Improper control of a resource through its lifetime in Linux kernel - CVE-2026-80945
Published: September 13, 2026
Vulnerability identifier: #VU149443
CSH Severity: Low
CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-80945
CWE-ID: CWE-664
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to corrupt decompression results.
The vulnerability exists due to improper DMA mapping lifecycle management in the Intel IAA decompression fallback when processing a software fallback after a hardware analytics error. A local user can trigger the software fallback before the destination buffer is unmapped to corrupt decompression results.
Corruption occurs when SWIOTLB is active and a stale bounce buffer is copied during DMA unmapping.
Affected software
Linux kernel
How to mitigate CVE-2026-80945
Install security update from vendor's repository.