In the Linux kernel, the following vulnerability has been resolved: drm/imagination: Propagate map failures correctly from pvr_mmu_map_sgl() Map… (CVE-2026-98522)

The Linux kernel's drm/imagination component had a flaw in error handling where map failures from the pvr_mmu_map_sgl() function were not correctly propagated to the pvr_mmu_map() function. As a result, pvr_mmu_map() would proceed despite an underlying failure, which could cause a NULL pointer dereference and kernel crash. The fix involves returning the correct error code from pvr_mmu_map_sgl() to prevent continuation on failure. The crash call stack indicates a kernel oops due to a NULL pointer dereference in the powervr module.

This vulnerability can cause a kernel NULL pointer dereference leading to a system crash (kernel oops). It affects system stability and could be triggered by malformed or unexpected inputs to the drm/imagination driver interfaces. There is no indication of privilege escalation or data corruption beyond the crash.

A fix has been implemented in the Linux kernel to correctly propagate map failures by returning proper error codes from pvr_mmu_map_sgl(). Users should update to a kernel version that includes this fix once available. Patch status is not explicitly confirmed in the provided data; users should consult the official Linux kernel advisories or vendor updates for the fixed version and apply the update accordingly.