CVE-2023-52574

一、漏洞信息
 漏洞编号：[CVE-2023-52574](https://nvd.nist.gov/vuln/detail/CVE-2023-52574)
 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
 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:team: fix null-ptr-deref when team device type is changedGet a null-ptr-deref bug as follows with reproducer [1].BUG: kernel NULL pointer dereference, address: 0000000000000228...RIP: 0010:vlan_dev_hard_header+0x35/0x140 [8021q]...Call Trace: <TASK> ? __die+0x24/0x70 ? page_fault_oops+0x82/0x150 ? exc_page_fault+0x69/0x150 ? asm_exc_page_fault+0x26/0x30 ? vlan_dev_hard_header+0x35/0x140 [8021q] ? vlan_dev_hard_header+0x8e/0x140 [8021q] neigh_connected_output+0xb2/0x100 ip6_finish_output2+0x1cb/0x520 ? nf_hook_slow+0x43/0xc0 ? ip6_mtu+0x46/0x80 ip6_finish_output+0x2a/0xb0 mld_sendpack+0x18f/0x250 mld_ifc_work+0x39/0x160 process_one_work+0x1e6/0x3f0 worker_thread+0x4d/0x2f0 ? __pfx_worker_thread+0x10/0x10 kthread+0xe5/0x120 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x34/0x50 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1b/0x30[1]$ teamd -t team0 -d -c { runner : { name : loadbalance }} $ ip link add name t-dummy type dummy$ ip link add link t-dummy name t-dummy.100 type vlan id 100$ ip link add name t-nlmon type nlmon$ ip link set t-nlmon master team0$ ip link set t-nlmon nomaster$ ip link set t-dummy up$ ip link set team0 up$ ip link set t-dummy.100 down$ ip link set t-dummy.100 master team0When enslave a vlan device to team device and team device type is changedfrom non-ether to ether, header_ops of team device is changed tovlan_header_ops. That is incorrect and will trigger null-ptr-dereffor vlan->real_dev in vlan_dev_hard_header() because team device is nota vlan device.Cache eth_header_ops in team_setup(), then assign cached header_ops toheader_ops of team net device when its type is changed from non-etherto ether to fix the bug.
 漏洞公开时间：2024-03-03 06:15:49
 漏洞创建时间：2024-03-03 07:21:03
 漏洞详情参考链接：
 https://nvd.nist.gov/vuln/detail/CVE-2023-52574
<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/1779eb51b9cc628cee551f252701a85a2a50a457 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/2f0acb0736ecc3eb85dc80ad2790d634dcb10b58 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/492032760127251e5540a5716a70996bacf2a3fd |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/a7fb47b9711101d2405b0eb1276fb1f9b9b270c7 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/b44dd92e2afd89eb6e9d27616858e72a67bdc1a7 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/c5f6478686bb45f453031594ae19b6c9723a780d |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/cac50d9f5d876be32cb9aa21c74018468900284d |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/cd05eec2ee0cc396813a32ef675634e403748255 |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-52574 | https://bugzilla.suse.com/show_bug.cgi?id=1220870 |
| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2023-52574 | https://bugzilla.suse.com/show_bug.cgi?id=1220870 |
| suse_bugzilla | https://git.kernel.org/stable/c/1779eb51b9cc628cee551f252701a85a2a50a457 | https://bugzilla.suse.com/show_bug.cgi?id=1220870 |
| suse_bugzilla | https://git.kernel.org/stable/c/2f0acb0736ecc3eb85dc80ad2790d634dcb10b58 | https://bugzilla.suse.com/show_bug.cgi?id=1220870 |
| suse_bugzilla | https://git.kernel.org/stable/c/492032760127251e5540a5716a70996bacf2a3fd | https://bugzilla.suse.com/show_bug.cgi?id=1220870 |
| suse_bugzilla | https://git.kernel.org/stable/c/a7fb47b9711101d2405b0eb1276fb1f9b9b270c7 | https://bugzilla.suse.com/show_bug.cgi?id=1220870 |
| suse_bugzilla | https://git.kernel.org/stable/c/b44dd92e2afd89eb6e9d27616858e72a67bdc1a7 | https://bugzilla.suse.com/show_bug.cgi?id=1220870 |
| suse_bugzilla | https://git.kernel.org/stable/c/c5f6478686bb45f453031594ae19b6c9723a780d | https://bugzilla.suse.com/show_bug.cgi?id=1220870 |
| suse_bugzilla | https://git.kernel.org/stable/c/cac50d9f5d876be32cb9aa21c74018468900284d | https://bugzilla.suse.com/show_bug.cgi?id=1220870 |
| suse_bugzilla | https://git.kernel.org/stable/c/cd05eec2ee0cc396813a32ef675634e403748255 | https://bugzilla.suse.com/show_bug.cgi?id=1220870 |
| ubuntu | https://git.kernel.org/linus/492032760127251e5540a5716a70996bacf2a3fd (6.6-rc3) | https://ubuntu.com/security/CVE-2023-52574 |
| ubuntu | https://www.cve.org/CVERecord?id=CVE-2023-52574 | https://ubuntu.com/security/CVE-2023-52574 |
| ubuntu | https://nvd.nist.gov/vuln/detail/CVE-2023-52574 | https://ubuntu.com/security/CVE-2023-52574 |
| ubuntu | https://launchpad.net/bugs/cve/CVE-2023-52574 | https://ubuntu.com/security/CVE-2023-52574 |
| ubuntu | https://security-tracker.debian.org/tracker/CVE-2023-52574 | https://ubuntu.com/security/CVE-2023-52574 |
| debian |  | https://security-tracker.debian.org/tracker/CVE-2023-52574 |
| ubuntu | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-52574 | https://ubuntu.com/security/CVE-2023-52574 |

