Use-after-free in Linux kernel - CVE-2026-80737

Vulnerability identifier: #VU146927

CSH Severity: Low

CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-80737

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to cause memory corruption.

The vulnerability exists due to a use-after-free in the AMBA PL011 serial driver's DMA shutdown handling when DMA activity is being terminated. A local user can trigger DMA shutdown while TX callbacks or RX polling remain active to cause memory corruption.

Linux kernel
openEuler
kernel
python3-perf-debuginfo
python3-perf
python2-perf-debuginfo
python2-perf
perf-debuginfo
perf
kernel-tools-devel
kernel-tools-debuginfo
kernel-tools
kernel-source
kernel-devel
kernel-debugsource
kernel-debuginfo
bpftool-debuginfo
bpftool
kernel-headers

Install security update from vendor's repository.

kernel - addressed in versions 4.19.90-2609.3.0.0391, 5.10.0-334.0.0.235
python3-perf-debuginfo - addressed in versions 4.19.90-2609.3.0.0391, 5.10.0-334.0.0.235
python3-perf - addressed in versions 4.19.90-2609.3.0.0391, 5.10.0-334.0.0.235
python2-perf-debuginfo - update to 4.19.90-2609.3.0.0391
python2-perf - update to 4.19.90-2609.3.0.0391
perf-debuginfo - addressed in versions 4.19.90-2609.3.0.0391, 5.10.0-334.0.0.235
perf - addressed in versions 4.19.90-2609.3.0.0391, 5.10.0-334.0.0.235
kernel-tools-devel - addressed in versions 4.19.90-2609.3.0.0391, 5.10.0-334.0.0.235
kernel-tools-debuginfo - addressed in versions 4.19.90-2609.3.0.0391, 5.10.0-334.0.0.235
kernel-tools - addressed in versions 4.19.90-2609.3.0.0391, 5.10.0-334.0.0.235
kernel-source - addressed in versions 4.19.90-2609.3.0.0391, 5.10.0-334.0.0.235
kernel-devel - addressed in versions 4.19.90-2609.3.0.0391, 5.10.0-334.0.0.235
kernel-debugsource - addressed in versions 4.19.90-2609.3.0.0391, 5.10.0-334.0.0.235
kernel-debuginfo - addressed in versions 4.19.90-2609.3.0.0391, 5.10.0-334.0.0.235
bpftool-debuginfo - addressed in versions 4.19.90-2609.3.0.0391, 5.10.0-334.0.0.235
bpftool - addressed in versions 4.19.90-2609.3.0.0391, 5.10.0-334.0.0.235
kernel-headers - update to 5.10.0-334.0.0.235

• https://git.kernel.org/stable/c/440915499231e9db1c361aa45bb702e8fd3b4a32
• https://git.kernel.org/stable/c/44bd0ecc3444882d08ecfbc2b2418d2f463d3186
• https://git.kernel.org/stable/c/5974cb66681eac367107b05924744d7e3b49d41c
• https://git.kernel.org/stable/c/9f6989e477f03a4721d34bb4b09b17accd40283e
• https://git.kernel.org/stable/c/a38fae9d212e2d3ed5e9ec0ef773f8c0a27fb76e
• https://git.kernel.org/stable/c/c8c8e895f65fbf71ea6224e27cf8dab91b776e0d
• https://git.kernel.org/stable/c/f70c9d4fba46463a5b1c7b3ee9ee3b40c90dac03
• https://git.kernel.org/stable/c/fdfb46c387241b4eddd36d746793764413285913

• Use-after-free in Linux kernel tty serial driver
• openEuler 22.03 LTS SP4 update for kernel
• openEuler 20.03 LTS SP4 update for kernel