CVE-2022-49034

一、漏洞信息
 漏洞编号：[CVE-2022-49034](https://nvd.nist.gov/vuln/detail/CVE-2022-49034)
 漏洞归属组件：[kernel](https://gitee.com/src-openeuler/kernel)
 漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.19,6.4.0,6.6.0
 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:sh: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACKWhen CONFIG_CPUMASK_OFFSTACK and CONFIG_DEBUG_PER_CPU_MAPS are selected,cpu_max_bits_warn() generates a runtime warning similar as below whenshowing /proc/cpuinfo. Fix this by using nr_cpu_ids (the runtime limit)instead of NR_CPUS to iterate CPUs.[    3.052463] ------------[ cut here ]------------[    3.059679] WARNING: CPU: 3 PID: 1 at include/linux/cpumask.h:108 show_cpuinfo+0x5e8/0x5f0[    3.070072] Modules linked in: efivarfs autofs4[    3.076257] CPU: 0 PID: 1 Comm: systemd Not tainted 5.19-rc5+ #1052[    3.099465] Stack : 9000000100157b08 9000000000f18530 9000000000cf846c 9000000100154000[    3.109127]         9000000100157a50 0000000000000000 9000000100157a58 9000000000ef7430[    3.118774]         90000001001578e8 0000000000000040 0000000000000020 ffffffffffffffff[    3.128412]         0000000000aaaaaa 1ab25f00eec96a37 900000010021de80 900000000101c890[    3.138056]         0000000000000000 0000000000000000 0000000000000000 0000000000aaaaaa[    3.147711]         ffff8000339dc220 0000000000000001 0000000006ab4000 0000000000000000[    3.157364]         900000000101c998 0000000000000004 9000000000ef7430 0000000000000000[    3.167012]         0000000000000009 000000000000006c 0000000000000000 0000000000000000[    3.176641]         9000000000d3de08 9000000001639390 90000000002086d8 00007ffff0080286[    3.186260]         00000000000000b0 0000000000000004 0000000000000000 0000000000071c1c[    3.195868]         ...[    3.199917] Call Trace:[    3.203941] [<90000000002086d8>] show_stack+0x38/0x14c[    3.210666] [<9000000000cf846c>] dump_stack_lvl+0x60/0x88[    3.217625] [<900000000023d268>] __warn+0xd0/0x100[    3.223958] [<9000000000cf3c90>] warn_slowpath_fmt+0x7c/0xcc[    3.231150] [<9000000000210220>] show_cpuinfo+0x5e8/0x5f0[    3.238080] [<90000000004f578c>] seq_read_iter+0x354/0x4b4[    3.245098] [<90000000004c2e90>] new_sync_read+0x17c/0x1c4[    3.252114] [<90000000004c5174>] vfs_read+0x138/0x1d0[    3.258694] [<90000000004c55f8>] ksys_read+0x70/0x100[    3.265265] [<9000000000cfde9c>] do_syscall+0x7c/0x94[    3.271820] [<9000000000202fe4>] handle_syscall+0xc4/0x160[    3.281824] ---[ end trace 8b484262b4b8c24c ]---
 漏洞公开时间：2024-12-27 22:15:22
 漏洞创建时间：2024-12-27 22:43:06
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2022-49034
<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/09faf32c682ea4a547200b8b9e04d8b3c8e84b55 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/2b6b8e011fab680a223b5e07a3c64774156ec6fe |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/39373f6f89f52770a5405d30dddd08a27d097872 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/3c891f7c6a4e90bb1199497552f24b26e46383bc |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/701e32900683378d93693fec15d133e2c5f7ada2 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/77755dc95ff2f9a3e473acc1e039f498629949ea |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/8fbb57eabfc8ae67115cb47f904614c99d626a89 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/e2b91997db286a5dd3cca6d5d9c20004851f22eb |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/f8f26cf69003a37ffa947631fc0e6fe6daee624a |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-49034 | https://bugzilla.suse.com/show_bug.cgi?id=1234861 |
| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2022-49034 | https://bugzilla.suse.com/show_bug.cgi?id=1234861 |
| suse_bugzilla | https://git.kernel.org/stable/c/09faf32c682ea4a547200b8b9e04d8b3c8e84b55 | https://bugzilla.suse.com/show_bug.cgi?id=1234861 |
| suse_bugzilla | https://git.kernel.org/stable/c/2b6b8e011fab680a223b5e07a3c64774156ec6fe | https://bugzilla.suse.com/show_bug.cgi?id=1234861 |
| suse_bugzilla | https://git.kernel.org/stable/c/39373f6f89f52770a5405d30dddd08a27d097872 | https://bugzilla.suse.com/show_bug.cgi?id=1234861 |
| suse_bugzilla | https://git.kernel.org/stable/c/3c891f7c6a4e90bb1199497552f24b26e46383bc | https://bugzilla.suse.com/show_bug.cgi?id=1234861 |
| suse_bugzilla | https://git.kernel.org/stable/c/701e32900683378d93693fec15d133e2c5f7ada2 | https://bugzilla.suse.com/show_bug.cgi?id=1234861 |
| suse_bugzilla | https://git.kernel.org/stable/c/77755dc95ff2f9a3e473acc1e039f498629949ea | https://bugzilla.suse.com/show_bug.cgi?id=1234861 |
| suse_bugzilla | https://git.kernel.org/stable/c/8fbb57eabfc8ae67115cb47f904614c99d626a89 | https://bugzilla.suse.com/show_bug.cgi?id=1234861 |
| suse_bugzilla | https://git.kernel.org/stable/c/e2b91997db286a5dd3cca6d5d9c20004851f22eb | https://bugzilla.suse.com/show_bug.cgi?id=1234861 |
| suse_bugzilla | https://git.kernel.org/stable/c/f8f26cf69003a37ffa947631fc0e6fe6daee624a | https://bugzilla.suse.com/show_bug.cgi?id=1234861 |
| suse_bugzilla | https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2022/CVE-2022-49034.mbox | https://bugzilla.suse.com/show_bug.cgi?id=1234861 |