</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/492032760127251e5540a5716a70996bacf2a3fd | https://git.kernel.org/linus/1d76efe1577b4323609b1bcbfafa8b731eda071a | 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:team: fix null-ptr-deref when team device type is changedGet a null-ptr-deref bug as follows with reproducer [1].BUG: kernel NULL pointer dereference, address: 0000000000000228...RIP: 0010:vlan_dev_hard_header+0x35/0x140 [8021q]...Call Trace: <TASK> ? __die+0x24/0x70 ? page_fault_oops+0x82/0x150 ? exc_page_fault+0x69/0x150 ? asm_exc_page_fault+0x26/0x30 ? vlan_dev_hard_header+0x35/0x140 [8021q] ? vlan_dev_hard_header+0x8e/0x140 [8021q] neigh_connected_output+0xb2/0x100 ip6_finish_output2+0x1cb/0x520 ? nf_hook_slow+0x43/0xc0 ? ip6_mtu+0x46/0x80 ip6_finish_output+0x2a/0xb0 mld_sendpack+0x18f/0x250 mld_ifc_work+0x39/0x160 process_one_work+0x1e6/0x3f0 worker_thread+0x4d/0x2f0 ? __pfx_worker_thread+0x10/0x10 kthread+0xe5/0x120 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x34/0x50 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1b/0x30[1]$ teamd -t team0 -d -c { runner : { name : loadbalance }} $ ip link add name t-dummy type dummy$ ip link add link t-dummy name t-dummy.100 type vlan id 100$ ip link add name t-nlmon type nlmon$ ip link set t-nlmon master team0$ ip link set t-nlmon nomaster$ ip link set t-dummy up$ ip link set team0 up$ ip link set t-dummy.100 down$ ip link set t-dummy.100 master team0When enslave a vlan device to team device and team device type is changedfrom non-ether to ether, header_ops of team device is changed tovlan_header_ops. That is incorrect and will trigger null-ptr-dereffor vlan->real_dev in vlan_dev_hard_header() because team device is nota vlan device.Cache eth_header_ops in team_setup(), then assign cached header_ops toheader_ops of team net device when its type is changed from non-etherto ether to fix the bug. 
 openEuler评分：
 5.5
 Vector：CVSS：2.0/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-20.03-LTS-SP1(4.19.90):受影响
2.openEuler-22.03-LTS(5.10.0):受影响
3.openEuler-22.03-LTS-SP1(5.10.0):受影响
4.openEuler-22.03-LTS-SP2(5.10.0):受影响
5.openEuler-22.03-LTS-SP3(5.10.0):受影响
6.openEuler-20.03-LTS-SP4(4.19.90):不受影响
7.master(6.1.0):不受影响
8.openEuler-22.03-LTS-Next(5.10.0):不受影响
9.openEuler-24.03-LTS:不受影响
10.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-SP1(4.19.90):否
2.openEuler-20.03-LTS-SP4(4.19.90):否
3.openEuler-22.03-LTS(5.10.0):否
4.openEuler-22.03-LTS-SP1(5.10.0):否
5.openEuler-22.03-LTS-SP2(5.10.0):否
6.openEuler-22.03-LTS-SP3(5.10.0):否
7.master(6.1.0):否
8.openEuler-22.03-LTS-Next(5.10.0):否
9.openEuler-24.03-LTS:否
10.openEuler-24.03-LTS-Next:否

