What is CVE-2026-53265?

CVE-2026-53265 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2026-06-25.

How severe is CVE-2026-53265?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Linux

CVE-2026-53265

In the Linux kernel, the following vulnerability has been resolved: dm cache policy smq: check allocation under invalidate lock commit 2d1f7b65f5de ("dm cache policy smq: fix missing locks in invalidating cache blocks") added mq->lock ar…

EPSS: 0.001 (2.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Linux — versions 4991b5a08751e2e82488fb93ae08849b6aea10d9, 1b2bec4a7dcf5f00b7a1cbeeec8997841d783513, 9a5fdfb9e57ec3a8ad2b8fce5e5ffa42d53b130e
Linux Linux_kernel — versions 5.10.258, 5.15.209, 6.1.175

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)
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-2026-53265?: CVE-2026-53265 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2026-06-25.
How severe is CVE-2026-53265?: High severity. CVSS v3 base score is 7.8 out of 10.