CVE-2026-53048: gfs2: prevent NULL pointer dereference during unmount
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, gfs2logflush() can be called when sdp->sdjdesc has already been deallocated and sdp->sdjdesc is NULL. Commit 35264909e9d1 ("gfs2: Fix NULL pointer dereference in gfs2logflush") added a check for that to gfs2logflush() itself, but it missed the sdp->sdjdesc dereference in gfs2logrelease(). Fix that.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Linux kernel (gfs2)to a version that resolves this vulnerability.Patch 35264909e9d1
Event History
Frequently Asked Questions
What is the severity of CVE-2026-53048?
The severity of CVE-2026-53048 is rated at 15.
How do I fix CVE-2026-53048?
To fix CVE-2026-53048, ensure that you update your Linux kernel to incorporate the patch that prevents the NULL pointer dereference during unmount.
What software is affected by CVE-2026-53048?
CVE-2026-53048 affects the Linux gfs2 file system within the Linux kernel.
What type of vulnerability is CVE-2026-53048?
CVE-2026-53048 is categorized as a Null Pointer Dereference vulnerability.
When was CVE-2026-53048 published?
CVE-2026-53048 was published on June 24, 2026.