CVE-2023-52574

一、漏洞信息
漏洞编号：CVE-2023-52574
漏洞归属组件：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: ? __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

更多参考(点击展开)

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

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：

详情(点击展开)

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

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: ? __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

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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;
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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

参考网址	关联pr	状态	补丁链接
https://nvd.nist.gov/vuln/detail/CVE-2023-52574	None	None	https://git.kernel.org/stable/c/1779eb51b9cc628cee551f252701a85a2a50a457 https://git.kernel.org/stable/c/2f0acb0736ecc3eb85dc80ad2790d634dcb10b58 https://git.kernel.org/stable/c/b44dd92e2afd89eb6e9d27616858e72a67bdc1a7 https://git.kernel.org/stable/c/a7fb47b9711101d2405b0eb1276fb1f9b9b270c7 https://git.kernel.org/stable/c/492032760127251e5540a5716a70996bacf2a3fd https://git.kernel.org/stable/c/cac50d9f5d876be32cb9aa21c74018468900284d https://git.kernel.org/stable/c/cd05eec2ee0cc396813a32ef675634e403748255 https://git.kernel.org/stable/c/c5f6478686bb45f453031594ae19b6c9723a780d
https://ubuntu.com/security/CVE-2023-52574	None	None	https://discourse.ubuntu.com/c/ubuntu-pro
https://www.opencve.io/cve/CVE-2023-52574	None	None	https://git.kernel.org/stable/c/1779eb51b9cc628cee551f252701a85a2a50a457 https://git.kernel.org/stable/c/2f0acb0736ecc3eb85dc80ad2790d634dcb10b58 https://git.kernel.org/stable/c/b44dd92e2afd89eb6e9d27616858e72a67bdc1a7 https://git.kernel.org/stable/c/a7fb47b9711101d2405b0eb1276fb1f9b9b270c7 https://git.kernel.org/stable/c/492032760127251e5540a5716a70996bacf2a3fd https://git.kernel.org/stable/c/cac50d9f5d876be32cb9aa21c74018468900284d https://git.kernel.org/stable/c/cd05eec2ee0cc396813a32ef675634e403748255 https://git.kernel.org/stable/c/c5f6478686bb45f453031594ae19b6c9723a780d
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2023-52574
https://security-tracker.debian.org/tracker/CVE-2023-52574

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

@ci-robot 请确认分支: master,openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP4,openEuler-22.03-LTS,openEuler-22.03-LTS-Next,openEuler-22.03-LTS-SP1,openEuler-22.03-LTS-SP2,openEuler-22.03-LTS-SP3,openEuler-24.03-LTS 受影响/不受影响.
请确认分支信息是否填写完整,否则将无法关闭当前issue.

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请确认分支信息是否填写完整,否则将无法关闭当前issue.

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:

? __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:

? __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

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

@成坚 (CHENG Jian) ,@Xie XiuQi ,@YangYingliang ,@pi3orama ,@jiaoff ,@郭梦琪
关闭issue前,需要将受影响的分支在合并pr时关联上当前issue编号: #I95ATZ:CVE-2023-52574
受影响分支: openEuler-20.03-LTS-SP1/openEuler-22.03-LTS/openEuler-22.03-LTS-SP1/openEuler-22.03-LTS-SP2
具体操作参考: https://gitee.com/help/articles/4142

@成坚 (CHENG Jian) ,@Xie XiuQi ,@YangYingliang ,@pi3orama ,@jiaoff ,@openeuler-sync-bot
关闭issue前,需要将受影响的分支在合并pr时关联上当前issue编号: #I95ATZ:CVE-2023-52574
受影响分支: openEuler-20.03-LTS-SP1/openEuler-22.03-LTS-SP1/openEuler-22.03-LTS-SP2
具体操作参考: https://gitee.com/help/articles/4142

@成坚 (CHENG Jian) ,@Xie XiuQi ,@YangYingliang ,@pi3orama ,@jiaoff ,@openeuler-sync-bot
关闭issue前,需要将受影响的分支在合并pr时关联上当前issue编号: #I95ATZ:CVE-2023-52574
受影响分支: openEuler-20.03-LTS-SP1
具体操作参考: https://gitee.com/help/articles/4142

@成坚 (CHENG Jian) ,@Xie XiuQi ,@YangYingliang ,@pi3orama ,@jiaoff ,@zhangjialin
关闭issue前,需要将受影响的分支在合并pr时关联上当前issue编号: #I95ATZ:CVE-2023-52574
受影响分支: openEuler-20.03-LTS-SP1
具体操作参考: https://gitee.com/help/articles/4142

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:

? __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

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

@成坚 (CHENG Jian) ,@Xie XiuQi ,@YangYingliang ,@pi3orama ,@jiaoff ,@郭梦琪
关闭issue前,需要将受影响的分支在合并pr时关联上当前issue编号: #I95ATZ:CVE-2023-52574
受影响分支: openEuler-20.03-LTS-SP1
具体操作参考: https://gitee.com/help/articles/4142

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