SB20260528201 - Missing Release of Resource after Effective Lifetime in Linux kernel pci driver
Published: May 28, 2026
Security Bulletin ID
SB20260528201
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Missing Release of Resource after Effective Lifetime (CVE-ID: CVE-2026-45880)
CWE-ID: CWE-772 - Missing Release of Resource after Effective Lifetime
CVSSv4: 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
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.
Remediation
Install update from vendor's website.
References
- 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