SB2026080750 - Race condition in Linux kernel x86 intel driver

Description

This security bulletin contains information about 1 vulnerability.

1) Race condition (CVE-ID: CVE-2026-64603)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 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]

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

The vulnerability exists due to a race condition in the intel-hid ACPI notify_handler() when handling concurrent tablet-mode events on multiple CPU cores. A local user can trigger concurrent notify events to cause a denial of service.

The issue affects convertible and detachable systems matched by DMI chassis types 31 and 32 where the SW_TABLET_MODE input device is registered lazily on the first tablet-mode event.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/86df6499dfd232fbc1c82c0d6eb9322ca67b8cd0
• https://git.kernel.org/stable/c/a6402808e552e44e9c26a9fe8395ac11703d5800
• https://git.kernel.org/stable/c/c085d82613d5618814b84406c8b2d64f1bc305e7
• https://git.kernel.org/stable/c/eace3b3e729d5ba11794d69acfafb58a7950217c