What is CVE-2026-45884?

CVE-2026-45884 is a medium-severity vulnerability in Linux, classified under Integer Underflow. CVSS score: 5.5/10. Published 2026-05-27.

How severe is CVE-2026-45884?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Integer overflow in Linux

CVE-2026-45884

In the Linux kernel, the following vulnerability has been resolved: apparmor: avoid per-cpu hold underflow in aa_get_buffer When aa_get_buffer() pulls from the per-cpu list it unconditionally decrements cache->hold. If hold reaches 0 whi…

EPSS: 0.002 (5.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Linux — versions ea9bae12d02819556db63348db8bd8441eb316f2, 6.7, 0
Linux Linux_kernel

Weakness classification (CWE)

CWE-191 — Integer Underflow

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2026-45884?: CVE-2026-45884 is a medium-severity vulnerability in Linux, classified under Integer Underflow. CVSS score: 5.5/10. Published 2026-05-27.
How severe is CVE-2026-45884?: Medium severity. CVSS v3 base score is 5.5 out of 10.