</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>

无
</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:sh: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACKWhen CONFIG_CPUMASK_OFFSTACK and CONFIG_DEBUG_PER_CPU_MAPS are selected,cpu_max_bits_warn() generates a runtime warning similar as below whenshowing /proc/cpuinfo. Fix this by using nr_cpu_ids (the runtime limit)instead of NR_CPUS to iterate CPUs.[    3.052463] ------------[ cut here ]------------[    3.059679] WARNING: CPU: 3 PID: 1 at include/linux/cpumask.h:108 show_cpuinfo+0x5e8/0x5f0[    3.070072] Modules linked in: efivarfs autofs4[    3.076257] CPU: 0 PID: 1 Comm: systemd Not tainted 5.19-rc5+ #1052[    3.099465] Stack : 9000000100157b08 9000000000f18530 9000000000cf846c 9000000100154000[    3.109127]         9000000100157a50 0000000000000000 9000000100157a58 9000000000ef7430[    3.118774]         90000001001578e8 0000000000000040 0000000000000020 ffffffffffffffff[    3.128412]         0000000000aaaaaa 1ab25f00eec96a37 900000010021de80 900000000101c890[    3.138056]         0000000000000000 0000000000000000 0000000000000000 0000000000aaaaaa[    3.147711]         ffff8000339dc220 0000000000000001 0000000006ab4000 0000000000000000[    3.157364]         900000000101c998 0000000000000004 9000000000ef7430 0000000000000000[    3.167012]         0000000000000009 000000000000006c 0000000000000000 0000000000000000[    3.176641]         9000000000d3de08 9000000001639390 90000000002086d8 00007ffff0080286[    3.186260]         00000000000000b0 0000000000000004 0000000000000000 0000000000071c1c[    3.195868]         ...[    3.199917] Call Trace:[    3.203941] [&lt;90000000002086d8&gt;] show_stack+0x38/0x14c[    3.210666] [&lt;9000000000cf846c&gt;] dump_stack_lvl+0x60/0x88[    3.217625] [&lt;900000000023d268&gt;] __warn+0xd0/0x100[    3.223958] [&lt;9000000000cf3c90&gt;] warn_slowpath_fmt+0x7c/0xcc[    3.231150] [&lt;9000000000210220&gt;] show_cpuinfo+0x5e8/0x5f0[    3.238080] [&lt;90000000004f578c&gt;] seq_read_iter+0x354/0x4b4[    3.245098] [&lt;90000000004c2e90&gt;] new_sync_read+0x17c/0x1c4[    3.252114] [&lt;90000000004c5174&gt;] vfs_read+0x138/0x1d0[    3.258694] [&lt;90000000004c55f8&gt;] ksys_read+0x70/0x100[    3.265265] [&lt;9000000000cfde9c&gt;] do_syscall+0x7c/0x94[    3.271820] [&lt;9000000000202fe4&gt;] handle_syscall+0xc4/0x160[    3.281824] ---[ end trace 8b484262b4b8c24c ]---The Linux kernel CVE team has assigned CVE-2022-49034 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):受影响
2.openEuler-22.03-LTS-SP1:受影响
3.openEuler-22.03-LTS-SP3:受影响
4.openEuler-22.03-LTS-SP4:受影响
5.openEuler-24.03-LTS:受影响
6.openEuler-24.03-LTS-SP1:受影响
7.master:不受影响
8.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(4.19.90):否
2.openEuler-22.03-LTS-SP1:否
3.openEuler-22.03-LTS-SP3:否
4.master:否
5.openEuler-24.03-LTS:否
6.openEuler-24.03-LTS-Next:否
7.openEuler-22.03-LTS-SP4:否
8.openEuler-24.03-LTS-SP1:否

