0x10/0x10? __pfx_ethnl_parse_bit+0x10/0x10bnxt_set_features+0x2a8/0x3e0__netdev_update_features+0x4dc/0x1370? ethnl_parse_bitset+0x4ff/0x750? __pfx_ethnl_parse_bitset+0x10/0x10? __pfx___netdev_update_features+0x10/0x10? mark_held_locks+0xa5/0xf0? _raw_spin_unlock_irqrestore+0x42/0x70? __pm_runtime_resume+0x7d/0x110ethnl_set_features+0x32d/0xa20To fix this problem, it uses rhashtable_lookup_fast() instead ofrhashtable_lookup() with rcu_read_lock().Using xa without rcu_read_lock() here is safe.xa is freed by __xdp_mem_allocator_rcu_free() and this is called bycall_rcu() of mem_xa_remove().The mem_xa_remove() is called by page_pool_destroy() if a referencecount reaches 0.The xa is already protected by the reference count mechanism well in thecontrol plane.So removing rcu_read_lock() for page_pool_destroy() is safe.
 openEuler评分：
  5.5
 Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
 受影响版本排查(受影响/不受影响)：
  1.openEuler-22.03-LTS-SP1(5.10.0):受影响
2.openEuler-22.03-LTS-SP3(5.10.0):受影响
3.openEuler-22.03-LTS-SP4(5.10.0):受影响
4.openEuler-24.03-LTS(6.6.0):受影响
5.openEuler-20.03-LTS-SP4(4.19.90):不受影响
6.master(6.6.0):不受影响
7.openEuler-24.03-LTS-Next(6.6.0):不受影响

修复是否涉及abi变化(是/否)：
  1.openEuler-20.03-LTS-SP4(4.19.90):否
2.openEuler-22.03-LTS-SP1(5.10.0):否
3.openEuler-22.03-LTS-SP3(5.10.0):否
4.master(6.6.0):否
5.openEuler-24.03-LTS(6.6.0):否
6.openEuler-24.03-LTS-Next(6.6.0):否
7.openEuler-22.03-LTS-SP4(5.10.0):否

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2024-2296

Hi openeuler-ci-bot, welcome to the openEuler Community.
I'm the Bot here serving you. You can find the instructions on how to interact with me at Here.
If you have any questions, please contact the SIG: Kernel, and any of the maintainers.

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**issue处理注意事项:** 
**1. 当前issue受影响的分支提交pr时, 须在pr描述中填写当前issue编号进行关联, 否则无法关闭当前issue;**
**2. 模板内容需要填写完整, 无论是受影响或者不受影响都需要填写完整内容,未引入的分支不需要填写, 否则无法关闭当前issue;**
**3. 以下为模板中需要填写完整的内容, 请复制到评论区回复, 注: 内容的标题名称(影响性分析说明, openEuler评分, 受影响版本排查(受影响/不受影响), 修复是否涉及abi变化(是/否))不能省略,省略后cve-manager将无法正常解析填写内容.**
************************************************************************
影响性分析说明:

openEuler评分: (评分和向量)

受影响版本排查(受影响/不受影响): 
1.master(6.1.0):
2.openEuler-20.03-LTS-SP4(4.19.90):
3.openEuler-22.03-LTS-SP1(5.10.0):
4.openEuler-22.03-LTS-SP3(5.10.0):
5.openEuler-22.03-LTS-SP4(5.10.0):
6.openEuler-24.03-LTS(6.6.0):
7.openEuler-24.03-LTS-Next(6.6.0):

修复是否涉及abi变化(是/否)：
1.master(6.1.0):
2.openEuler-20.03-LTS-SP4(4.19.90):
3.openEuler-22.03-LTS-SP1(5.10.0):
4.openEuler-22.03-LTS-SP3(5.10.0):
5.openEuler-22.03-LTS-SP4(5.10.0):
6.openEuler-24.03-LTS(6.6.0):
7.openEuler-24.03-LTS-Next(6.6.0):

-----------------------------------------------------------------------
issue处理具体操作请参考: 
https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
pr关联issue具体操作请参考:
https://gitee.com/help/articles/4142

