What is CVE-2025-21693?

CVE-2025-21693 is a high-severity vulnerability in Linux, classified under Use After Free. CVSS score: 7.8/10. Published 2025-02-10.

How severe is CVE-2025-21693?

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

Use After Free in Linux

CVE-2025-21693

In the Linux kernel, the following vulnerability has been resolved: mm: zswap: properly synchronize freeing resources during CPU hotunplug In zswap_compress() and zswap_decompress(), the per-CPU acomp_ctx of the current CPU at the beginn…

Vulnerability class: Use-After-Free

EPSS: 0.002 (9.0th 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 1ec3b5fe6eec782f4e5e0a80e4ce1909ffd5d161, 5.11, 0
Linux Linux_kernel — versions 6.13

Weakness classification (CWE)

CWE-416 — Use After Free

References

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

Frequently asked questions

What is CVE-2025-21693?: CVE-2025-21693 is a high-severity vulnerability in Linux, classified under Use After Free. CVSS score: 7.8/10. Published 2025-02-10.
How severe is CVE-2025-21693?: High severity. CVSS v3 base score is 7.8 out of 10.