Not yet scoredPublished Aug 10, 2026

CVE-2026-68234drm/amdgpu: fix bo->pin leaking in amdgpu_bo_create_reserved

Updated under an hour ago (Oct 28, 2026, 7:50 AM ET)

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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)

CVSS: Not yet scored
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Aug 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	53766e5adac75872e9d413cdbfd0e47ae40701f9 builds before 7aea619d9f186dcf0f1289879e9edb69d2b56639; from 53766e5adac75872e9d413cdbfd0e47ae40701f9 before b572d0814c1366701ca704286589fab025802566; from 53766e5adac75872e9d413cdbfd0e47ae40701f9 before e06e0885725a16304b7723aeb478a78cca9dc96a; 53766e5adac75872e9d413cdbfd0e47ae40701f9 builds before 51eeef1949c11d3dcb5f422a5d9b3f09ebe8a1bc; 53766e5adac75872e9d413cdbfd0e47ae40701f9 builds before 2f390b4c83011452753fd84972f657d2b00a952b; from 53766e5adac75872e9d413cdbfd0e47ae40701f9 before ba7b6444097a73ccd3d3ac9e2be4ebb73d226460; 53766e5adac75872e9d413cdbfd0e47ae40701f9 builds before 9743f60013273987abf415dc47474683d22aaee9; from 53766e5adac75872e9d413cdbfd0e47ae40701f9 before a2f895f3c852063258d62e9f74b081de07ca95df	CNA record

References

References

https://git.kernel.org/stable/c/7aea619d9f186dcf0f1289879e9edb69d2b56639
https://git.kernel.org/stable/c/b572d0814c1366701ca704286589fab025802566
https://git.kernel.org/stable/c/e06e0885725a16304b7723aeb478a78cca9dc96a
https://git.kernel.org/stable/c/51eeef1949c11d3dcb5f422a5d9b3f09ebe8a1bc
https://git.kernel.org/stable/c/2f390b4c83011452753fd84972f657d2b00a952b
https://git.kernel.org/stable/c/ba7b6444097a73ccd3d3ac9e2be4ebb73d226460
https://git.kernel.org/stable/c/9743f60013273987abf415dc47474683d22aaee9
https://git.kernel.org/stable/c/a2f895f3c852063258d62e9f74b081de07ca95df

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.