CVE-2026-53048
gfs2: prevent NULL pointer dereference during unmount
Description
In the Linux kernel, the following vulnerability has been resolved: gfs2: prevent NULL pointer dereference during unmount When flushing out outstanding glock work during an unmount, gfs2_log_flush() can be called when sdp->sd_jdesc has already been deallocated and sdp->sd_jdesc is NULL. Commit 35264909e9d1 ("gfs2: Fix NULL pointer dereference in gfs2_log_flush") added a check for that to gfs2_log_flush() itself, but it missed the sdp->sd_jdesc dereference in gfs2_log_release(). Fix that.
INFO
Published Date :
June 24, 2026, 5:17 p.m.
Last Modified :
July 21, 2026, 5:23 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the Linux kernel.
- Apply the fix for gfs2_log_release().
- Ensure gfs2_log_flush() checks are correct.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-53048.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-53048 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-53048
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-53048 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-53048 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jul. 21, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-476 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.33 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 7.0.10 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.1.162 up to (excluding) 6.1.175 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.15.200 up to (excluding) 5.15.209 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.6.37 up to (excluding) 6.6.141 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.9.8 up to (excluding) 6.12.91 Added Reference Type kernel.org: https://git.kernel.org/stable/c/233a0945a4b1dbe3f38c30afb7d05b76c67f1193 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/2fc4c868c9060f424fd4a7cacb0aec5082aba4de Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/74b4dbb946060a3233604d91859a9abd3708141d Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/abd73229f0e886a91a16ea781ab656bd9b4d1ee8 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/cec55674354794eddb80b914f73a6bf9b7fc304a Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/d8ffae016c4a78693fe1283335d0b6833a9c1366 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/e15f16761594e80b15776980b27c35477655a135 Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 24, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'c3c5cfa3170c0940bc66a142859caac07d19b9d6', 'lessThan': 'cec55674354794eddb80b914f73a6bf9b7fc304a', 'versionType': 'git'}, {'status': 'affected', 'version': '5f6a84cfb33b34610623857bd93919dcb661e29b', 'lessThan': '2fc4c868c9060f424fd4a7cacb0aec5082aba4de', 'versionType': 'git'}, {'status': 'affected', 'version': '3429ef5f50909cee9e498c50f0c499b9397116ce', 'lessThan': '233a0945a4b1dbe3f38c30afb7d05b76c67f1193', 'versionType': 'git'}, {'status': 'affected', 'version': '35264909e9d1973ab9aaa2a1b07cda70f12bb828', 'lessThan': 'e15f16761594e80b15776980b27c35477655a135', 'versionType': 'git'}, {'status': 'affected', 'version': '35264909e9d1973ab9aaa2a1b07cda70f12bb828', 'lessThan': 'd8ffae016c4a78693fe1283335d0b6833a9c1366', 'versionType': 'git'}, {'status': 'affected', 'version': '35264909e9d1973ab9aaa2a1b07cda70f12bb828', 'lessThan': 'abd73229f0e886a91a16ea781ab656bd9b4d1ee8', 'versionType': 'git'}, {'status': 'affected', 'version': '35264909e9d1973ab9aaa2a1b07cda70f12bb828', 'lessThan': '74b4dbb946060a3233604d91859a9abd3708141d', 'versionType': 'git'}, {'status': 'affected', 'version': 'f54f9d5368a4e92ede7dd078a62788dae3a7c6ef', 'versionType': 'git'}, {'status': 'affected', 'version': '5.15.200', 'lessThan': '5.15.209', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.1.162', 'lessThan': '6.1.175', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.6.37', 'lessThan': '6.6.141', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.9.8', 'lessThan': '6.10', 'versionType': 'semver'}], 'programFiles': ['fs/gfs2/log.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.10'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.10', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.15.209', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.175', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.141', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.91', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.33', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.10', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['fs/gfs2/log.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: gfs2: prevent NULL pointer dereference during unmount When flushing out outstanding glock work during an unmount, gfs2_log_flush() can be called when sdp->sd_jdesc has already been deallocated and sdp->sd_jdesc is NULL. Commit 35264909e9d1 ("gfs2: Fix NULL pointer dereference in gfs2_log_flush") added a check for that to gfs2_log_flush() itself, but it missed the sdp->sd_jdesc dereference in gfs2_log_release(). Fix that. Added Reference https://git.kernel.org/stable/c/233a0945a4b1dbe3f38c30afb7d05b76c67f1193 Added Reference https://git.kernel.org/stable/c/2fc4c868c9060f424fd4a7cacb0aec5082aba4de Added Reference https://git.kernel.org/stable/c/74b4dbb946060a3233604d91859a9abd3708141d Added Reference https://git.kernel.org/stable/c/abd73229f0e886a91a16ea781ab656bd9b4d1ee8 Added Reference https://git.kernel.org/stable/c/cec55674354794eddb80b914f73a6bf9b7fc304a Added Reference https://git.kernel.org/stable/c/d8ffae016c4a78693fe1283335d0b6833a9c1366 Added Reference https://git.kernel.org/stable/c/e15f16761594e80b15776980b27c35477655a135