CVE-2022-49992

一、漏洞信息
 漏洞编号：[CVE-2022-49992](https://nvd.nist.gov/vuln/detail/CVE-2022-49992)
 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.x分值：
  BaseScore：5.5 Medium
  Vector：CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
 漏洞简述：
  In the Linux kernel, the following vulnerability has been resolved:mm/mprotect: only reference swap pfn page if type matchYu Zhao reported a bug after the commit  mm/swap: Add swp_offset_pfn() tofetch PFN from swap entry  added a check in swp_offset_pfn() for swap type [1]:  kernel BUG at include/linux/swapops.h:117!  CPU: 46 PID: 5245 Comm: EventManager_De Tainted: G S         O L 6.0.0-dbg-DEV #2  RIP: 0010:pfn_swap_entry_to_page+0x72/0xf0  Code: c6 48 8b 36 48 83 fe ff 74 53 48 01 d1 48 83 c1 08 48 8b 09 f6  c1 01 75 7b 66 90 48 89 c1 48 8b 09 f6 c1 01 74 74 5d c3 eb 9e <0f> 0b  48 ba ff ff ff ff 03 00 00 00 eb ae a9 ff 0f 00 00 75 13 48  RSP: 0018:ffffa59e73fabb80 EFLAGS: 00010282  RAX: 00000000ffffffe8 RBX: 0c00000000000000 RCX: ffffcd5440000000  RDX: 1ffffffffff7a80a RSI: 0000000000000000 RDI: 0c0000000000042b  RBP: ffffa59e73fabb80 R08: ffff9965ca6e8bb8 R09: 0000000000000000  R10: ffffffffa5a2f62d R11: 0000030b372e9fff R12: ffff997b79db5738  R13: 000000000000042b R14: 0c0000000000042b R15: 1ffffffffff7a80a  FS:  00007f549d1bb700(0000) GS:ffff99d3cf680000(0000) knlGS:0000000000000000  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033  CR2: 0000440d035b3180 CR3: 0000002243176004 CR4: 00000000003706e0  DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000  DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400  Call Trace:   <TASK>   change_pte_range+0x36e/0x880   change_p4d_range+0x2e8/0x670   change_protection_range+0x14e/0x2c0   mprotect_fixup+0x1ee/0x330   do_mprotect_pkey+0x34c/0x440   __x64_sys_mprotect+0x1d/0x30It triggers because pfn_swap_entry_to_page() could be called upon e.g. agenuine swap entry.Fix it by only calling it when it s a write migration entry where the page*is used.[1] https://lore.kernel.org/lkml/CAOUHufaVC2Za-p8m0aiHw6YkheDcrO-C3wRGixwDS32VTS+k1w@mail.gmail.com/
 漏洞公开时间：2025-06-18 19:15:26
 漏洞创建时间：2025-06-19 10:27:51
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2022-49992
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
|  | https://git.kernel.org/stable/c/3d2f78f08cd8388035ac375e731ec1ac1b79b09d |  |
|  | https://lore.kernel.org/linux-cve-announce/2025061825-CVE-2022-49992-c5f0@gregkh/T |  |
|  | https://www.cve.org/CVERecord?id=CVE-2022-49992 |  |
|  | https://vigilance.fr/vulnerability/Linux-kernel-multiple-vulnerabilities-dated-18-06-2025-47466 |  |
|  | https://bugzilla.redhat.com/show_bug.cgi?id=2373483 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2022-49992 |  |
|  | https://access.redhat.com/security/cve/CVE-2022-49992 |  |
|  | https://git.kernel.org/stable/c/5fcf81e308d1f4ae95f31690d2a80b7061385ff9 |  |

</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:
  七彩瞬析开源风险感知平台
 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  |
| ------- | -------- | ------- | -------- | --------- |
| gregkh/linux |  | https://github.com/gregkh/linux/commit/5fcf81e308d1f4ae95f31690d2a80b7061385ff9.patch |  | ljqc |
|  |  | https://git.kernel.org/stable/c/3d2f78f08cd8388035ac375e731ec1ac1b79b09d |  | nvd |
|  |  | https://git.kernel.org/stable/c/5fcf81e308d1f4ae95f31690d2a80b7061385ff9 |  | nvd |