原因说明：
  1.openEuler-20.03-LTS-SP4(4.19.90):正常修复
2.openEuler-22.03-LTS-SP1:正常修复
3.openEuler-22.03-LTS-SP3:正常修复
4.openEuler-22.03-LTS-SP4:正常修复
5.openEuler-24.03-LTS:正常修复
6.openEuler-24.03-LTS-SP1:正常修复
7.master:不受影响-漏洞代码不能被攻击者触发
8.openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2025-1037

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), 原因说明)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(6.6.0):
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):
8.openEuler-24.03-LTS-SP1(6.6.0):

修复是否涉及abi变化(是/否)：
1.master(6.6.0):
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):
8.openEuler-24.03-LTS-SP1(6.6.0):

原因说明：
1.master(6.6.0):
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):
8.openEuler-24.03-LTS-SP1(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

CVE-2022-49034

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

sh: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK

When CONFIG_CPUMASK_OFFSTACK and CONFIG_DEBUG_PER_CPU_MAPS are selected,
cpu_max_bits_warn() generates a runtime warning similar as below when
showing /proc/cpuinfo. Fix this by using nr_cpu_ids (the runtime limit)
instead of NR_CPUS to iterate CPUs.

[    3.052463] ------------[ cut here ]------------
[    3.059679] WARNING: CPU: 3 PID: 1 at include/linux/cpumask.h:108 show_cpuinfo+0x5e8/0x5f0
[    3.070072] Modules linked in: efivarfs autofs4
[    3.076257] CPU: 0 PID: 1 Comm: systemd Not tainted 5.19-rc5+ #1052
[    3.099465] Stack : 9000000100157b08 9000000000f18530 9000000000cf846c 9000000100154000
[    3.109127]         9000000100157a50 0000000000000000 9000000100157a58 9000000000ef7430
[    3.118774]         90000001001578e8 0000000000000040 0000000000000020 ffffffffffffffff
[    3.128412]         0000000000aaaaaa 1ab25f00eec96a37 900000010021de80 900000000101c890
[    3.138056]         0000000000000000 0000000000000000 0000000000000000 0000000000aaaaaa
[    3.147711]         ffff8000339dc220 0000000000000001 0000000006ab4000 0000000000000000
[    3.157364]         900000000101c998 0000000000000004 9000000000ef7430 0000000000000000
[    3.167012]         0000000000000009 000000000000006c 0000000000000000 0000000000000000
[    3.176641]         9000000000d3de08 9000000001639390 90000000002086d8 00007ffff0080286
[    3.186260]         00000000000000b0 0000000000000004 0000000000000000 0000000000071c1c
[    3.195868]         ...
[    3.199917] Call Trace:
[    3.203941] [&lt;90000000002086d8&gt;] show_stack+0x38/0x14c
[    3.210666] [&lt;9000000000cf846c&gt;] dump_stack_lvl+0x60/0x88
[    3.217625] [&lt;900000000023d268&gt;] __warn+0xd0/0x100
[    3.223958] [&lt;9000000000cf3c90&gt;] warn_slowpath_fmt+0x7c/0xcc
[    3.231150] [&lt;9000000000210220&gt;] show_cpuinfo+0x5e8/0x5f0
[    3.238080] [&lt;90000000004f578c&gt;] seq_read_iter+0x354/0x4b4
[    3.245098] [&lt;90000000004c2e90&gt;] new_sync_read+0x17c/0x1c4
[    3.252114] [&lt;90000000004c5174&gt;] vfs_read+0x138/0x1d0
[    3.258694] [&lt;90000000004c55f8&gt;] ksys_read+0x70/0x100
[    3.265265] [&lt;9000000000cfde9c&gt;] do_syscall+0x7c/0x94
[    3.271820] [&lt;9000000000202fe4&gt;] handle_syscall+0xc4/0x160
[    3.281824] ---[ end trace 8b484262b4b8c24c ]---

