SB2026102298 - NULL pointer dereference in Linux kernel drm imagination driver

Description

This security bulletin contains information about 1 vulnerability.

1) NULL pointer dereference (CVE-ID: CVE-2026-98522)

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 cause a denial of service by triggering a kernel NULL pointer dereference.

The vulnerability exists due to incorrect propagation of mapping errors in the Linux kernel Imagination GPU driver's pvr_mmu_map_sgl() function when handling GPU memory mapping failures. A local user can trigger a mapping operation that fails to cause pvr_mmu_map() to continue processing instead of returning an error, leading to a NULL pointer dereference and kernel crash.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/13c7ae1d92ceea18d55612fa9431ca5ac77025f5
• https://git.kernel.org/stable/c/7b824c293a6b56de8285a97984c507cba56bc4c4
• https://git.kernel.org/stable/c/afe5b4d66d45b278ecd0e3d6889fb208ce2e5339
• https://git.kernel.org/stable/c/d30ea2747164992f5e720f6f53695d422bdc0346