参考网址	关联pr	状态	补丁链接
https://nvd.nist.gov/vuln/detail/CVE-2024-43834	None	None	https://git.kernel.org/stable/c/bf0ce5aa5f2525ed1b921ba36de96e458e77f482 https://git.kernel.org/stable/c/12144069209eec7f2090ce9afa15acdcc2c2a537 https://git.kernel.org/stable/c/59a931c5b732ca5fc2ca727f5a72aeabaafa85ec https://git.kernel.org/stable/c/3fc1be360b99baeea15cdee3cf94252cd3a72d26
https://ubuntu.com/security/CVE-2024-43834	None	None	https://discourse.ubuntu.com/c/ubuntu-pro
https://www.opencve.io/cve/CVE-2024-43834	None	None	https://git.kernel.org/stable/c/bf0ce5aa5f2525ed1b921ba36de96e458e77f482 https://git.kernel.org/stable/c/12144069209eec7f2090ce9afa15acdcc2c2a537 https://git.kernel.org/stable/c/59a931c5b732ca5fc2ca727f5a72aeabaafa85ec https://git.kernel.org/stable/c/3fc1be360b99baeea15cdee3cf94252cd3a72d26
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2024-43834
https://security-tracker.debian.org/tracker/CVE-2024-43834	None	None	https://git.kernel.org/linus/59a931c5b732ca5fc2ca727f5a72aeabaafa85ec

说明：补丁链接仅供初步排查参考，实际可用性请人工再次确认，补丁下载验证可使用CVE补丁工具。
若补丁不准确，烦请在此issue下评论 '/report-patch 参考网址补丁链接1,补丁链接2' 反馈正确信息，便于我们不断优化工具，不胜感激。
如 /report-patch https://security-tracker.debian.org/tracker/CVE-2021-3997 https://github.com/systemd/systemd/commit/5b1cf7a9be37e20133c0208005274ce4a5b5c6a1

CVE-2024-43834

影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:

xdp: fix invalid wait context of page_pool_destroy()

If the driver uses a page pool, it creates a page pool with
page_pool_create().
The reference count of page pool is 1 as default.
A page pool will be destroyed only when a reference count reaches 0.
page_pool_destroy() is used to destroy page pool, it decreases a
reference count.
When a page pool is destroyed, -&gt;disconnect() is called, which is
mem_allocator_disconnect().
This function internally acquires mutex_lock().

If the driver uses XDP, it registers a memory model with
xdp_rxq_info_reg_mem_model().
The xdp_rxq_info_reg_mem_model() internally increases a page pool
reference count if a memory model is a page pool.
Now the reference count is 2.

To destroy a page pool, the driver should call both page_pool_destroy()
and xdp_unreg_mem_model().
The xdp_unreg_mem_model() internally calls page_pool_destroy().
Only page_pool_destroy() decreases a reference count.

If a driver calls page_pool_destroy() then xdp_unreg_mem_model(), we
will face an invalid wait context warning.
Because xdp_unreg_mem_model() calls page_pool_destroy() with
rcu_read_lock().
The page_pool_destroy() internally acquires mutex_lock().

