Out-of-bounds write in Linux kernel - CVE-2026-23377

Vulnerability identifier: #VU124462

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-2026-23377

CWE-ID: CWE-787

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 improper input validation in the ice driver's XDP RxQ configuration when handling XDP buffer size parameters. A local user can trigger a negative tailroom condition by using the XDP_ADJUST_TAIL_GROW_MULTI_BUFF xskxceiver test with a large packet size and offset to cause a kernel panic.

The issue arises specifically from incorrect assumptions about buffer size in the frag_size field, leading to memory corruption during XDP processing.

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

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
python3-perf-debuginfo - addressed in versions 6.6.0-145.1.17.155, 6.6.0-145.3.17.150
python3-perf - addressed in versions 6.6.0-145.1.17.155, 6.6.0-145.3.17.150
perf-debuginfo - addressed in versions 6.6.0-145.1.17.155, 6.6.0-145.3.17.150
perf - addressed in versions 6.6.0-145.1.17.155, 6.6.0-145.3.17.150
kernel-tools-devel - addressed in versions 6.6.0-145.1.17.155, 6.6.0-145.3.17.150
kernel-tools-debuginfo - addressed in versions 6.6.0-145.1.17.155, 6.6.0-145.3.17.150
kernel-tools - addressed in versions 6.6.0-145.1.17.155, 6.6.0-145.3.17.150
kernel-source - addressed in versions 6.6.0-145.1.17.155, 6.6.0-145.3.17.150
kernel-headers - addressed in versions 6.6.0-145.1.17.155, 6.6.0-145.3.17.150
kernel-devel - addressed in versions 6.6.0-145.1.17.155, 6.6.0-145.3.17.150
kernel-debugsource - addressed in versions 6.6.0-145.1.17.155, 6.6.0-145.3.17.150
kernel-debuginfo - addressed in versions 6.6.0-145.1.17.155, 6.6.0-145.3.17.150
bpftool-debuginfo - addressed in versions 6.6.0-145.1.17.155, 6.6.0-145.3.17.150
bpftool - addressed in versions 6.6.0-145.1.17.155, 6.6.0-145.3.17.150
kernel - addressed in versions 6.6.0-145.1.17.155, 6.6.0-145.3.17.150
kernel-extra-modules - update to 6.6.0-145.3.17.150

• https://git.kernel.org/stable/c/b0f05100e8795aadd1c0606bae9caefbda070d63
• https://git.kernel.org/stable/c/e142dc4ef0f451b7ef99d09aaa84e9389af629d7

• Out-of-bounds write in Linux kernel intel ice driver
• openEuler 24.03 LTS SP3 update for kernel
• openEuler 24.03 LTS SP1 update for kernel