CVE-2022-48818

一、漏洞信息
 漏洞编号：[CVE-2022-48818](https://nvd.nist.gov/vuln/detail/CVE-2022-48818)
 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 V2.0分值：
  BaseScore：0.0 Low
  Vector：CVSS：2.0/
 漏洞简述：
  In the Linux kernel, the following vulnerability has been resolved:net: dsa: mv88e6xxx: don t use devres for mdiobusAs explained in commits:74b6d7d13307 ( net: dsa: realtek: register the MDIO bus under devres )5135e96a3dd2 ( net: dsa: don t allocate the slave_mii_bus using devres )mdiobus_free() will panic when called from devm_mdiobus_free() <-devres_release_all() <- __device_release_driver(), and that mdiobus wasnot previously unregistered.The mv88e6xxx is an MDIO device, so the initial set of constraints thatI thought would cause this (I2C or SPI buses which call ->remove on->shutdown) do not apply. But there is one more which applies here.If the DSA master itself is on a bus that calls ->remove from ->shutdown(like dpaa2-eth, which is on the fsl-mc bus), there is a device linkbetween the switch and the DSA master, and device_links_unbind_consumers()will unbind the Marvell switch driver on shutdown.systemd-shutdown[1]: Powering off.mv88e6085 0x0000000008b96000:00 sw_gl0: Link is Downfsl-mc dpbp.9: Removing from iommu group 7fsl-mc dpbp.8: Removing from iommu group 7------------[ cut here ]------------kernel BUG at drivers/net/phy/mdio_bus.c:677!Internal error: Oops - BUG: 0 [#1] PREEMPT SMPModules linked in:CPU: 0 PID: 1 Comm: systemd-shutdow Not tainted 5.16.5-00040-gdc05f73788e5 #15pc : mdiobus_free+0x44/0x50lr : devm_mdiobus_free+0x10/0x20Call trace: mdiobus_free+0x44/0x50 devm_mdiobus_free+0x10/0x20 devres_release_all+0xa0/0x100 __device_release_driver+0x190/0x220 device_release_driver_internal+0xac/0xb0 device_links_unbind_consumers+0xd4/0x100 __device_release_driver+0x4c/0x220 device_release_driver_internal+0xac/0xb0 device_links_unbind_consumers+0xd4/0x100 __device_release_driver+0x94/0x220 device_release_driver+0x28/0x40 bus_remove_device+0x118/0x124 device_del+0x174/0x420 fsl_mc_device_remove+0x24/0x40 __fsl_mc_device_remove+0xc/0x20 device_for_each_child+0x58/0xa0 dprc_remove+0x90/0xb0 fsl_mc_driver_remove+0x20/0x5c __device_release_driver+0x21c/0x220 device_release_driver+0x28/0x40 bus_remove_device+0x118/0x124 device_del+0x174/0x420 fsl_mc_bus_remove+0x80/0x100 fsl_mc_bus_shutdown+0xc/0x1c platform_shutdown+0x20/0x30 device_shutdown+0x154/0x330 kernel_power_off+0x34/0x6c __do_sys_reboot+0x15c/0x250 __arm64_sys_reboot+0x20/0x30 invoke_syscall.constprop.0+0x4c/0xe0 do_el0_svc+0x4c/0x150 el0_svc+0x24/0xb0 el0t_64_sync_handler+0xa8/0xb0 el0t_64_sync+0x178/0x17cSo the same treatment must be applied to all DSA switch drivers, whichis: either use devres for both the mdiobus allocation and registration,or don t use devres at all.The Marvell driver already has a good structure for mdiobus removal, sojust plug in mdiobus_free and get rid of devres.
 漏洞公开时间：2024-07-16 20:15:05
 漏洞创建时间：2024-07-16 22:58:03
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2022-48818
<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/1b451c3994a2d322f8e55032c62c8b47b7d95900 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/8b626d45127d6f5ada7d815b83cfdc09e8cb1394 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/8ccebe77df6e0d88c72ba5e69cf1835927e53b6c |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/f53a2ce893b2c7884ef94471f170839170a4eba0 |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-48818 | https://bugzilla.suse.com/show_bug.cgi?id=1228039 |
| suse_bugzilla | https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2022/CVE-2022-48818.mbox | https://bugzilla.suse.com/show_bug.cgi?id=1228039 |
| suse_bugzilla | https://git.kernel.org/stable/c/8ccebe77df6e0d88c72ba5e69cf1835927e53b6c | https://bugzilla.suse.com/show_bug.cgi?id=1228039 |
| suse_bugzilla | https://git.kernel.org/stable/c/8b626d45127d6f5ada7d815b83cfdc09e8cb1394 | https://bugzilla.suse.com/show_bug.cgi?id=1228039 |
| suse_bugzilla | https://git.kernel.org/stable/c/1b451c3994a2d322f8e55032c62c8b47b7d95900 | https://bugzilla.suse.com/show_bug.cgi?id=1228039 |
| suse_bugzilla | https://git.kernel.org/stable/c/f53a2ce893b2c7884ef94471f170839170a4eba0 | https://bugzilla.suse.com/show_bug.cgi?id=1228039 |
| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2022-48818 | https://bugzilla.suse.com/show_bug.cgi?id=1228039 |
| suse_bugzilla | https://bugzilla.redhat.com/show_bug.cgi?id=2298157 | https://bugzilla.suse.com/show_bug.cgi?id=1228039 |
| ubuntu | https://www.cve.org/CVERecord?id=CVE-2022-48818 | https://ubuntu.com/security/CVE-2022-48818 |
| ubuntu | https://git.kernel.org/linus/f53a2ce893b2c7884ef94471f170839170a4eba0 (5.17-rc4) | https://ubuntu.com/security/CVE-2022-48818 |
| ubuntu | https://git.kernel.org/stable/c/8ccebe77df6e0d88c72ba5e69cf1835927e53b6c | https://ubuntu.com/security/CVE-2022-48818 |
| ubuntu | https://git.kernel.org/stable/c/8b626d45127d6f5ada7d815b83cfdc09e8cb1394 | https://ubuntu.com/security/CVE-2022-48818 |
| ubuntu | https://git.kernel.org/stable/c/1b451c3994a2d322f8e55032c62c8b47b7d95900 | https://ubuntu.com/security/CVE-2022-48818 |
| ubuntu | https://git.kernel.org/stable/c/f53a2ce893b2c7884ef94471f170839170a4eba0 | https://ubuntu.com/security/CVE-2022-48818 |
| ubuntu | https://nvd.nist.gov/vuln/detail/CVE-2022-48818 | https://ubuntu.com/security/CVE-2022-48818 |
| ubuntu | https://launchpad.net/bugs/cve/CVE-2022-48818 | https://ubuntu.com/security/CVE-2022-48818 |
| ubuntu | https://security-tracker.debian.org/tracker/CVE-2022-48818 | https://ubuntu.com/security/CVE-2022-48818 |

