Linux Kernel up to 6.12.112/6.18.56/7.2.10 imagination pvr_mmu.c pvr_mmu_op_context_create allocation of resources

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k1.23

Summaryinfo

A vulnerability classified as problematic has been found in Linux Kernel up to 6.12.112/6.18.56/7.2.10. This affects the function pvr_mmu_op_context_create of the file drivers/gpu/drm/imagination/pvr_mmu.c of the component imagination. This manipulation causes allocation of resources. This vulnerability is handled as CVE-2026-99004. It is possible to launch the attack on the local host. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.12.112/6.18.56/7.2.10. It has been declared as problematic. Affected by this vulnerability is the function pvr_mmu_op_context_create of the file drivers/gpu/drm/imagination/pvr_mmu.c of the component imagination. The manipulation with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. As an impact it is known to affect availability. The summary by CVE is:

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]

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2026-99004 since 09/25/2026. The exploitation appears to be easy. Attacking locally is a requirement. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 6.12.113, 6.18.57 or 7.2.11 eliminates this vulnerability. Applying the patch 51b56bad96fd20127034f660b337c00317c65151/f9b215b3e37a5047c406545de51bf8a2aeb4cd1c/7f73da0facf864fe796371ebaccacb1fee678aaf/789f290b2e81d42820bddcb4010ffbc2ae2ded54 is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Allocation of resources
CWE: CWE-770 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.12.113/6.18.57/7.2.11
Patch: 51b56bad96fd20127034f660b337c00317c65151/f9b215b3e37a5047c406545de51bf8a2aeb4cd1c/7f73da0facf864fe796371ebaccacb1fee678aaf/789f290b2e81d42820bddcb4010ffbc2ae2ded54

Timelineinfo

09/25/2026 CVE reserved
10/23/2026 +28 days Advisory disclosed
10/23/2026 +0 days VulDB entry created
10/23/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-99004 (🔒)
GCVE (CVE): GCVE-0-2026-99004
GCVE (VulDB): GCVE-100-425851

Entryinfo

Created: 10/23/2026 15:41
Changes: 10/23/2026 15:41 (60)
Complete: 🔍
Cache ID: 216::103

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