CVE-2022-50428— Linux kernel 安全漏洞
一分钟漏洞结论
影响对象
Linux Linux
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于多个差一错误，可能导致未初始化内存泄露。
可能的 ATT&CK 技术 1 AI
T1059 · Command and Scripting Interpreter影响版本矩阵 10
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | aa75f4d3daaeb1389b9cce9d6b84401eaf228d4e< 18f28f13301d1afb8cea9c4ddcecdbff14488ec6 |
affected |
aa75f4d3daaeb1389b9cce9d6b84401eaf228d4e< 5ca65dffdead16572ca046c43fb576b227f7f635 |
affected | ||
aa75f4d3daaeb1389b9cce9d6b84401eaf228d4e< 5439ad45c0d0c8db41eb6f4dce6f778f15a5ee16 |
affected | ||
aa75f4d3daaeb1389b9cce9d6b84401eaf228d4e< 48a6a66db82b8043d298a630f22c62d43550cae5 |
affected | ||
5.10 |
affected | ||
< 5.10 |
unaffected | ||
5.15.87≤ 5.15.* |
unaffected | ||
6.0.18≤ 6.0.* |
unaffected | ||
| … +2 条更多 | |||
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一、 漏洞 CVE-2022-50428 基础信息
漏洞信息
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Vulnerability Title
ext4: fix off-by-one errors in fast-commit block filling
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
ext4: fix off-by-one errors in fast-commit block filling
Due to several different off-by-one errors, or perhaps due to a late
change in design that wasn't fully reflected in the code that was
actually merged, there are several very strange constraints on how
fast-commit blocks are filled with tlv entries:
- tlvs must start at least 10 bytes before the end of the block, even
though the minimum tlv length is 8. Otherwise, the replay code will
ignore them. (BUG: ext4_fc_reserve_space() could violate this
requirement if called with a len of blocksize - 9 or blocksize - 8.
Fortunately, this doesn't seem to happen currently.)
- tlvs must end at least 1 byte before the end of the block. Otherwise
the replay code will consider them to be invalid. This quirk
contributed to a bug (fixed by an earlier commit) where uninitialized
memory was being leaked to disk in the last byte of blocks.
Also, strangely these constraints don't apply to the replay code in
e2fsprogs, which will accept any tlvs in the blocks (with no bounds
checks at all, but that is a separate issue...).
Given that this all seems to be a bug, let's fix it by just filling
blocks with tlv entries in the natural way.
Note that old kernels will be unable to replay fast-commit journals
created by kernels that have this commit.
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于多个差一错误，可能导致未初始化内存泄露。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2022-50428 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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同批安全公告 · Linux · 2025-10-01 · 共 169 条
| CVE-2023-53517 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-39919 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39918 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53454 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-50442 | 8.4 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53493 | 8.4 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53492 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39924 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53510 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-39927 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53506 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-50421 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-50423 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53504 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53495 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53494 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-50437 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53478 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53481 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53486 | 7.8 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 169 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2022-50428
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