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]

• https://git.kernel.org/stable/c/51b56bad96fd20127034f660b337c00317c65151
• https://git.kernel.org/stable/c/789f290b2e81d42820bddcb4010ffbc2ae2ded54
• https://git.kernel.org/stable/c/7f73da0facf864fe796371ebaccacb1fee678aaf
• https://git.kernel.org/stable/c/f9b215b3e37a5047c406545de51bf8a2aeb4cd1c

Published

Oct 23, 2026

Last Modified

Oct 23, 2026

Status

Received

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-98999In the Linux kernel, the following vulnerability has been re…7.8
• CVE-2026-9900Out of bounds write in ANGLE in Google Chrome prior to 148.0…8.3
• CVE-2026-99000In the Linux kernel, the following vulnerability has been re…
• CVE-2026-99001In the Linux kernel, the following vulnerability has been re…
• CVE-2026-99002In the Linux kernel, the following vulnerability has been re…7.8
• CVE-2026-99003In the Linux kernel, the following vulnerability has been re…
• CVE-2026-99005In the Linux kernel, the following vulnerability has been re…
• CVE-2026-99006In the Linux kernel, the following vulnerability has been re…7.8
• CVE-2026-99007In the Linux kernel, the following vulnerability has been re…
• CVE-2026-99008In the Linux kernel, the following vulnerability has been re…
• CVE-2026-99009In the Linux kernel, the following vulnerability has been re…
• CVE-2026-9901Use after free in ANGLE in Google Chrome prior to 148.0.7778…7.5