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2024-1501

@yangyingliang ,@gatieme ,@jiaoff ,@guohaocs2c ,@hanjun-guo ,@woqidaideshi ,@newbeats ,@zhangyi089 ,@colyli ,@thundertown ,@htforge ,@chiqijun ,@lengchao ,@zhujianwei001 ,@kylin-mayukun ,@wangxiongfeng ,@wkfxxx ,@SuperSix173 ,@jentlestea ,@oskernel0719 
**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-SP1(4.19.90):
3.openEuler-20.03-LTS-SP4(4.19.90):
4.openEuler-22.03-LTS(5.10.0):
5.openEuler-22.03-LTS-Next(5.10.0):
6.openEuler-22.03-LTS-SP1(5.10.0):
7.openEuler-22.03-LTS-SP2(5.10.0):
8.openEuler-22.03-LTS-SP3(5.10.0):

修复是否涉及abi变化(是/否)：
1.master(6.1.0):
2.openEuler-20.03-LTS-SP1(4.19.90):
3.openEuler-20.03-LTS-SP4(4.19.90):
4.openEuler-22.03-LTS(5.10.0):
5.openEuler-22.03-LTS-Next(5.10.0):
6.openEuler-22.03-LTS-SP1(5.10.0):
7.openEuler-22.03-LTS-SP2(5.10.0):
8.openEuler-22.03-LTS-SP3(5.10.0):

-----------------------------------------------------------------------
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

