SB2026061018 - Memory leak in Linux kernel mm
Published: June 10, 2026
Security Bulletin ID
SB2026061018
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Memory leak (CVE-ID: CVE-2026-46318)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: 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
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a memory leak in hugetlbfs mmap handling when processing a hugetlb mapping request. A local user can trigger a failed allocation after mmap preparation to cause a denial of service.
The issue occurs because hugetlb VMA lock allocation may leak if allocation fails after mmap preparation is invoked.
Remediation
Install update from vendor's website.