Linux Kernel up to 7.2-rc3 drm-amdgpu amdgpu_bo.c amdgpu_bo_create_reserved bo_ptr allocation of resources

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.54+

Summaryinfo

A vulnerability classified as critical was found in Linux Kernel up to 6.6.147/6.12.100/6.18.41/7.1.5/7.2-rc3. Impacted is the function amdgpu_bo_create_reserved of the file drivers/gpu/drm/amd/amdgpu/amdgpu_bo.c of the component drm-amdgpu. Such manipulation of the argument bo_ptr leads to allocation of resources. This vulnerability is referenced as CVE-2026-68234. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.6.147/6.12.100/6.18.41/7.1.5/7.2-rc3 and classified as critical. Affected by this issue is the function amdgpu_bo_create_reserved of the file drivers/gpu/drm/amd/amdgpu/amdgpu_bo.c of the component drm-amdgpu. The manipulation of the argument bo_ptr with an unknown input leads to a allocation of resources vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix bo->pin leaking in amdgpu_bo_create_reserved amdgpu_bo_create_reserved() only allocates a new BO when *bo_ptr (struct amdgpu_bo **bo_ptr as input parameter) is NULL, it simply skips creation when *bo_ptr is non-NULL. But it unconditionally reserves, pins, gart allocates and maps the BO afterwards. When the same non-NULL BO pointer is passed in again, for example firmware buffers that live in adev and are re-loaded on every resume / cp_resume / start under AMDGPU_FW_LOAD_DIRECT, amdgpu_bo_pin() just increases pin_count unconditionally, however the matching teardown only unpins once, so pin_count never drops to zero, so TTM is not able to move, swap or evict a BO, causing BO leaks. This commit fixes this issue by only pinning the bo once at creation, and repeated calls no longer take additional pin references. (cherry picked from commit 3ddc0ae76202c447b6aec61e907b852bc94671cf)

The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2026-68234 since 07/30/2026. The exploitation is known to be easy. The attack may be launched remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/10/2026). This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 6.6.148, 6.12.101, 6.18.42, 7.1.6 or 7.2-rc4 eliminates this vulnerability. Applying the patch 51eeef1949c11d3dcb5f422a5d9b3f09ebe8a1bc/2f390b4c83011452753fd84972f657d2b00a952b/ba7b6444097a73ccd3d3ac9e2be4ebb73d226460/9743f60013273987abf415dc47474683d22aaee9/a2f895f3c852063258d62e9f74b081de07ca95df is able to eliminate this problem.

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Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
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: No
Local: No
Remote: Yes

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 6.6.148/6.12.101/6.18.42/7.1.6/7.2-rc4
Patch: 51eeef1949c11d3dcb5f422a5d9b3f09ebe8a1bc/2f390b4c83011452753fd84972f657d2b00a952b/ba7b6444097a73ccd3d3ac9e2be4ebb73d226460/9743f60013273987abf415dc47474683d22aaee9/a2f895f3c852063258d62e9f74b081de07ca95df

Timelineinfo

07/30/2026 CVE reserved
08/10/2026 +11 days Advisory disclosed
08/10/2026 +0 days VulDB entry created
08/10/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-68234 (🔒)
GCVE (CVE): GCVE-0-2026-68234
GCVE (VulDB): GCVE-100-387590

Entryinfo

Created: 08/10/2026 16:29
Changes: 08/10/2026 16:29 (61)
Complete: 🔍
Cache ID: 216::103

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