CVE-2026-31453
Description
A flaw was found in the Linux kernel's XFS filesystem. This vulnerability arises when log items are accessed after their memory has been freed, specifically during certain push callbacks if the Allocation Information List (AIL) lock is released. This memory corruption can lead to a system crash, resulting in a Denial of Service (DoS).
Statement
Upstream adjusted XFS AIL push tracing to avoid dereferencing freed log items after iop_push() drops the lock. Red Hat categorizes the issue as local kernel memory safety in XFS journaling paths. Customers running XFS should plan for patched kernels from their product stream. Mitigation is limited to avoiding the driver where policy allows.
Mitigation
To mitigate this issue, prevent the xfs module from being loaded. See https://access.redhat.com/solutions/41278 for instructions.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.5 | N/A | 7.8 |
| Attack Vector | Local | N/A | Local |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | Low | N/A | Low |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | None | N/A | High |
| Integrity Impact | None | N/A | High |
| Availability Impact | High | N/A | High |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
cve.org: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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