Splat looks like:
=============================
[ BUG: Invalid wait context ]
6.10.0-rc6+ #4 Tainted: G W
-----------------------------
ethtool/1806 is trying to lock:
ffffffff90387b90 (mem_id_lock){+.+.}-{4:4}, at: mem_allocator_disconnect+0x73/0x150
other info that might help us debug this:
context-{5:5}
3 locks held by ethtool/1806:
stack backtrace:
CPU: 0 PID: 1806 Comm: ethtool Tainted: G W 6.10.0-rc6+ #4 f916f41f172891c800f2fed
Hardware name: ASUS System Product Name/PRIME Z690-P D4, BIOS 0603 11/01/2021
Call Trace:
&lt;TASK&gt;
dump_stack_lvl+0x7e/0xc0
__lock_acquire+0x1681/0x4de0
? _printk+0x64/0xe0
? __pfx_mark_lock.part.0+0x10/0x10
? __pfx___lock_acquire+0x10/0x10
lock_acquire+0x1b3/0x580
? mem_allocator_disconnect+0x73/0x150
? __wake_up_klogd.part.0+0x16/0xc0
? __pfx_lock_acquire+0x10/0x10
? dump_stack_lvl+0x91/0xc0
__mutex_lock+0x15c/0x1690
? mem_allocator_disconnect+0x73/0x150
? __pfx_prb_read_valid+0x10/0x10
? mem_allocator_disconnect+0x73/0x150
? __pfx_llist_add_batch+0x10/0x10
? console_unlock+0x193/0x1b0
? lockdep_hardirqs_on+0xbe/0x140
? __pfx___mutex_lock+0x10/0x10
? tick_nohz_tick_stopped+0x16/0x90
? __irq_work_queue_local+0x1e5/0x330
? irq_work_queue+0x39/0x50
? __wake_up_klogd.part.0+0x79/0xc0
? mem_allocator_disconnect+0x73/0x150
mem_allocator_disconnect+0x73/0x150
? __pfx_mem_allocator_disconnect+0x10/0x10
? mark_held_locks+0xa5/0xf0
? rcu_is_watching+0x11/0xb0
page_pool_release+0x36e/0x6d0
page_pool_destroy+0xd7/0x440
xdp_unreg_mem_model+0x1a7/0x2a0
? __pfx_xdp_unreg_mem_model+0x10/0x10
? kfree+0x125/0x370
? bnxt_free_ring.isra.0+0x2eb/0x500
? bnxt_free_mem+0x5ac/0x2500
xdp_rxq_info_unreg+0x4a/0xd0
bnxt_free_mem+0x1356/0x2500
bnxt_close_nic+0xf0/0x3b0
? __pfx_bnxt_close_nic+0x10/0x10
? ethnl_parse_bit+0x2c6/0x6d0
? __pfx___nla_validate_parse+0x10/0x10
? __pfx_ethnl_parse_bit+0x10/0x10
bnxt_set_features+0x2a8/0x3e0
__netdev_update_features+0x4dc/0x1370
? ethnl_parse_bitset+0x4ff/0x750
? __pfx_ethnl_parse_bitset+0x10/0x10
? __pfx___netdev_update_features+0x10/0x10
? mark_held_locks+0xa5/0xf0
? _raw_spin_unlock_irqrestore+0x42/0x70
? __pm_runtime_resume+0x7d/0x110
ethnl_set_features+0x32d/0xa20

To fix this problem, it uses rhashtable_lookup_fast() instead of
rhashtable_lookup() with rcu_read_lock().
Using xa without rcu_read_lock() here is safe.
xa is freed by __xdp_mem_allocator_rcu_free() and this is called by
call_rcu() of mem_xa_remove().
The mem_xa_remove() is called by page_pool_destroy() if a reference
count reaches 0.
The xa is already protected by the reference count mechanism well in the
control plane.
So removing rcu_read_lock() for page_pool_destroy() is safe.

The Linux kernel CVE team has assigned CVE-2024-43834 to this issue.

openEuler评分:(评分和向量)
3.9
AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L

受影响版本排查(受影响/不受影响):
1.openEuler-20.03-LTS-SP4:不受影响
2.openEuler-22.03-LTS-SP1:不受影响
3.openEuler-22.03-LTS-SP3:不受影响
4.openEuler-22.03-LTS-SP4:不受影响
5.master(6.1.0):不受影响
6.openEuler-24.03-LTS:不受影响
7.openEuler-24.03-LTS-Next:不受影响

修复是否涉及abi变化(是/否)：
1.openEuler-20.03-LTS-SP4:否
2.openEuler-22.03-LTS-SP1:否
3.openEuler-22.03-LTS-SP3:否
4.master(6.1.0):否
5.openEuler-24.03-LTS:否
6.openEuler-24.03-LTS-Next:否
7.openEuler-22.03-LTS-SP4:否

