CVE intelligence

CVE-2026-99004

Vulnerability intelligence

Published Oct 23, 2026Sources checked Nov 10, 2026

N/ACVSS not listedScore unavailable

What this means

Review the available evidence

CVE-2026-99004. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

CISA KEVNot listedBased on the latest collected catalog

EPSS0.2%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-99004?

In the Linux kernel, the following vulnerability has been resolved:

drm/imagination: Size page table preallocation by device address

Commit 0a8224058a58 ("drm/imagination: Fix page count for page table for map() interface") passed the device address to pvr_mmu_op_context_create(), but the preallocation is still sized from device_addr + sgt_offset with an exclusive end. The offset into the object's pages has no place in a device-virtual range, and the exclusive end allocates one table too many when the range ends on a table boundary.

Count the tables from device_addr and the inclusive end of the range.

The new calculation does not take page table indices into account. This fixes another issue with the previous implementation, where the difference between start and end indices could underflow when a mapping crossed a page table boundary.

This would lead to the driver preallocating a huge number of MMU pages, exhausting system memory and triggering an out of memory panic.

[Alessio: add paragraph to point out OOM bug being fixed, cc stable]

Source: NVD