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)

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 51eeef1949c11d3dcb5f422a5d9b3f09ebe8a1bc
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 2f390b4c83011452753fd84972f657d2b00a952b
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < ba7b6444097a73ccd3d3ac9e2be4ebb73d226460
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 9743f60013273987abf415dc47474683d22aaee9
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < a2f895f3c852063258d62e9f74b081de07ca95df
0 affected < 6.6.148
0 affected < 6.12.101
0 affected < 6.18.42
0 affected < 7.1.6
Linux Linux affected
Version Status Constraints
6.6.148 unaffected ≤ 6.6.*
6.12.101 unaffected ≤ 6.12.*
6.18.42 unaffected ≤ 6.18.*
7.1.6 unaffected ≤ 7.1.*
7.2-rc4 unaffected ≤ *

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References
Link Providers
https://git.kernel.org/stable/c/2f390b4c83011452753fd84972f657d2b00a952b cve-icon
https://git.kernel.org/stable/c/51eeef1949c11d3dcb5f422a5d9b3f09ebe8a1bc cve-icon
https://git.kernel.org/stable/c/9743f60013273987abf415dc47474683d22aaee9 cve-icon
https://git.kernel.org/stable/c/a2f895f3c852063258d62e9f74b081de07ca95df cve-icon
https://git.kernel.org/stable/c/ba7b6444097a73ccd3d3ac9e2be4ebb73d226460 cve-icon
History

Mon, 10 Aug 2026 15:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-399
CWE-835

Mon, 10 Aug 2026 12:30:00 +0000

Type Values Removed Values Added
Description 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)
Title drm/amdgpu: fix bo->pin leaking in amdgpu_bo_create_reserved
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-08-10T12:00:59.074Z

Reserved: 2026-07-30T09:28:09.376Z

Link: CVE-2026-68234

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

Updated: 2026-08-10T15:00:03Z

Weaknesses