@ 经过 cve-manager 解析, 已分析的内容如下表所示:
| 状态  | 需分析 | 内容 |
|:--:|:--:|---------|
|已分析|1.影响性分析说明|In the Linux kernel, the following vulnerability has been resolved:xdp: fix invalid wait context of page_pool_destroy()If the driver uses a page pool, it creates a page pool withpage_pool_create().The reference count of page pool is 1 as default.A page pool will be destroyed only when a reference count reaches 0.page_pool_destroy() is used to destroy page pool, it decreases areference count.When a page pool is destroyed, -&gt;disconnect() is called, which ismem_allocator_disconnect().This function internally acquires mutex_lock().If the driver uses XDP, it registers a memory model withxdp_rxq_info_reg_mem_model().The xdp_rxq_info_reg_mem_model() internally increases a page poolreference count if a memory model is a page pool.Now the reference count is 2.To destroy a page pool, the driver should call both page_pool_destroy()and xdp_unreg_mem_model().The xdp_unreg_mem_model() internally calls page_pool_destroy().Only page_pool_destroy() decreases a reference count.If a driver calls page_pool_destroy() then xdp_unreg_mem_model(), wewill face an invalid wait context warning.Because xdp_unreg_mem_model() calls page_pool_destroy() withrcu_read_lock().The page_pool_destroy() internally acquires mutex_lock().Splat looks like:=============================[ BUG: Invalid wait context ]6.10.0-rc6+ #4 Tainted: G W-----------------------------ethtool/1806 is trying to lock:ffffffff90387b90 (mem_id_lock){+.+.}-{4:4}, at: mem_allocator_disconnect+0x73/0x150other info that might help us debug this:context-{5:5}3 locks held by ethtool/1806:stack backtrace:CPU: 0 PID: 1806 Comm: ethtool Tainted: G W 6.10.0-rc6+ #4 f916f41f172891c800f2fedHardware name: ASUS System Product Name/PRIME Z690-P D4, BIOS 0603 11/01/2021Call Trace:&lt;TASK&gt;dump_stack_lvl+0x7e/0xc0__lock_acquire+0x1681/0x4de0? _printk+0x64/0xe0? __pfx_mark_lock.part.0+0x10/0x10? __pfx___lock_acquire+0x10/0x10lock_acquire+0x1b3/0x580? mem_allocator_disconnect+0x73/0x150? __wake_up_klogd.part.0+0x16/0xc0? __pfx_lock_acquire+0x10/0x10? dump_stack_lvl+0x91/0xc0__mutex_lock+0x15c/0x1690? mem_allocator_disconnect+0x73/0x150? __pfx_prb_read_valid+0x10/0x10? mem_allocator_disconnect+0x73/0x150? __pfx_llist_add_batch+0x10/0x10? console_unlock+0x193/0x1b0? lockdep_hardirqs_on+0xbe/0x140? __pfx___mutex_lock+0x10/0x10? tick_nohz_tick_stopped+0x16/0x90? __irq_work_queue_local+0x1e5/0x330? irq_work_queue+0x39/0x50? __wake_up_klogd.part.0+0x79/0xc0? mem_allocator_disconnect+0x73/0x150mem_allocator_disconnect+0x73/0x150? __pfx_mem_allocator_disconnect+0x10/0x10? mark_held_locks+0xa5/0xf0? rcu_is_watching+0x11/0xb0page_pool_release+0x36e/0x6d0page_pool_destroy+0xd7/0x440xdp_unreg_mem_model+0x1a7/0x2a0? __pfx_xdp_unreg_mem_model+0x10/0x10? kfree+0x125/0x370? bnxt_free_ring.isra.0+0x2eb/0x500? bnxt_free_mem+0x5ac/0x2500xdp_rxq_info_unreg+0x4a/0xd0bnxt_free_mem+0x1356/0x2500bnxt_close_nic+0xf0/0x3b0? __pfx_bnxt_close_nic+0x10/0x10? ethnl_parse_bit+0x2c6/0x6d0? __pfx___nla_validate_parse+0x10/0x10? __pfx_ethnl_parse_bit+0x10/0x10bnxt_set_features+0x2a8/0x3e0__netdev_update_features+0x4dc/0x1370? ethnl_parse_bitset+0x4ff/0x750? __pfx_ethnl_parse_bitset+0x10/0x10? __pfx___netdev_update_features+0x10/0x10? mark_held_locks+0xa5/0xf0? _raw_spin_unlock_irqrestore+0x42/0x70? __pm_runtime_resume+0x7d/0x110ethnl_set_features+0x32d/0xa20To fix this problem, it uses rhashtable_lookup_fast() instead ofrhashtable_lookup() with rcu_read_lock().Using xa without rcu_read_lock() here is safe.xa is freed by __xdp_mem_allocator_rcu_free() and this is called bycall_rcu() of mem_xa_remove().The mem_xa_remove() is called by page_pool_destroy() if a referencecount reaches 0.The xa is already protected by the reference count mechanism well in thecontrol plane.So removing rcu_read_lock() for page_pool_destroy() is safe.The Linux kernel CVE team has assigned CVE-2024-43834 to this issue.|
|已分析|2.openEulerScore|3.9|
|已分析|3.openEulerVector|AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L|
|已分析|4.受影响版本排查|openEuler-20.03-LTS-SP4:不受影响,openEuler-22.03-LTS-SP1:不受影响,openEuler-22.03-LTS-SP3:不受影响,openEuler-22.03-LTS-SP4:不受影响,master:不受影响,openEuler-24.03-LTS:不受影响,openEuler-24.03-LTS-Next:不受影响|
|已分析|5.修复是否涉及abi变化|openEuler-20.03-LTS-SP4:否,openEuler-22.03-LTS-SP1:否,openEuler-22.03-LTS-SP3:否,master:否,openEuler-24.03-LTS:否,openEuler-24.03-LTS-Next:否,openEuler-22.03-LTS-SP4:否|