<table><tr><th white-space: nowrap;>参考网址</th> <th white-space: nowrap;>关联pr</th> <th white-space: nowrap;>状态</th> <th white-space: nowrap;>补丁链接</th></tr><tr><td rowspan="1">https://nvd.nist.gov/vuln/detail/CVE-2023-52574</td><td>None</td><td>None</td><td><a href=https://git.kernel.org/stable/c/1779eb51b9cc628cee551f252701a85a2a50a457>https://git.kernel.org/stable/c/1779eb51b9cc628cee551f252701a85a2a50a457</a> <a href=https://git.kernel.org/stable/c/2f0acb0736ecc3eb85dc80ad2790d634dcb10b58>https://git.kernel.org/stable/c/2f0acb0736ecc3eb85dc80ad2790d634dcb10b58</a> <a href=https://git.kernel.org/stable/c/b44dd92e2afd89eb6e9d27616858e72a67bdc1a7>https://git.kernel.org/stable/c/b44dd92e2afd89eb6e9d27616858e72a67bdc1a7</a> <a href=https://git.kernel.org/stable/c/a7fb47b9711101d2405b0eb1276fb1f9b9b270c7>https://git.kernel.org/stable/c/a7fb47b9711101d2405b0eb1276fb1f9b9b270c7</a> <a href=https://git.kernel.org/stable/c/492032760127251e5540a5716a70996bacf2a3fd>https://git.kernel.org/stable/c/492032760127251e5540a5716a70996bacf2a3fd</a> <a href=https://git.kernel.org/stable/c/cac50d9f5d876be32cb9aa21c74018468900284d>https://git.kernel.org/stable/c/cac50d9f5d876be32cb9aa21c74018468900284d</a> <a href=https://git.kernel.org/stable/c/cd05eec2ee0cc396813a32ef675634e403748255>https://git.kernel.org/stable/c/cd05eec2ee0cc396813a32ef675634e403748255</a> <a href=https://git.kernel.org/stable/c/c5f6478686bb45f453031594ae19b6c9723a780d>https://git.kernel.org/stable/c/c5f6478686bb45f453031594ae19b6c9723a780d</a></td></tr><tr><td rowspan="1">https://ubuntu.com/security/CVE-2023-52574</td><td>None</td><td>None</td><td><a href=https://discourse.ubuntu.com/c/ubuntu-pro>https://discourse.ubuntu.com/c/ubuntu-pro</a></td></tr><tr><td rowspan="1">https://www.opencve.io/cve/CVE-2023-52574</td><td>None</td><td>None</td><td><a href=https://git.kernel.org/stable/c/1779eb51b9cc628cee551f252701a85a2a50a457>https://git.kernel.org/stable/c/1779eb51b9cc628cee551f252701a85a2a50a457</a> <a href=https://git.kernel.org/stable/c/2f0acb0736ecc3eb85dc80ad2790d634dcb10b58>https://git.kernel.org/stable/c/2f0acb0736ecc3eb85dc80ad2790d634dcb10b58</a> <a href=https://git.kernel.org/stable/c/b44dd92e2afd89eb6e9d27616858e72a67bdc1a7>https://git.kernel.org/stable/c/b44dd92e2afd89eb6e9d27616858e72a67bdc1a7</a> <a href=https://git.kernel.org/stable/c/a7fb47b9711101d2405b0eb1276fb1f9b9b270c7>https://git.kernel.org/stable/c/a7fb47b9711101d2405b0eb1276fb1f9b9b270c7</a> <a href=https://git.kernel.org/stable/c/492032760127251e5540a5716a70996bacf2a3fd>https://git.kernel.org/stable/c/492032760127251e5540a5716a70996bacf2a3fd</a> <a href=https://git.kernel.org/stable/c/cac50d9f5d876be32cb9aa21c74018468900284d>https://git.kernel.org/stable/c/cac50d9f5d876be32cb9aa21c74018468900284d</a> <a href=https://git.kernel.org/stable/c/cd05eec2ee0cc396813a32ef675634e403748255>https://git.kernel.org/stable/c/cd05eec2ee0cc396813a32ef675634e403748255</a> <a href=https://git.kernel.org/stable/c/c5f6478686bb45f453031594ae19b6c9723a780d>https://git.kernel.org/stable/c/c5f6478686bb45f453031594ae19b6c9723a780d</a></td></tr><tr><td>https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2023-52574</td><td></td><td></td><td></td></tr><tr><td>https://security-tracker.debian.org/tracker/CVE-2023-52574</td><td></td><td></td><td></td></tr></table>

> 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](https://gitee.com/openeuler/cve-manager/blob/master/cve-agency-manager/cve_tracking/README.md)。
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-2023-52574

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

team: fix null-ptr-deref when team device type is changed

Get a null-ptr-deref bug as follows with reproducer [1].

BUG: kernel NULL pointer dereference, address: 0000000000000228
...
RIP: 0010:vlan_dev_hard_header+0x35/0x140 [8021q]
...
Call Trace:
 <TASK>
 ? __die+0x24/0x70
 ? page_fault_oops+0x82/0x150
 ? exc_page_fault+0x69/0x150
 ? asm_exc_page_fault+0x26/0x30
 ? vlan_dev_hard_header+0x35/0x140 [8021q]
 ? vlan_dev_hard_header+0x8e/0x140 [8021q]
 neigh_connected_output+0xb2/0x100
 ip6_finish_output2+0x1cb/0x520
 ? nf_hook_slow+0x43/0xc0
 ? ip6_mtu+0x46/0x80
 ip6_finish_output+0x2a/0xb0
 mld_sendpack+0x18f/0x250
 mld_ifc_work+0x39/0x160
 process_one_work+0x1e6/0x3f0
 worker_thread+0x4d/0x2f0
 ? __pfx_worker_thread+0x10/0x10
 kthread+0xe5/0x120
 ? __pfx_kthread+0x10/0x10
 ret_from_fork+0x34/0x50
 ? __pfx_kthread+0x10/0x10
 ret_from_fork_asm+0x1b/0x30