</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:
  其它
 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/f53a2ce893b2c7884ef94471f170839170a4eba0 | 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:net: dsa: mv88e6xxx: don&#39;t use devres for mdiobusAs explained in commits:74b6d7d13307 (&#34;net: dsa: realtek: register the MDIO bus under devres&#34;)5135e96a3dd2 (&#34;net: dsa: don&#39;t allocate the slave_mii_bus using devres&#34;)mdiobus_free() will panic when called from devm_mdiobus_free() &lt;-devres_release_all() &lt;- __device_release_driver(), and that mdiobus wasnot previously unregistered.The mv88e6xxx is an MDIO device, so the initial set of constraints thatI thought would cause this (I2C or SPI buses which call -&gt;remove on-&gt;shutdown) do not apply. But there is one more which applies here.If the DSA master itself is on a bus that calls -&gt;remove from -&gt;shutdown(like dpaa2-eth, which is on the fsl-mc bus), there is a device linkbetween the switch and the DSA master, and device_links_unbind_consumers()will unbind the Marvell switch driver on shutdown.systemd-shutdown[1]: Powering off.mv88e6085 0x0000000008b96000:00 sw_gl0: Link is Downfsl-mc dpbp.9: Removing from iommu group 7fsl-mc dpbp.8: Removing from iommu group 7------------[ cut here ]------------kernel BUG at drivers/net/phy/mdio_bus.c:677!Internal error: Oops - BUG: 0 [#1] PREEMPT SMPModules linked in:CPU: 0 PID: 1 Comm: systemd-shutdow Not tainted 5.16.5-00040-gdc05f73788e5 #15pc : mdiobus_free+0x44/0x50lr : devm_mdiobus_free+0x10/0x20Call trace: mdiobus_free+0x44/0x50 devm_mdiobus_free+0x10/0x20 devres_release_all+0xa0/0x100 __device_release_driver+0x190/0x220 device_release_driver_internal+0xac/0xb0 device_links_unbind_consumers+0xd4/0x100 __device_release_driver+0x4c/0x220 device_release_driver_internal+0xac/0xb0 device_links_unbind_consumers+0xd4/0x100 __device_release_driver+0x94/0x220 device_release_driver+0x28/0x40 bus_remove_device+0x118/0x124 device_del+0x174/0x420 fsl_mc_device_remove+0x24/0x40 __fsl_mc_device_remove+0xc/0x20 device_for_each_child+0x58/0xa0 dprc_remove+0x90/0xb0 fsl_mc_driver_remove+0x20/0x5c __device_release_driver+0x21c/0x220 device_release_driver+0x28/0x40 bus_remove_device+0x118/0x124 device_del+0x174/0x420 fsl_mc_bus_remove+0x80/0x100 fsl_mc_bus_shutdown+0xc/0x1c platform_shutdown+0x20/0x30 device_shutdown+0x154/0x330 kernel_power_off+0x34/0x6c __do_sys_reboot+0x15c/0x250 __arm64_sys_reboot+0x20/0x30 invoke_syscall.constprop.0+0x4c/0xe0 do_el0_svc+0x4c/0x150 el0_svc+0x24/0xb0 el0t_64_sync_handler+0xa8/0xb0 el0t_64_sync+0x178/0x17cSo the same treatment must be applied to all DSA switch drivers, whichis: either use devres for both the mdiobus allocation and registration,or don&#39;t use devres at all.The Marvell driver already has a good structure for mdiobus removal, sojust plug in mdiobus_free and get rid of devres.The Linux kernel CVE team has assigned CVE-2022-48818 to this issue.
 openEuler评分：
  3.9
 Vector：CVSS：3.0/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(4.19.90):不受影响
2.openEuler-22.03-LTS-SP1(5.10.0):不受影响
3.openEuler-22.03-LTS-SP3(5.10.0):不受影响
4.openEuler-22.03-LTS-SP4(5.10.0):不受影响
5.master(6.1.0):不受影响
6.openEuler-24.03-LTS(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(6.1.0):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

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