**请确认分析内容的准确性, 确认无误后, 您可以进行后续步骤, 否则您可以继续分析.**

CVE-2024-43834

影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:

xdp: fix invalid wait context of page_pool_destroy()

If the driver uses a page pool, it creates a page pool with
page_pool_create().
The reference count of page pool is 1 as default.
A page pool will be destroyed only when a reference count reaches 0.
page_pool_destroy() is used to destroy page pool, it decreases a
reference count.
When a page pool is destroyed, -&gt;disconnect() is called, which is
mem_allocator_disconnect().
This function internally acquires mutex_lock().

If the driver uses XDP, it registers a memory model with
xdp_rxq_info_reg_mem_model().
The xdp_rxq_info_reg_mem_model() internally increases a page pool
reference count if a memory model is a page pool.
Now the reference count is 2.

To destroy a page pool, the driver should call both page_pool_destroy()
and xdp_unreg_mem_model().
The xdp_unreg_mem_model() internally calls page_pool_destroy().
Only page_pool_destroy() decreases a reference count.

If a driver calls page_pool_destroy() then xdp_unreg_mem_model(), we
will face an invalid wait context warning.
Because xdp_unreg_mem_model() calls page_pool_destroy() with
rcu_read_lock().
The page_pool_destroy() internally acquires mutex_lock().

Splat looks like:
=============================
[ BUG: Invalid wait context ]
6.10.0-rc6+ #4 Tainted: G W
-----------------------------
ethtool/1806 is trying to lock:
ffffffff90387b90 (mem_id_lock){+.+.}-{4:4}, at: mem_allocator_disconnect+0x73/0x150
other info that might help us debug this:
context-{5:5}
3 locks held by ethtool/1806:
stack backtrace:
CPU: 0 PID: 1806 Comm: ethtool Tainted: G W 6.10.0-rc6+ #4 f916f41f172891c800f2fed
Hardware name: ASUS System Product Name/PRIME Z690-P D4, BIOS 0603 11/01/2021
Call Trace:
&lt;TASK&gt;
dump_stack_lvl+0x7e/0xc0
__lock_acquire+0x1681/0x4de0
? _printk+0x64/0xe0
? __pfx_mark_lock.part.0+0x10/0x10
? __pfx___lock_acquire+0x10/0x10
lock_acquire+0x1b3/0x580
? mem_allocator_disconnect+0x73/0x150
? __wake_up_klogd.part.0+0x16/0xc0
? __pfx_lock_acquire+0x10/0x10
? dump_stack_lvl+0x91/0xc0
__mutex_lock+0x15c/0x1690
? mem_allocator_disconnect+0x73/0x150
? __pfx_prb_read_valid+0x10/0x10
? mem_allocator_disconnect+0x73/0x150
? __pfx_llist_add_batch+0x10/0x10
? console_unlock+0x193/0x1b0
? lockdep_hardirqs_on+0xbe/0x140
? __pfx___mutex_lock+0x10/0x10
? tick_nohz_tick_stopped+0x16/0x90
? __irq_work_queue_local+0x1e5/0x330
? irq_work_queue+0x39/0x50
? __wake_up_klogd.part.0+0x79/0xc0
? mem_allocator_disconnect+0x73/0x150
mem_allocator_disconnect+0x73/0x150
? __pfx_mem_allocator_disconnect+0x10/0x10
? mark_held_locks+0xa5/0xf0
? rcu_is_watching+0x11/0xb0
page_pool_release+0x36e/0x6d0
page_pool_destroy+0xd7/0x440
xdp_unreg_mem_model+0x1a7/0x2a0
? __pfx_xdp_unreg_mem_model+0x10/0x10
? kfree+0x125/0x370
? bnxt_free_ring.isra.0+0x2eb/0x500
? bnxt_free_mem+0x5ac/0x2500
xdp_rxq_info_unreg+0x4a/0xd0
bnxt_free_mem+0x1356/0x2500
bnxt_close_nic+0xf0/0x3b0
? __pfx_bnxt_close_nic+0x10/0x10
? ethnl_parse_bit+0x2c6/0x6d0
? __pfx___nla_validate_parse+0x10/0x10
? __pfx_ethnl_parse_bit+0x10/0x10
bnxt_set_features+0x2a8/0x3e0
__netdev_update_features+0x4dc/0x1370
? ethnl_parse_bitset+0x4ff/0x750
? __pfx_ethnl_parse_bitset+0x10/0x10
? __pfx___netdev_update_features+0x10/0x10
? mark_held_locks+0xa5/0xf0
? _raw_spin_unlock_irqrestore+0x42/0x70
? __pm_runtime_resume+0x7d/0x110
ethnl_set_features+0x32d/0xa20

