What is CVE-2023-53997?

CVE-2023-53997 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2025-12-24.

How severe is CVE-2023-53997?

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

Vulnerability in Linux

CVE-2023-53997

In the Linux kernel, the following vulnerability has been resolved: thermal: of: fix double-free on unregistration Since commit 3d439b1a2ad3 ("thermal/core: Alloc-copy-free the thermal zone parameters structure"), thermal_zone_device_register() allocates a copy of the tzp argument and frees it when unregistering, so thermal_of_zone_register() now ends up leaking its original tzp and double-freeing the tzp copy. Fix this by locating tzp on stack instead.

EPSS: 0.002 (5.9th 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 3d439b1a2ad36c8b4ea151c8de25309d60d17407, 6.4, 0

References

Frequently asked questions

What is CVE-2023-53997?: CVE-2023-53997 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2025-12-24.
How severe is CVE-2023-53997?: High severity. CVSS v3 base score is 7.8 out of 10.