CVE-2026-72223
kernel: nvdimm/btt: Free arena sub-allocations on discover_arenas() error path
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · August 15, 2026
Updated · August 19, 2026
Description
A flaw was found in the Linux kernel's nvdimm/btt module. This vulnerability occurs when the discover_arenas() function encounters an error, failing to properly deallocate memory. Specifically, memory allocated by sub-functions like btt_freelist_init() is not released, leading to a memory leak. This can result in system instability or denial of service over time due to 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