[1]
$ teamd -t team0 -d -c '{"runner": {"name": "loadbalance"}}'
$ ip link add name t-dummy type dummy
$ ip link add link t-dummy name t-dummy.100 type vlan id 100
$ ip link add name t-nlmon type nlmon
$ ip link set t-nlmon master team0
$ ip link set t-nlmon nomaster
$ ip link set t-dummy up
$ ip link set team0 up
$ ip link set t-dummy.100 down
$ ip link set t-dummy.100 master team0

When enslave a vlan device to team device and team device type is changed
from non-ether to ether, header_ops of team device is changed to
vlan_header_ops. That is incorrect and will trigger null-ptr-deref
for vlan->real_dev in vlan_dev_hard_header() because team device is not
a vlan device.

Cache eth_header_ops in team_setup(), then assign cached header_ops to
header_ops of team net device when its type is changed from non-ether
to ether to fix the bug.

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-SP1(4.19.90):受影响
2.openEuler-20.03-LTS-SP4:受影响
3.openEuler-22.03-LTS:受影响
4.openEuler-22.03-LTS-SP1:受影响
5.openEuler-22.03-LTS-SP2:受影响
6.openEuler-22.03-LTS-SP3:受影响
7.master(6.1.0):不受影响
8.openEuler-22.03-LTS-Next:受影响
9.openEuler-24.03-LTS:不受影响

修复是否涉及abi变化(是/否)：
1.openEuler-20.03-LTS-SP1(4.19.90):否
2.openEuler-20.03-LTS-SP4:否
3.openEuler-22.03-LTS:否
4.openEuler-22.03-LTS-SP1:否
5.openEuler-22.03-LTS-SP2:否
6.openEuler-22.03-LTS-SP3:否
7.master(6.1.0):否
8.openEuler-22.03-LTS-Next:否
9.openEuler-24.03-LTS:否

CVE-2023-52574

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

team: fix null-ptr-deref when team device type is changed

Get a null-ptr-deref bug as follows with reproducer [1].

BUG: kernel NULL pointer dereference, address: 0000000000000228
...
RIP: 0010:vlan_dev_hard_header+0x35/0x140 [8021q]
...
Call Trace:
 <TASK>
 ? __die+0x24/0x70
 ? page_fault_oops+0x82/0x150
 ? exc_page_fault+0x69/0x150
 ? asm_exc_page_fault+0x26/0x30
 ? vlan_dev_hard_header+0x35/0x140 [8021q]
 ? vlan_dev_hard_header+0x8e/0x140 [8021q]
 neigh_connected_output+0xb2/0x100
 ip6_finish_output2+0x1cb/0x520
 ? nf_hook_slow+0x43/0xc0
 ? ip6_mtu+0x46/0x80
 ip6_finish_output+0x2a/0xb0
 mld_sendpack+0x18f/0x250
 mld_ifc_work+0x39/0x160
 process_one_work+0x1e6/0x3f0
 worker_thread+0x4d/0x2f0
 ? __pfx_worker_thread+0x10/0x10
 kthread+0xe5/0x120
 ? __pfx_kthread+0x10/0x10
 ret_from_fork+0x34/0x50
 ? __pfx_kthread+0x10/0x10
 ret_from_fork_asm+0x1b/0x30

[1]
$ teamd -t team0 -d -c '{"runner": {"name": "loadbalance"}}'
$ ip link add name t-dummy type dummy
$ ip link add link t-dummy name t-dummy.100 type vlan id 100
$ ip link add name t-nlmon type nlmon
$ ip link set t-nlmon master team0
$ ip link set t-nlmon nomaster
$ ip link set t-dummy up
$ ip link set team0 up
$ ip link set t-dummy.100 down
$ ip link set t-dummy.100 master team0

When enslave a vlan device to team device and team device type is changed
from non-ether to ether, header_ops of team device is changed to
vlan_header_ops. That is incorrect and will trigger null-ptr-deref
for vlan->real_dev in vlan_dev_hard_header() because team device is not
a vlan device.

Cache eth_header_ops in team_setup(), then assign cached header_ops to
header_ops of team net device when its type is changed from non-ether
to ether to fix the bug.

