What is CVE-2025-39924?

CVE-2025-39924 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2025-10-01.

How severe is CVE-2025-39924?

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

Vulnerability in Linux

CVE-2025-39924

In the Linux kernel, the following vulnerability has been resolved: erofs: fix invalid algorithm for encoded extents The current algorithm sanity checks do not properly apply to new encoded extents. Unify the algorithm check with Z_EROFS_COMPRESSION(_RUNTIME)_MAX and ensure consistency with sbi->available_compr_algs.

EPSS: 0.001 (2.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

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

Affected products

Linux — versions 1d191b4ca51d73699cb127386b95ac152af2b930, 6.15, 0
Linux Linux_kernel — versions 6.17

References

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

Frequently asked questions

What is CVE-2025-39924?: CVE-2025-39924 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2025-10-01.
How severe is CVE-2025-39924?: High severity. CVSS v3 base score is 7.8 out of 10.