CVE-2026-64182
kernel: drivers/base/memory: fix memory block reference leak in poison accounting
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · July 19, 2026
Updated · October 29, 2026
Description
A flaw was found in the Linux kernel's memory management subsystem. Specifically, the functions responsible for tracking poisoned memory blocks (memblk_nr_poison_inc() and memblk_nr_poison_sub()) fail to properly release a device reference after looking up a memory block. This oversight leads to a continuous leak of device references, which could eventually exhaust system resources and result in a denial of service (DoS) condition.
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