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-SP1:受影响
2.openEuler-20.03-LTS-SP4:不受影响
3.openEuler-22.03-LTS:受影响
4.openEuler-22.03-LTS-SP1:受影响
5.openEuler-22.03-LTS-SP2:受影响
6.openEuler-22.03-LTS-SP3:受影响
7.master(6.1.0):不受影响
8.openEuler-22.03-LTS-Next:不受影响
9.openEuler-24.03-LTS:不受影响
10.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-SP1(4.19.90):否
2.openEuler-20.03-LTS-SP4:否
3.openEuler-22.03-LTS:否
4.openEuler-22.03-LTS-SP1:否
5.openEuler-22.03-LTS-SP2:否
6.openEuler-22.03-LTS-SP3:否
7.master(6.1.0):否
8.openEuler-22.03-LTS-Next:否
9.openEuler-24.03-LTS:否
10.openEuler-24.03-LTS-Next:否

===========================================================

CVE-2023-52574

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

team: fix null-ptr-deref when team device type is changed

Get a null-ptr-deref bug as follows with reproducer [1].

BUG: kernel NULL pointer dereference, address: 0000000000000228
...
RIP: 0010:vlan_dev_hard_header+0x35/0x140 [8021q]
...
Call Trace:
 <TASK>
 ? __die+0x24/0x70
 ? page_fault_oops+0x82/0x150
 ? exc_page_fault+0x69/0x150
 ? asm_exc_page_fault+0x26/0x30
 ? vlan_dev_hard_header+0x35/0x140 [8021q]
 ? vlan_dev_hard_header+0x8e/0x140 [8021q]
 neigh_connected_output+0xb2/0x100
 ip6_finish_output2+0x1cb/0x520
 ? nf_hook_slow+0x43/0xc0
 ? ip6_mtu+0x46/0x80
 ip6_finish_output+0x2a/0xb0
 mld_sendpack+0x18f/0x250
 mld_ifc_work+0x39/0x160
 process_one_work+0x1e6/0x3f0
 worker_thread+0x4d/0x2f0
 ? __pfx_worker_thread+0x10/0x10
 kthread+0xe5/0x120
 ? __pfx_kthread+0x10/0x10
 ret_from_fork+0x34/0x50
 ? __pfx_kthread+0x10/0x10
 ret_from_fork_asm+0x1b/0x30

[1]
$ teamd -t team0 -d -c '{"runner": {"name": "loadbalance"}}'
$ ip link add name t-dummy type dummy
$ ip link add link t-dummy name t-dummy.100 type vlan id 100
$ ip link add name t-nlmon type nlmon
$ ip link set t-nlmon master team0
$ ip link set t-nlmon nomaster
$ ip link set t-dummy up
$ ip link set team0 up
$ ip link set t-dummy.100 down
$ ip link set t-dummy.100 master team0

When enslave a vlan device to team device and team device type is changed
from non-ether to ether, header_ops of team device is changed to
vlan_header_ops. That is incorrect and will trigger null-ptr-deref
for vlan->real_dev in vlan_dev_hard_header() because team device is not
a vlan device.

Cache eth_header_ops in team_setup(), then assign cached header_ops to
header_ops of team net device when its type is changed from non-ether
to ether to fix the bug.

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-SP1:受影响
2.openEuler-20.03-LTS-SP4:不受影响
3.openEuler-22.03-LTS:受影响
4.openEuler-22.03-LTS-SP1:受影响
5.openEuler-22.03-LTS-SP2:受影响
6.openEuler-22.03-LTS-SP3:受影响
7.master(6.1.0):不受影响
8.openEuler-22.03-LTS-Next:不受影响
9.openEuler-24.03-LTS:不受影响
10.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-SP1(4.19.90):否
2.openEuler-20.03-LTS-SP4:否
3.openEuler-22.03-LTS:否
4.openEuler-22.03-LTS-SP1:否
5.openEuler-22.03-LTS-SP2:否
6.openEuler-22.03-LTS-SP3:否
7.master(6.1.0):否
8.openEuler-22.03-LTS-Next:否
9.openEuler-24.03-LTS:否
10.openEuler-24.03-LTS-Next:否

===========================================================

src-openEuler/kernel

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CVE-2023-52574

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