Out-of-bounds read in Linux kernel - CVE-2026-80765

Vulnerability identifier: #VU147160

CSH Severity: Low

CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-80765

CWE-ID: CWE-125

Exploitation vector: Local access

Exploit availability: No public exploit available

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

The vulnerability exists due to an out-of-bounds read in mousevsc_on_receive_device_info() in the Hyper-V HID driver when processing SYNTH_HID_INITIAL_DEVICE_INFO messages. A local privileged user can send a short initial device-info message with an oversized HID report descriptor length to cause a denial of service.

Exploitation requires control of the Hyper-V host or backend.

Linux kernel
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Live Patching
kgraft-patch-4_12_14-122_328-default
dlm-kmp-default
kernel-default-man
kernel-macros
kernel-devel
kernel-source
kernel-default-devel-debuginfo
kernel-default-base
kernel-default-devel
cluster-md-kmp-default
gfs2-kmp-default
ocfs2-kmp-default-debuginfo
gfs2-kmp-default-debuginfo
kernel-default
ocfs2-kmp-default
kernel-default-base-debuginfo
dlm-kmp-default-debuginfo
cluster-md-kmp-default-debuginfo
kernel-syms
kernel-default-kgraft
kernel-default-debuginfo
kernel-default-kgraft-devel
kernel-default-debugsource

Install security update from vendor's repository.

kgraft-patch-4_12_14-122_328-default - update to 1-8.5.1
dlm-kmp-default - update to 4.12.14-122.328.1
kernel-default-man - update to 4.12.14-122.328.1
kernel-macros - update to 4.12.14-122.328.1
kernel-devel - update to 4.12.14-122.328.1
kernel-source - update to 4.12.14-122.328.1
kernel-default-devel-debuginfo - update to 4.12.14-122.328.1
kernel-default-base - update to 4.12.14-122.328.1
kernel-default-devel - update to 4.12.14-122.328.1
cluster-md-kmp-default - update to 4.12.14-122.328.1
gfs2-kmp-default - update to 4.12.14-122.328.1
ocfs2-kmp-default-debuginfo - update to 4.12.14-122.328.1
gfs2-kmp-default-debuginfo - update to 4.12.14-122.328.1
kernel-default - update to 4.12.14-122.328.1
ocfs2-kmp-default - update to 4.12.14-122.328.1
kernel-default-base-debuginfo - update to 4.12.14-122.328.1
dlm-kmp-default-debuginfo - update to 4.12.14-122.328.1
cluster-md-kmp-default-debuginfo - update to 4.12.14-122.328.1
kernel-syms - update to 4.12.14-122.328.1
kernel-default-kgraft - update to 4.12.14-122.328.1
kernel-default-debuginfo - update to 4.12.14-122.328.1
kernel-default-kgraft-devel - update to 4.12.14-122.328.1
kernel-default-debugsource - update to 4.12.14-122.328.1

• https://git.kernel.org/stable/c/2529737763cb4bcfcaf397beeea2664656c865b4
• https://git.kernel.org/stable/c/334271d3812ab3197c95b4593bc6745f8d189114
• https://git.kernel.org/stable/c/390d3d9c52a710fdc9de95a537747397c0c671d1
• https://git.kernel.org/stable/c/608f8fd8c0f7b6268da43509447802955f210aac
• https://git.kernel.org/stable/c/8614c043b11cc35ffebd35542ab4da275f8f923d
• https://git.kernel.org/stable/c/934b7778aa7b7c8f6bb073d2a73ba3674885bae0
• https://git.kernel.org/stable/c/c894143c508a7e063aab9f73c9e835ab40121283
• https://git.kernel.org/stable/c/e0d5d3e45e142b7ef7525654aaa54d3e986002a6
• https://git.kernel.org/stable/c/f84d777574b748b1a488723ca7be9d87a301a872

• Out-of-bounds read in Linux kernel hid driver
• SUSE update for the Linux Kernel