SB2026050995 - Resource exhaustion in Linux kernel mm
Published: May 9, 2026
Security Bulletin ID
SB2026050995
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) Resource exhaustion (CVE-ID: CVE-2026-43292)
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource management in kasan_release_vmalloc_node when freeing KASAN shadow pages during vmalloc cleanup. A local user can trigger processing of a large purge list to cause a denial of service.
The issue occurs when CONFIG_PAGE_OWNER is enabled, and processing many vmap_area entries without yielding can lead to prolonged RCU stalls and potential OOM conditions.
Remediation
Install update from vendor's website.