To fix this problem, it uses rhashtable_lookup_fast() instead of
rhashtable_lookup() with rcu_read_lock().
Using xa without rcu_read_lock() here is safe.
xa is freed by __xdp_mem_allocator_rcu_free() and this is called by
call_rcu() of mem_xa_remove().
The mem_xa_remove() is called by page_pool_destroy() if a reference
count reaches 0.
The xa is already protected by the reference count mechanism well in the
control plane.
So removing rcu_read_lock() for page_pool_destroy() is safe.

The Linux kernel CVE team has assigned CVE-2024-43834 to this issue.

openEuler评分:(评分和向量)
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

受影响版本排查(受影响/不受影响):
1.openEuler-20.03-LTS-SP4:不受影响
2.openEuler-22.03-LTS-SP1:不受影响
3.openEuler-22.03-LTS-SP3:不受影响
4.openEuler-22.03-LTS-SP4:不受影响
5.master(6.1.0):不受影响
6.openEuler-24.03-LTS:不受影响
7.openEuler-24.03-LTS-Next:不受影响

修复是否涉及abi变化(是/否)：
1.openEuler-20.03-LTS-SP4:否
2.openEuler-22.03-LTS-SP1:否
3.openEuler-22.03-LTS-SP3:否
4.master(6.1.0):否
5.openEuler-24.03-LTS:否
6.openEuler-24.03-LTS-Next:否
7.openEuler-22.03-LTS-SP4:否

