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

Published · last modified .

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.

EPSS exploit prediction

EPSS: 0.002 (10.7th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 10.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2023-53626: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

  • Linux — versions 8dac5a63cf79707b547ea3d425fead5f4482198f, 0c440f14558bfacd22c6935ae1fd4b2a09e96b5d, c50fc503ee1b97f12c98e26afc39fdaebebcf04f
  • Linux Kernel — versions 5.4.237, 5.10.175, 5.15.103

Weakness classification (CWE)

References

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.