SB2026102402 - Division by zero in Linux kernel drm xe driver

Description

This security bulletin contains information about 1 vulnerability.

1) Division by zero (CVE-ID: CVE-2026-98919)

CWE-ID: CWE-369 - Divide By Zero

CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/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 division by zero and integer arithmetic errors in the Linux kernel Xe graphics driver's adjust_idledly() function when calculating hardware idle delays during initialization. A local user can potentially trigger a kernel panic if able to initiate the affected initialization path with an unrecognized crystal clock, which leaves the clock-derived divisor at zero.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/2bcbfc5e7bfa9cc76818c54db698da5bdc13d9ff
• https://git.kernel.org/stable/c/531d4cd03118224022dc21ae25af052ce2a9e267
• https://git.kernel.org/stable/c/90f467577ebc28c5bc4ba2f0f1b83a4419fb0740