@sanglipeng 经过 cve-manager 解析, 已分析的内容如下表所示:
| 状态  | 需分析 | 内容 |
|:--:|:--:|---------|
|已分析|1.影响性分析说明|In the Linux kernel, the following vulnerability has been resolved:xdp: fix invalid wait context of page_pool_destroy()If the driver uses a page pool, it creates a page pool withpage_pool_create().The reference count of page pool is 1 as default.A page pool will be destroyed only when a reference count reaches 0.page_pool_destroy() is used to destroy page pool, it decreases areference count.When a page pool is destroyed, -&gt;disconnect() is called, which ismem_allocator_disconnect().This function internally acquires mutex_lock().If the driver uses XDP, it registers a memory model withxdp_rxq_info_reg_mem_model().The xdp_rxq_info_reg_mem_model() internally increases a page poolreference count if a memory model is a page pool.Now the reference count is 2.To destroy a page pool, the driver should call both page_pool_destroy()and xdp_unreg_mem_model().The xdp_unreg_mem_model() internally calls page_pool_destroy().Only page_pool_destroy() decreases a reference count.If a driver calls page_pool_destroy() then xdp_unreg_mem_model(), wewill face an invalid wait context warning.Because xdp_unreg_mem_model() calls page_pool_destroy() withrcu_read_lock().The page_pool_destroy() internally acquires mutex_lock().Splat looks like:=============================[ BUG: Invalid wait context ]6.10.0-rc6+ #4 Tainted: G W-----------------------------ethtool/1806 is trying to lock:ffffffff90387b90 (mem_id_lock){+.+.}-{4:4}, at: mem_allocator_disconnect+0x73/0x150other info that might help us debug this:context-{5:5}3 locks held by ethtool/1806:stack backtrace:CPU: 0 PID: 1806 Comm: ethtool Tainted: G W 6.10.0-rc6+ #4 f916f41f172891c800f2fedHardware name: ASUS System Product Name/PRIME Z690-P D4, BIOS 0603 11/01/2021Call Trace:&lt;TASK&gt;dump_stack_lvl+0x7e/0xc0__lock_acquire+0x1681/0x4de0? _printk+0x64/0xe0? __pfx_mark_lock.part.0+0x10/0x10? __pfx___lock_acquire+0x10/0x10lock_acquire+0x1b3/0x580? mem_allocator_disconnect+0x73/0x150? __wake_up_klogd.part.0+0x16/0xc0? __pfx_lock_acquire+0x10/0x10? dump_stack_lvl+0x91/0xc0__mutex_lock+0x15c/0x1690? mem_allocator_disconnect+0x73/0x150? __pfx_prb_read_valid+0x10/0x10? mem_allocator_disconnect+0x73/0x150? __pfx_llist_add_batch+0x10/0x10? console_unlock+0x193/0x1b0? lockdep_hardirqs_on+0xbe/0x140? __pfx___mutex_lock+0x10/0x10? tick_nohz_tick_stopped+0x16/0x90? __irq_work_queue_local+0x1e5/0x330? irq_work_queue+0x39/0x50? __wake_up_klogd.part.0+0x79/0xc0? mem_allocator_disconnect+0x73/0x150mem_allocator_disconnect+0x73/0x150? __pfx_mem_allocator_disconnect+0x10/0x10? mark_held_locks+0xa5/0xf0? rcu_is_watching+0x11/0xb0page_pool_release+0x36e/0x6d0page_pool_destroy+0xd7/0x440xdp_unreg_mem_model+0x1a7/0x2a0? __pfx_xdp_unreg_mem_model+0x10/0x10? kfree+0x125/0x370? bnxt_free_ring.isra.0+0x2eb/0x500? bnxt_free_mem+0x5ac/0x2500xdp_rxq_info_unreg+0x4a/0xd0bnxt_free_mem+0x1356/0x2500bnxt_close_nic+0xf0/0x3b0? __pfx_bnxt_close_nic+0x10/0x10? ethnl_parse_bit+0x2c6/0x6d0? __pfx___nla_validate_parse+0x10/0x10? __pfx_ethnl_parse_bit+0x10/0x10bnxt_set_features+0x2a8/0x3e0__netdev_update_features+0x4dc/0x1370? ethnl_parse_bitset+0x4ff/0x750? __pfx_ethnl_parse_bitset+0x10/0x10? __pfx___netdev_update_features+0x10/0x10? mark_held_locks+0xa5/0xf0? _raw_spin_unlock_irqrestore+0x42/0x70? __pm_runtime_resume+0x7d/0x110ethnl_set_features+0x32d/0xa20To fix this problem, it uses rhashtable_lookup_fast() instead ofrhashtable_lookup() with rcu_read_lock().Using xa without rcu_read_lock() here is safe.xa is freed by __xdp_mem_allocator_rcu_free() and this is called bycall_rcu() of mem_xa_remove().The mem_xa_remove() is called by page_pool_destroy() if a referencecount reaches 0.The xa is already protected by the reference count mechanism well in thecontrol plane.So removing rcu_read_lock() for page_pool_destroy() is safe.The Linux kernel CVE team has assigned CVE-2024-43834 to this issue.|
|已分析|2.openEulerScore|5.5|
|已分析|3.openEulerVector|AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H|
|已分析|4.受影响版本排查|openEuler-20.03-LTS-SP4:不受影响,openEuler-22.03-LTS-SP1:不受影响,openEuler-22.03-LTS-SP3:不受影响,openEuler-22.03-LTS-SP4:不受影响,master:不受影响,openEuler-24.03-LTS:不受影响,openEuler-24.03-LTS-Next:不受影响|
|已分析|5.修复是否涉及abi变化|openEuler-20.03-LTS-SP4:否,openEuler-22.03-LTS-SP1:否,openEuler-22.03-LTS-SP3:否,master:否,openEuler-24.03-LTS:否,openEuler-24.03-LTS-Next:否,openEuler-22.03-LTS-SP4:否|