SB2026052857 - Out-of-bounds read in Linux kernel damon
Published: May 28, 2026
Security Bulletin ID
SB2026052857
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) Out-of-bounds read (CVE-ID: CVE-2026-46020)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local privileged user to cause a denial of service.
The vulnerability exists due to out-of-bounds memory access in mm/damon/core when processing DAMON_SYSFS quota goal node identifiers for node_mem_used_bp and node_mem_free_bp. A local privileged user can set an arbitrary node id value via DAMON_SYSFS to cause a denial of service.
The issue can be triggered using the DAMON user-space tool.
Remediation
Install update from vendor's website.