CVE-2026-97923
kernel: tracing: Free histogram the var ref when its initialization fails
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 25, 2026
Updated · September 30, 2026
Description
A flaw was found in the Linux kernel's tracing subsystem. When initialization of a histogram variable reference fails during trace event configuration, the allocated memory is not properly released. A local user with administrative or tracing privileges can exploit this vulnerability by repeatedly triggering failed setup operations, resulting in a memory leak that can cause a Denial of Service (DoS) through system resource exhaustion.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-772 · Missing Release of Resource after Effective Lifetime