---
id: CVE-2026-53049
title: 'gfs2: add some missing log locking'
summary: |-
  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…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 5e4c7632aae1cce137792647f4fb6f599d1da893 <
    3b28eb75afe520972bacc833850c2b30aa0824cd
  - >-
    Linux >= 5e4c7632aae1cce137792647f4fb6f599d1da893 <
    ca95342cb1b39062a03c115830286f0a426053d5
  - >-
    Linux >= 5e4c7632aae1cce137792647f4fb6f599d1da893 <
    bf5fcd9c37c2546beaf7b401d31aefd89017dc3d
  - >-
    Linux >= 5e4c7632aae1cce137792647f4fb6f599d1da893 <
    f2f225cf505ac016132ded21690f3ba0a080a4e8
  - >-
    Linux >= 5e4c7632aae1cce137792647f4fb6f599d1da893 <
    49d9be0722da3a4a893ba905720cba1921834ec3
  - >-
    Linux >= 5e4c7632aae1cce137792647f4fb6f599d1da893 <
    98e8bf249c790d56de1abc4a5f8bd68035a00921
  - >-
    Linux >= 5e4c7632aae1cce137792647f4fb6f599d1da893 <
    fe2c8d051150b90b3ccb85f89e3b1d636cb88ec8
  - Linux 5.7
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-10-16T15:24:53.809921Z'
published: '2026-06-24'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T15:31:29.591Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-53049'
references:
  - url: 'https://git.kernel.org/stable/c/3b28eb75afe520972bacc833850c2b30aa0824cd'
  - url: 'https://git.kernel.org/stable/c/ca95342cb1b39062a03c115830286f0a426053d5'
  - url: 'https://git.kernel.org/stable/c/bf5fcd9c37c2546beaf7b401d31aefd89017dc3d'
  - url: 'https://git.kernel.org/stable/c/f2f225cf505ac016132ded21690f3ba0a080a4e8'
  - url: 'https://git.kernel.org/stable/c/49d9be0722da3a4a893ba905720cba1921834ec3'
  - url: 'https://git.kernel.org/stable/c/98e8bf249c790d56de1abc4a5f8bd68035a00921'
  - url: 'https://git.kernel.org/stable/c/fe2c8d051150b90b3ccb85f89e3b1d636cb88ec8'
tags:
  - cve.org
epss: 0.00388
epssPercentile: 0.31306
ingestedAt: '2026-10-16T17:24:46.728Z'
---

## Overview

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().

## Affected

- `Linux >= 5e4c7632aae1cce137792647f4fb6f599d1da893 < 3b28eb75afe520972bacc833850c2b30aa0824cd`
- `Linux >= 5e4c7632aae1cce137792647f4fb6f599d1da893 < ca95342cb1b39062a03c115830286f0a426053d5`
- `Linux >= 5e4c7632aae1cce137792647f4fb6f599d1da893 < bf5fcd9c37c2546beaf7b401d31aefd89017dc3d`
- `Linux >= 5e4c7632aae1cce137792647f4fb6f599d1da893 < f2f225cf505ac016132ded21690f3ba0a080a4e8`
- `Linux >= 5e4c7632aae1cce137792647f4fb6f599d1da893 < 49d9be0722da3a4a893ba905720cba1921834ec3`
- `Linux >= 5e4c7632aae1cce137792647f4fb6f599d1da893 < 98e8bf249c790d56de1abc4a5f8bd68035a00921`
- `Linux >= 5e4c7632aae1cce137792647f4fb6f599d1da893 < fe2c8d051150b90b3ccb85f89e3b1d636cb88ec8`
- `Linux 5.7`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.