Reachable assertion in Linux kernel - CVE-2026-46268
Published: June 4, 2026
Vulnerability identifier: #VU133318
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-46268
CWE-ID: CWE-617
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to an incorrect assertion condition in p2pmem_alloc_mmap() in the PCI P2PDMA subsystem when mapping allocated p2pdma pages. A local user can trigger the warning path to cause a denial of service.
The warning is reported when CONFIG_DEBUG_VM is enabled.
How to mitigate CVE-2026-46268
Install security update from vendor's repository.