CVE-2023-52699

Advisory lineage Upstream: 0 Downstream: 29
Analyzed
Published: 19 May 2024, 10:10
Last modified:11 May 2026, 19:31

Vulnerability Summary

Overall Risk (default)
low
21/100
CVSS Score
5.3 MEDIUM
v3.1 (cve.org)
EPSS Score
0.12% LOW
0% probability +0.04%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

19 May 2024, 10:10
Published
Vulnerability first disclosed
11 May 2026, 19:31
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: sysv: don't call sb_bread() with pointers_lock held syzbot is reporting sleep in atomic context in SysV filesystem [1], for sb_bread() is called with rw_spinlock held. A "write_lock(&pointers_lock) => read_lock(&pointers_lock) deadlock" bug and a "sb_bread() with write_lock(&pointers_lock)" bug were introduced by "Replace BKL for chain locking with sysvfs-private rwlock" in Linux 2.5.12. Then, "[PATCH] err1-40: sysvfs locking fix" in Linux 2.6.8 fixed the former bug by moving pointers_lock lock to the callers, but instead introduced a "sb_bread() with read_lock(&pointers_lock)" bug (which made this problem easier to hit). Al Viro suggested that why not to do like get_branch()/get_block()/ find_shared() in Minix filesystem does. And doing like that is almost a revert of "[PATCH] err1-40: sysvfs locking fix" except that get_branch() from with find_shared() is called without write_lock(&pointers_lock).

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS Trends

Current EPSS score: 0.12%• Percentile: 30%

Techniques & Countermeasures

  • CWE-667•Improper Locking

    The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.

Affected Systems

  • debian•debian_linux

    10.0

  • linux•linux

    ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 13b33feb2ebddc2b1aa607f553566b18a4af1d76 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 1b4fe801b5bedec2b622ddb18e5c9bf26c63d79f | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 674c1c4229e743070e09db63a23442950ff000d1 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < fd203d2c671bdee9ab77090ff394d3b71b627927 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 53cb1e52c9db618c08335984d1ca80db220ccf09 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 89e8524135a3902e7563a5a59b7b5ec1bf4904ac | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < a69224223746ab96d43e5db9d22d136827b7e2d3 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < f123dc86388cb669c3d6322702dc441abc35c31e | 2.6.12

  • linux•linux_kernel

    < 4.19.312 | ≥ 4.20, < 5.4.274 | ≥ 5.5, < 5.10.215 | ≥ 5.11, < 5.15.155 | ≥ 5.16, < 6.1.86 | ≥ 6.2, < 6.6.27 | ≥ 6.7, < 6.8.6

References (10)