The Linux kernel CVE team has assigned CVE-2022-49034 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:受影响
2.openEuler-22.03-LTS-SP1:受影响
3.openEuler-22.03-LTS-SP3:受影响
4.openEuler-22.03-LTS-SP4:受影响
5.master(6.1.0):不受影响
6.openEuler-24.03-LTS:受影响
7.openEuler-24.03-LTS-Next:不受影响
8.openEuler-24.03-LTS-SP1: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
8.openEuler-24.03-LTS-SP1:否

原因说明：
1.master(23.08.5):不受影响-漏洞代码不能被攻击者触发
2.openEuler-20.03-LTS-SP4:正常修复
3.openEuler-22.03-LTS-SP1:正常修复
4.openEuler-22.03-LTS-SP3:正常修复
5.openEuler-22.03-LTS-SP4:正常修复
6.openEuler-24.03-LTS:正常修复
7.openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发
8.openEuler-24.03-LTS-SP1:正常修复

@sanglipeng 经过 cve-manager 解析, 已分析的内容如下表所示:
| 状态  | 分析项目 | 内容 |
|:--:|:--:|---------|
|已分析|1.影响性分析说明|In the Linux kernel, the following vulnerability has been resolved:sh: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACKWhen CONFIG_CPUMASK_OFFSTACK and CONFIG_DEBUG_PER_CPU_MAPS are selected,cpu_max_bits_warn() generates a runtime warning similar as below whenshowing /proc/cpuinfo. Fix this by using nr_cpu_ids (the runtime limit)instead of NR_CPUS to iterate CPUs.[    3.052463] ------------[ cut here ]------------[    3.059679] WARNING: CPU: 3 PID: 1 at include/linux/cpumask.h:108 show_cpuinfo+0x5e8/0x5f0[    3.070072] Modules linked in: efivarfs autofs4[    3.076257] CPU: 0 PID: 1 Comm: systemd Not tainted 5.19-rc5+ #1052[    3.099465] Stack : 9000000100157b08 9000000000f18530 9000000000cf846c 9000000100154000[    3.109127]         9000000100157a50 0000000000000000 9000000100157a58 9000000000ef7430[    3.118774]         90000001001578e8 0000000000000040 0000000000000020 ffffffffffffffff[    3.128412]         0000000000aaaaaa 1ab25f00eec96a37 900000010021de80 900000000101c890[    3.138056]         0000000000000000 0000000000000000 0000000000000000 0000000000aaaaaa[    3.147711]         ffff8000339dc220 0000000000000001 0000000006ab4000 0000000000000000[    3.157364]         900000000101c998 0000000000000004 9000000000ef7430 0000000000000000[    3.167012]         0000000000000009 000000000000006c 0000000000000000 0000000000000000[    3.176641]         9000000000d3de08 9000000001639390 90000000002086d8 00007ffff0080286[    3.186260]         00000000000000b0 0000000000000004 0000000000000000 0000000000071c1c[    3.195868]         ...[    3.199917] Call Trace:[    3.203941] [&lt;90000000002086d8&gt;] show_stack+0x38/0x14c[    3.210666] [&lt;9000000000cf846c&gt;] dump_stack_lvl+0x60/0x88[    3.217625] [&lt;900000000023d268&gt;] __warn+0xd0/0x100[    3.223958] [&lt;9000000000cf3c90&gt;] warn_slowpath_fmt+0x7c/0xcc[    3.231150] [&lt;9000000000210220&gt;] show_cpuinfo+0x5e8/0x5f0[    3.238080] [&lt;90000000004f578c&gt;] seq_read_iter+0x354/0x4b4[    3.245098] [&lt;90000000004c2e90&gt;] new_sync_read+0x17c/0x1c4[    3.252114] [&lt;90000000004c5174&gt;] vfs_read+0x138/0x1d0[    3.258694] [&lt;90000000004c55f8&gt;] ksys_read+0x70/0x100[    3.265265] [&lt;9000000000cfde9c&gt;] do_syscall+0x7c/0x94[    3.271820] [&lt;9000000000202fe4&gt;] handle_syscall+0xc4/0x160[    3.281824] ---[ end trace 8b484262b4b8c24c ]---The Linux kernel CVE team has assigned CVE-2022-49034 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:受影响,openEuler-22.03-LTS-SP1:受影响,openEuler-22.03-LTS-SP3:受影响,openEuler-22.03-LTS-SP4:受影响,openEuler-24.03-LTS:受影响,openEuler-24.03-LTS-SP1:受影响,master:不受影响,openEuler-24.03-LTS-Next:不受影响|
|已分析|5.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,openEuler-24.03-LTS-SP1:否|
|已分析|6.原因说明|openEuler-20.03-LTS-SP4:正常修复,openEuler-22.03-LTS-SP1:正常修复,openEuler-22.03-LTS-SP3:正常修复,openEuler-22.03-LTS-SP4:正常修复,openEuler-24.03-LTS:正常修复,openEuler-24.03-LTS-SP1:正常修复,master:不受影响-漏洞代码不能被攻击者触发,openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发|

