PT-2024-11261 · Linux+3 · Linux Kernel+3
Syzbot
·
Published
2021-05-31
·
Updated
2026-04-02
·
CVE-2021-47254
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 issue has been resolved in the Linux kernel, specifically in the gfs2 module. The issue arises from the handling of the GLF LRU flag under lru lock in gfs2 glock remove from lru() and gfs2 dispose glock lru(). To ensure correct behavior, the GLF LRU flag is kept across the race window opened by cond resched lock(&lru lock) and is cleared after list del under lru lock.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Use After Free
Found an issue in the description? Have something to add? Feel free to write us 👾
Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Linux Kernel
Suse
Ubuntu