CVE-2026-46268
kernel: PCI/P2PDMA: Fix p2pmem_alloc_mmap() warning condition
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · June 3, 2026
Updated · June 28, 2026
Description
A flaw was found in the Linux kernel's PCI/P2PDMA subsystem. Specifically, a warning condition in the p2pmem_alloc_mmap() function can be triggered due to an incorrect page reference count assertion. This issue occurs when the CONFIG_DEBUG_VM option is enabled, leading to kernel warning messages. While primarily a debugging concern, it may indicate unexpected system behavior or instability under specific configurations.
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-911 · Improper Update of Reference Count