What is CVE-2026-52961?

CVE-2026-52961 is a medium-severity vulnerability in Linux, classified under Reachable Assertion. CVSS score: 5.5/10. Published 2026-06-24.

How severe is CVE-2026-52961?

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

Vulnerability in Linux

CVE-2026-52961

In the Linux kernel, the following vulnerability has been resolved: ceph: fix BUG_ON in __ceph_build_xattrs_blob() due to stale blob size The generic/642 test-case can reproduce the kernel crash: [40243.605254] ------------[ cut here ]-…

EPSS: 0.001 (4.1th 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 d93231a6bc8a452323d5fef16cca7107ce483a27, 6.0, 0
Linux Linux_kernel — versions 7.1

Weakness classification (CWE)

CWE-617 — Reachable Assertion

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-2026-52961?: CVE-2026-52961 is a medium-severity vulnerability in Linux, classified under Reachable Assertion. CVSS score: 5.5/10. Published 2026-06-24.
How severe is CVE-2026-52961?: Medium severity. CVSS v3 base score is 5.5 out of 10.