SB20260928197 - Memory leak in Linux kernel iommu amd driver
Published: September 28, 2026
Security Bulletin ID
SB20260928197
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-2026-98003)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: 4.8 [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]
The vulnerability allows a local user to exhaust memory resources.
The vulnerability exists due to a memory leak in the AMD IOMMU guest-address log buffer initialization when reinitializing GA log buffers during system resume. A local user can trigger repeated system resumes to exhaust memory resources.
The allocation occurs from a syscore resume callback while interrupts are disabled and non-boot CPUs are offline.
Remediation
Install update from vendor's website.