CVE Catalog

CVE-2026-45893

HighCVSS 7.1
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.13%

3th percentile - higher than 3% of all known CVEs

Summary

In the Linux kernel, a vulnerability was found in the AppArmor module that may cause improper memory access when creating tables from unaligned data originating from userspace. The patch optimizes the copying process by avoiding unaligned memory accesses, fixing a potential bug.

Risk Assessment

Unaligned memory access can lead to system crashes or unpredictable kernel behavior, posing a risk to system stability and security.

Recommendation

It is recommended to immediately update the Linux kernel to a version containing the fix for CVE-2026-45893 to eliminate the risk of unaligned memory access in the AppArmor module.

Related vulnerabilities

Original NVD description (English source)

In the Linux kernel, the following vulnerability has been resolved: apparmor: Fix & Optimize table creation from possibly unaligned memory Source blob may come from userspace and might be unaligned. Try to optize the copying process by avoiding unaligned memory accesses. - Added Fixes tag - Added "Fix &" to description as this doesn't just optimize but fixes a potential unaligned memory access [jj: remove duplicate word "convert" in comment trigger checkpatch warning]

Vulnerability data from NVD (NIST) · CISA KEV · EPSS