PT-2025-37551 · Btrfs+3 · Btrfs+3
CVE-2023-53187
·
Published
2023-07-11
·
Updated
2026-05-26
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A use-after-free vulnerability exists in the Linux kernel's Btrfs file system related to block group management. Specifically, if a task creates a new block group that becomes unused before its creation is finalized, attempting to delete the block group can lead to a use-after-free condition. This occurs because the block group is moved between lists without proper reference counting, potentially resulting in a double decrement of the reference count and an assertion failure, as observed during testing with generic/297 from fstests.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Use After Free
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Related Identifiers
Affected Products
Astra Linux
Btrfs
Linux Kernel
Suse