Heap-based buffer overflow in Linux kernel - CVE-2026-72106

Vulnerability identifier: #VU143493

CSH Severity: Low

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-72106

CWE-ID: CWE-122

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a heap-based buffer overflow in list_version_get_info in dm-ioctl when processing ioctl requests. A local user can send a specially crafted ioctl request to cause a denial of service.

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

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
kernel - update to 5.10.0-334.0.0.235
bpftool - update to 5.10.0-334.0.0.235
bpftool-debuginfo - update to 5.10.0-334.0.0.235
kernel-debuginfo - update to 5.10.0-334.0.0.235
kernel-debugsource - update to 5.10.0-334.0.0.235
kernel-devel - update to 5.10.0-334.0.0.235
kernel-headers - update to 5.10.0-334.0.0.235
kernel-source - update to 5.10.0-334.0.0.235
kernel-tools - update to 5.10.0-334.0.0.235
kernel-tools-debuginfo - update to 5.10.0-334.0.0.235
kernel-tools-devel - update to 5.10.0-334.0.0.235
perf - update to 5.10.0-334.0.0.235
perf-debuginfo - update to 5.10.0-334.0.0.235
python3-perf - update to 5.10.0-334.0.0.235
python3-perf-debuginfo - update to 5.10.0-334.0.0.235

• https://git.kernel.org/stable/c/29536a9ff146d9bbd618959857ed2e691cda1d21
• https://git.kernel.org/stable/c/76c6f845dc0c614304a6e6ee619b552f97cf24b3
• https://git.kernel.org/stable/c/d61c12573ed9768690fdcb2bc38846a1bcb01358
• https://git.kernel.org/stable/c/df50c24c6447c18886ed126d3d81cc7e155ea8b6
• https://git.kernel.org/stable/c/e0f5842c4e2a7dbefb52a2dc6711789bc6963e55

• Heap-based buffer overflow in Linux kernel md driver
• openEuler 22.03 LTS SP4 update for kernel