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CVE-2022-49034

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

sh: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK

When CONFIG_CPUMASK_OFFSTACK and CONFIG_DEBUG_PER_CPU_MAPS are selected,
cpu_max_bits_warn() generates a runtime warning similar as below when
showing /proc/cpuinfo. Fix this by using nr_cpu_ids (the runtime limit)
instead of NR_CPUS to iterate CPUs.

[    3.052463] ------------[ cut here ]------------
[    3.059679] WARNING: CPU: 3 PID: 1 at include/linux/cpumask.h:108 show_cpuinfo+0x5e8/0x5f0
[    3.070072] Modules linked in: efivarfs autofs4
[    3.076257] CPU: 0 PID: 1 Comm: systemd Not tainted 5.19-rc5+ #1052
[    3.099465] Stack : 9000000100157b08 9000000000f18530 9000000000cf846c 9000000100154000
[    3.109127]         9000000100157a50 0000000000000000 9000000100157a58 9000000000ef7430
[    3.118774]         90000001001578e8 0000000000000040 0000000000000020 ffffffffffffffff
[    3.128412]         0000000000aaaaaa 1ab25f00eec96a37 900000010021de80 900000000101c890
[    3.138056]         0000000000000000 0000000000000000 0000000000000000 0000000000aaaaaa
[    3.147711]         ffff8000339dc220 0000000000000001 0000000006ab4000 0000000000000000
[    3.157364]         900000000101c998 0000000000000004 9000000000ef7430 0000000000000000
[    3.167012]         0000000000000009 000000000000006c 0000000000000000 0000000000000000
[    3.176641]         9000000000d3de08 9000000001639390 90000000002086d8 00007ffff0080286
[    3.186260]         00000000000000b0 0000000000000004 0000000000000000 0000000000071c1c
[    3.195868]         ...
[    3.199917] Call Trace:
[    3.203941] [&lt;90000000002086d8&gt;] show_stack+0x38/0x14c
[    3.210666] [&lt;9000000000cf846c&gt;] dump_stack_lvl+0x60/0x88
[    3.217625] [&lt;900000000023d268&gt;] __warn+0xd0/0x100
[    3.223958] [&lt;9000000000cf3c90&gt;] warn_slowpath_fmt+0x7c/0xcc
[    3.231150] [&lt;9000000000210220&gt;] show_cpuinfo+0x5e8/0x5f0
[    3.238080] [&lt;90000000004f578c&gt;] seq_read_iter+0x354/0x4b4
[    3.245098] [&lt;90000000004c2e90&gt;] new_sync_read+0x17c/0x1c4
[    3.252114] [&lt;90000000004c5174&gt;] vfs_read+0x138/0x1d0
[    3.258694] [&lt;90000000004c55f8&gt;] ksys_read+0x70/0x100
[    3.265265] [&lt;9000000000cfde9c&gt;] do_syscall+0x7c/0x94
[    3.271820] [&lt;9000000000202fe4&gt;] handle_syscall+0xc4/0x160
[    3.281824] ---[ end trace 8b484262b4b8c24c ]---

The Linux kernel CVE team has assigned CVE-2022-49034 to this issue.

openEuler评分:(评分和向量)
3.9
CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L