What is CVE-2026-52956?

CVE-2026-52956 is a high-severity vulnerability in Linux, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-06-24.

How severe is CVE-2026-52956?

High severity. CVSS v3 base score is 7.5 out of 10.

Out-of-bounds Read in Linux

CVE-2026-52956

In the Linux kernel, the following vulnerability has been resolved: libceph: Fix potential out-of-bounds access in __ceph_x_decrypt() In __ceph_x_decrypt(), a part of the buffer p is interpreted as a ceph_x_encrypt_header, and the magic…

Vulnerability class: Buffer Overflow

EPSS: 0.004 (28.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Linux — versions 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, 2982b9c92a66604ffb9fb2db54cf735133d1ef56, e15fd0a11db00fc7f470a9fc804657ec3f6d04a5
Linux Linux_kernel — versions 7.1

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

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

Frequently asked questions

What is CVE-2026-52956?: CVE-2026-52956 is a high-severity vulnerability in Linux, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-06-24.
How severe is CVE-2026-52956?: High severity. CVSS v3 base score is 7.5 out of 10.