Missing Release of Resource after Effective Lifetime in Linux kernel - CVE-2026-45880
Published: May 28, 2026
Vulnerability identifier: #VU132613
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-45880
CWE-ID: CWE-772
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 improper release of a resource in p2pmem_alloc_mmap() when vm_insert_page() fails. A local user can trigger a vm_insert_page() failure during mmap handling to cause a denial of service.
The issue can cause memunmap_pages() to hang indefinitely when the PCI device is removed.
How to mitigate CVE-2026-45880
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/51b7181cfbedf289ce794b6d97a1c596c309ec38
- https://git.kernel.org/stable/c/6220694c52a5a04102b48109e4f24e958b559bd3
- https://git.kernel.org/stable/c/a1f4dc72efc3204db95d052058d785cad7ce755f
- https://git.kernel.org/stable/c/baa42b756d183a59572f3890981a3d32b8d05d40
- https://git.kernel.org/stable/c/e19cce88ec4c4877f4ff2469099b9cf23cc3e93e