Improper update of reference count in Linux kernel - CVE-2026-98679

Vulnerability identifier: #VU157010

CSH Severity: Low

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

CVE-ID: CVE-2026-98679

CWE-ID: CWE-911

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local privileged user to underflow the runtime power-management usage count and trigger a kernel warning.

The vulnerability exists due to improper runtime power-management reference counting in kxcjk1013_write_event_config() in the Linux kernel's kxcjk-1013 accelerometer driver when processing repeated writes that disable events. A local privileged user can submit duplicate disable requests through the event enable attribute to drop a runtime power-management reference that was not acquired for the request, causing a usage-count underflow and a "Runtime PM usage count underflow" warning.

Linux kernel
SUSE Linux Micro
SUSE Linux Micro Extras
kernel-default
kernel-64kb
kernel-64kb-debugsource
kernel-64kb-devel
kernel-default-devel
kernel-syms
kernel-obs-build
kernel-obs-build-debugsource
kernel-default-debugsource
kernel-default-devel-debuginfo

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
kernel-default - update to 6.4.0-159998.55.1
kernel-64kb - update to 6.4.0-159998.55.1
kernel-64kb-debugsource - update to 6.4.0-159998.55.1
kernel-64kb-devel - update to 6.4.0-159998.55.1
kernel-default-devel - update to 6.4.0-159998.55.1
kernel-syms - update to 6.4.0-159998.55.1
kernel-obs-build - update to 6.4.0-159998.55.1
kernel-obs-build-debugsource - update to 6.4.0-159998.55.1
kernel-default-debugsource - update to 6.4.0-159998.55.1
kernel-default-devel-debuginfo - update to 6.4.0-159998.55.1

• https://git.kernel.org/stable/c/137c35cff4d4d69f73cbfc0bf7870bf379a7a364
• https://git.kernel.org/stable/c/3365209e758c845a197211645731f0e393a86012
• https://git.kernel.org/stable/c/aa94a37b5a3e560c277dac6f9e5d0d75549a6583
• https://git.kernel.org/stable/c/ad690c0c1b9131725619e352cb7c970488cbf436
• https://git.kernel.org/stable/c/dd30c10ff60d2b30386c23bb7c61cc97f2385c97

• Improper update of reference count in Linux kernel iio accel driver
• SUSE update for the Linux Kernel