CVE-2026-53049
Critical · CVSS 9.8Linux Kernel GFS2 — Missing lock / race condition leading to concurrent transaction corruption
- CVSS
- 9.8
- nvd
- EPSS
- 0.51%
- 40th pct
- KEV
- No
- Class
- oss containerizable
- CWE-667
Description
In the Linux kernel, the following vulnerability has been resolved: gfs2: add some missing log locking Function gfs2_logd() calls the log flushing functions gfs2_ail1_start(), gfs2_ail1_wait(), and gfs2_ail1_empty() without holding sdp->sd_log_flush_lock, but these functions require exclusion against concurrent transactions. To fix that, add a non-locking __gfs2_log_flush() function. Then, in gfs2_logd(), take sdp->sd_log_flush_lock before calling the above mentioned log flushing functions and __gfs2_log_flush().
Search profile — drives PoC discovery
Symbols gfs2_logdgfs2_ail1_startgfs2_ail1_waitgfs2_ail1_empty__gfs2_log_flushgfs2_log_flushsd_log_flush_locksdp->sd_log_flush_lock
Keywords CVE-2026-53049gfs2 log lockinggfs2_logd missing lockgfs2 ail1 sd_log_flush_lock__gfs2_log_flushGFS2 log flush race conditionLinux kernel GFS2 locking vulnerabilitygfs2 logd flush lock PoC
Versions: Fixed in commits: 3b28eb75af, 49d9be0722, 98e8bf249c, bf5fcd9c37, ca95342cb1
Affected packages
| Linux | Kernel | 5.16.0 → 6.1.175 |
| Linux | Kernel | 5.7.0 → 5.15.209 |
| Linux | Kernel | 6.13.0 → 6.18.33 |
| Linux | Kernel | 6.19.0 → 7.0.10 |
| Linux | Kernel | 6.2.0 → 6.6.141 |
| Linux | Kernel | 6.7.0 → 6.12.91 |
References
- https://git.kernel.org/stable/c/3b28eb75afe520972bacc833850c2b30aa0824cd
- https://git.kernel.org/stable/c/49d9be0722da3a4a893ba905720cba1921834ec3
- https://git.kernel.org/stable/c/98e8bf249c790d56de1abc4a5f8bd68035a00921
- https://git.kernel.org/stable/c/bf5fcd9c37c2546beaf7b401d31aefd89017dc3d
- https://git.kernel.org/stable/c/ca95342cb1b39062a03c115830286f0a426053d5
- https://git.kernel.org/stable/c/f2f225cf505ac016132ded21690f3ba0a080a4e8
- https://git.kernel.org/stable/c/fe2c8d051150b90b3ccb85f89e3b1d636cb88ec8
Status: enriched · ingested 2026-07-14T18:00:20.000Z · profiled 2026-07-14T18:30:20.000Z