</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:mm/mprotect: only reference swap pfn page if type matchYu Zhao reported a bug after the commit &#34;mm/swap: Add swp_offset_pfn() tofetch PFN from swap entry&#34; added a check in swp_offset_pfn() for swap type [1]:  kernel BUG at include/linux/swapops.h:117!  CPU: 46 PID: 5245 Comm: EventManager_De Tainted: G S         O L 6.0.0-dbg-DEV #2  RIP: 0010:pfn_swap_entry_to_page+0x72/0xf0  Code: c6 48 8b 36 48 83 fe ff 74 53 48 01 d1 48 83 c1 08 48 8b 09 f6  c1 01 75 7b 66 90 48 89 c1 48 8b 09 f6 c1 01 74 74 5d c3 eb 9e &lt;0f&gt; 0b  48 ba ff ff ff ff 03 00 00 00 eb ae a9 ff 0f 00 00 75 13 48  RSP: 0018:ffffa59e73fabb80 EFLAGS: 00010282  RAX: 00000000ffffffe8 RBX: 0c00000000000000 RCX: ffffcd5440000000  RDX: 1ffffffffff7a80a RSI: 0000000000000000 RDI: 0c0000000000042b  RBP: ffffa59e73fabb80 R08: ffff9965ca6e8bb8 R09: 0000000000000000  R10: ffffffffa5a2f62d R11: 0000030b372e9fff R12: ffff997b79db5738  R13: 000000000000042b R14: 0c0000000000042b R15: 1ffffffffff7a80a  FS:  00007f549d1bb700(0000) GS:ffff99d3cf680000(0000) knlGS:0000000000000000  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033  CR2: 0000440d035b3180 CR3: 0000002243176004 CR4: 00000000003706e0  DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000  DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400  Call Trace:   &lt;TASK&gt;   change_pte_range+0x36e/0x880   change_p4d_range+0x2e8/0x670   change_protection_range+0x14e/0x2c0   mprotect_fixup+0x1ee/0x330   do_mprotect_pkey+0x34c/0x440   __x64_sys_mprotect+0x1d/0x30It triggers because pfn_swap_entry_to_page() could be called upon e.g. agenuine swap entry.Fix it by only calling it when it&#39;s a write migration entry where the page*is used.[1] <ahref= https://lore.kernel.org/lkml/CAOUHufaVC2Za-p8m0aiHw6YkheDcrO-C3wRGixwDS32VTS+k1w@mail.gmail.com/ >https://lore.kernel.org/lkml/CAOUHufaVC2Za-p8m0aiHw6YkheDcrO-C3wRGixwDS32VTS+k1w@mail.gmail.com/</a>The Linux kernel CVE team has assigned CVE-2022-49992 to this issue.
 openEuler评分：
  5.5
 Vector：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.master(6.12.33):不受影响
2.openEuler-20.03-LTS-SP4: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.openEuler-24.03-LTS:不受影响
6.openEuler-24.03-LTS-Next:不受影响
7.openEuler-24.03-LTS-SP1:不受影响
8.openEuler-24.03-LTS-SP2:不受影响
9.openEuler-24.03-LTS-SP3:不受影响

修复是否涉及abi变化(是/否)：
  1.master(6.12.33):否
2.openEuler-20.03-LTS-SP4:否
3.openEuler-22.03-LTS-SP3(5.10.0):否
4.openEuler-22.03-LTS-SP4(5.10.0):否
5.openEuler-24.03-LTS:否
6.openEuler-24.03-LTS-Next:否
7.openEuler-24.03-LTS-SP1:否
8.openEuler-24.03-LTS-SP2:否
9.openEuler-24.03-LTS-SP3:否

原因说明：
  1.master(6.12.33):不受影响-漏洞代码不能被攻击者触发
2.openEuler-20.03-LTS-SP4:不受影响-漏洞代码不存在
3.openEuler-22.03-LTS-SP3(5.10.0):不受影响-漏洞代码不存在
4.openEuler-22.03-LTS-SP4(5.10.0):不受影响-漏洞代码不存在
5.openEuler-24.03-LTS:不受影响-漏洞代码不能被攻击者触发
6.openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发
7.openEuler-24.03-LTS-SP1:不受影响-漏洞代码不能被攻击者触发
8.openEuler-24.03-LTS-SP2:不受影响-漏洞代码不能被攻击者触发
9.openEuler-24.03-LTS-SP3:不受影响-漏洞代码不能被攻击者触发

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