SB2026102454 - NULL pointer dereference in Linux kernel engine device driver

Description

This security bulletin contains information about 1 vulnerability.

1) NULL pointer dereference (CVE-ID: CVE-2026-98875)

CWE-ID: CWE-476 - NULL Pointer Dereference

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 potentially cause a denial of service by triggering a crash during GPU initialization.

The vulnerability exists due to a null pointer dereference in the Linux kernel Nouveau driver's GA100 initialization when booting GSP-RM. A local user can potentially trigger the affected initialization path to cause a denial of service because the booter constructor in tu102_gsp_oneinit() accesses device->sec2 even though the missing SEC2 chip-table entry leaves that pointer null.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/604d0efb17cc0dd197e089134736ac2698d5fca7
• https://git.kernel.org/stable/c/f29267ace04283e76f92a74d9a7f4fcfcb32f484
• https://git.kernel.org/stable/c/feb1ad41281aed00e8a741942e56a1cd774e8342