Double Free in Linux

CVE-2023-53626

In the Linux kernel, the following vulnerability has been resolved: ext4: fix possible double unlock when moving a directory

Vulnerability class: Double Free

EPSS: 0.002 (10.4th 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 8dac5a63cf79707b547ea3d425fead5f4482198f, 0c440f14558bfacd22c6935ae1fd4b2a09e96b5d, c50fc503ee1b97f12c98e26afc39fdaebebcf04f
Linux Linux_kernel — versions 5.4.237, 5.10.175, 5.15.103

Weakness classification (CWE)

CWE-415 — Double Free

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)

Frequently asked questions

What is CVE-2023-53626?: CVE-2023-53626 is a high-severity vulnerability in Linux, classified under Double Free. CVSS score: 7.8/10. Published 2025-10-07.
How severe is CVE-2023-53626?: High severity. CVSS v3 base score is 7.8 out of 10.