PT-2025-38466 · Linux+3 · Linux Kernel+3
Published
2023-05-23
·
Updated
2026-05-26
·
CVE-2023-53447
CVSS v3.1
4.7
Medium
| Vector | AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A race condition exists within the f2fs filesystem implementation when remounting a read-write filesystem. Specifically, the issue arises because the
f2fs remount() function resets mount options to their defaults before updating them based on parsed options, creating a window where a race condition can occur between the remount operation and a fallocate call. This race condition can lead to a null pointer dereference within the extent tree management functions, potentially resulting in a general protection fault. The vulnerability occurs when the READ EXTENT CACHE option is involved.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Race Condition
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Weakness Enumeration
Related Identifiers
Affected Products
Debian
Linux Kernel
Suse
F2Fs