Use-after-free in Linux kernel - CVE-2026-90116

Vulnerability identifier: #VU151371

CSH Severity: Low

CVSS v4: 0 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-90116

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to trigger a use-after-free.

The vulnerability exists due to improper synchronization in the MTPAV driver's output timer teardown handling when an output timer callback runs during card teardown. A local user can cause output timer activity to overlap with card teardown to trigger a use-after-free.

Linux kernel
Debian Linux
openEuler
Ubuntu
linux (Ubuntu package)
linux-oracle (Ubuntu package)
linux-aws (Ubuntu package)
linux-gcp (Ubuntu package)
linux-ibm (Ubuntu package)
linux-hwe-7.0 (Ubuntu package)
linux-oem-7.0 (Ubuntu package)
kernel-debuginfo
python3-perf-debuginfo
python3-perf
perf-debuginfo
perf
kernel-tools-devel
kernel-tools-debuginfo
kernel-tools
kernel-source
kernel-headers
kernel-devel
kernel-debugsource
bpftool-debuginfo
bpftool
kernel
linux (Debian package)

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
linux (Ubuntu package) - update to 7.0.0-42.42
linux-oracle (Ubuntu package) - update to 7.0.0-1015.16
linux-aws (Ubuntu package) - update to 7.0.0-1016.17
linux-gcp (Ubuntu package) - update to 7.0.0-1016.18
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
kernel-debuginfo - update to 5.10.0-340.0.0.241
python3-perf-debuginfo - update to 5.10.0-340.0.0.241
python3-perf - update to 5.10.0-340.0.0.241
perf-debuginfo - update to 5.10.0-340.0.0.241
perf - update to 5.10.0-340.0.0.241
kernel-tools-devel - update to 5.10.0-340.0.0.241
kernel-tools-debuginfo - update to 5.10.0-340.0.0.241
kernel-tools - update to 5.10.0-340.0.0.241
kernel-source - update to 5.10.0-340.0.0.241
kernel-headers - update to 5.10.0-340.0.0.241
kernel-devel - update to 5.10.0-340.0.0.241
kernel-debugsource - update to 5.10.0-340.0.0.241
bpftool-debuginfo - update to 5.10.0-340.0.0.241
bpftool - update to 5.10.0-340.0.0.241
kernel - update to 5.10.0-340.0.0.241
linux (Debian package) - update to 6.12.115-2

• https://git.kernel.org/stable/c/1e16e82581521a2fe20eda29bdc9e75286f7c950
• https://git.kernel.org/stable/c/392c985c6b03dfdf4904c0d464f18735ca3c4df8
• https://git.kernel.org/stable/c/c73cb5b7c159246dd572277c668851a56e516019

• Use-after-free in Linux kernel drivers
• Debian update for linux
• Ubuntu update for linux-oem-7.0
• Ubuntu update for linux, linux-aws, linux-gcp and more
• openEuler 22.03 LTS SP4 update for kernel