CVE-2024-26956— 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，该漏洞源于无法检测 btree 和直接映射中的 DAT 损坏。
可能的 ATT&CK 技术 1 AI
T1562.001影响版本矩阵 20
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | c3a7abf06ce719a51139e62a034590be99abbc2c< b67189690eb4b7ecc84ae16fa1e880e0123eaa35 |
affected |
c3a7abf06ce719a51139e62a034590be99abbc2c< 9cbe1ad5f4354f4df1445e5f4883983328cd6d8e |
affected | ||
c3a7abf06ce719a51139e62a034590be99abbc2c< c3b5c5c31e723b568f83d8cafab8629d9d830ffb |
affected | ||
c3a7abf06ce719a51139e62a034590be99abbc2c< 2e2619ff5d0def4bb6c2037a32a6eaa28dd95c84 |
affected | ||
c3a7abf06ce719a51139e62a034590be99abbc2c< 46b832e09d43b394ac0f6d9485d2b1a06593f0b7 |
affected | ||
c3a7abf06ce719a51139e62a034590be99abbc2c< f69e81396aea66304d214f175aa371f1b5578862 |
affected | ||
c3a7abf06ce719a51139e62a034590be99abbc2c< a8e4d098de1c0f4c5c1f2ed4633a860f0da6d713 |
affected | ||
c3a7abf06ce719a51139e62a034590be99abbc2c< 82827ca21e7c8a91384c5baa656f78a5adfa4ab4 |
affected | ||
| … +12 条更多 | |||
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一、 漏洞 CVE-2024-26956 基础信息
漏洞信息
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Vulnerability Title
nilfs2: fix failure to detect DAT corruption in btree and direct mappings
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
nilfs2: fix failure to detect DAT corruption in btree and direct mappings
Patch series "nilfs2: fix kernel bug at submit_bh_wbc()".
This resolves a kernel BUG reported by syzbot. Since there are two
flaws involved, I've made each one a separate patch.
The first patch alone resolves the syzbot-reported bug, but I think
both fixes should be sent to stable, so I've tagged them as such.
This patch (of 2):
Syzbot has reported a kernel bug in submit_bh_wbc() when writing file data
to a nilfs2 file system whose metadata is corrupted.
There are two flaws involved in this issue.
The first flaw is that when nilfs_get_block() locates a data block using
btree or direct mapping, if the disk address translation routine
nilfs_dat_translate() fails with internal code -ENOENT due to DAT metadata
corruption, it can be passed back to nilfs_get_block(). This causes
nilfs_get_block() to misidentify an existing block as non-existent,
causing both data block lookup and insertion to fail inconsistently.
The second flaw is that nilfs_get_block() returns a successful status in
this inconsistent state. This causes the caller __block_write_begin_int()
or others to request a read even though the buffer is not mapped,
resulting in a BUG_ON check for the BH_Mapped flag in submit_bh_wbc()
failing.
This fixes the first issue by changing the return value to code -EINVAL
when a conversion using DAT fails with code -ENOENT, avoiding the
conflicting condition that leads to the kernel bug described above. Here,
code -EINVAL indicates that metadata corruption was detected during the
block lookup, which will be properly handled as a file system error and
converted to -EIO when passing through the nilfs2 bmap layer.
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，该漏洞源于无法检测 btree 和直接映射中的 DAT 损坏。
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-2024-26956 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2024-26956 邮件列表归档 (2)
CVE-2024-26956 其他参考 (9)
同批安全公告 · Linux · 2024-05-01 · 共 159 条
| CVE-2024-27388 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-26953 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-26931 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26990 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-27053 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26952 | 8.3 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26936 | 8.2 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-27018 | 8.2 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26980 | 8.2 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26954 | 8.1 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26994 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26966 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26974 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26976 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-27062 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-27061 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26983 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-27058 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-27056 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-27017 | 7.8 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 159 条。 查看全部 → →
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Same vendor: Linux
-
CVE-2026-98431
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CVE-2026-98430
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V. Comments for CVE-2024-26956
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