Improper control of a resource through its lifetime in Linux kernel - CVE-2026-80945

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

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.

Linux kernel
Debian Linux
Ubuntu
linux-nvidia-tegra (Ubuntu package)
linux (Ubuntu package)
linux-aws (Ubuntu package)
linux-gcp (Ubuntu package)
linux-oracle (Ubuntu package)
linux-ibm (Ubuntu package)
linux-hwe-7.0 (Ubuntu package)
linux-oem-7.0 (Ubuntu package)
linux (Debian package)

Install security update from vendor's repository.

linux-nvidia-tegra (Ubuntu package) - update to 6.8.0-1038.42
linux (Ubuntu package) - update to 7.0.0-42.42
linux-aws (Ubuntu package) - update to 7.0.0-1016.17
linux-gcp (Ubuntu package) - update to 7.0.0-1016.18
linux-oracle (Ubuntu package) - update to 7.0.0-1015.16
linux-ibm (Ubuntu package) - update to 7.0.0-1017.17
linux-hwe-7.0 (Ubuntu package) - update to 7.0.0-42.42~24.04.1
linux-oem-7.0 (Ubuntu package) - update to 7.0.0-1017.17
linux (Debian package) - update to 6.12.111-1

• https://git.kernel.org/stable/c/94a25930477113730372e0fa2985da4c5ac95c9a
• https://git.kernel.org/stable/c/fc933a4a419ba8a75da28666a018602c44846953
• https://git.kernel.org/stable/c/fcd86180ef78b0e41763faef7c6d2de7dfb50c1a

• Improper control of a resource through its lifetime in Linux kernel intel iaa driver
• Debian update for linux
• Ubuntu update for linux-oem-7.0
• Ubuntu update for linux, linux-aws, linux-gcp and more
• Ubuntu update for linux-nvidia-tegra