{"id":"CVE-2026-68234","title":"drm/amdgpu: fix bo->pin leaking in amdgpu_bo_create_reserved","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: fix bo->pin leaking in amdgpu_bo_create_reserved\n\namdgpu_bo_create_reserved() only allocates a new BO when\n*bo_ptr (struct amdgpu_bo **bo_ptr as input param…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 53766e5adac75872e9d413cdbfd0e47ae40701f9 < 7aea619d9f186dcf0f1289879e9edb69d2b56639","Linux >= 53766e5adac75872e9d413cdbfd0e47ae40701f9 < b572d0814c1366701ca704286589fab025802566","Linux >= 53766e5adac75872e9d413cdbfd0e47ae40701f9 < e06e0885725a16304b7723aeb478a78cca9dc96a","Linux >= 53766e5adac75872e9d413cdbfd0e47ae40701f9 < 51eeef1949c11d3dcb5f422a5d9b3f09ebe8a1bc","Linux >= 53766e5adac75872e9d413cdbfd0e47ae40701f9 < 2f390b4c83011452753fd84972f657d2b00a952b","Linux >= 53766e5adac75872e9d413cdbfd0e47ae40701f9 < ba7b6444097a73ccd3d3ac9e2be4ebb73d226460","Linux >= 53766e5adac75872e9d413cdbfd0e47ae40701f9 < 9743f60013273987abf415dc47474683d22aaee9","Linux >= 53766e5adac75872e9d413cdbfd0e47ae40701f9 < a2f895f3c852063258d62e9f74b081de07ca95df","Linux 4.14"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-06T16:45:23.989431Z"},"published":"2026-08-10","updated":"2026-11-06","sourceUpdated":"2026-11-06T16:55:10.311Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-68234","references":[{"url":"https://git.kernel.org/stable/c/7aea619d9f186dcf0f1289879e9edb69d2b56639"},{"url":"https://git.kernel.org/stable/c/b572d0814c1366701ca704286589fab025802566"},{"url":"https://git.kernel.org/stable/c/e06e0885725a16304b7723aeb478a78cca9dc96a"},{"url":"https://git.kernel.org/stable/c/51eeef1949c11d3dcb5f422a5d9b3f09ebe8a1bc"},{"url":"https://git.kernel.org/stable/c/2f390b4c83011452753fd84972f657d2b00a952b"},{"url":"https://git.kernel.org/stable/c/ba7b6444097a73ccd3d3ac9e2be4ebb73d226460"},{"url":"https://git.kernel.org/stable/c/9743f60013273987abf415dc47474683d22aaee9"},{"url":"https://git.kernel.org/stable/c/a2f895f3c852063258d62e9f74b081de07ca95df"}],"tags":["cve.org"],"epss":0.00177,"epssPercentile":0.0724,"ingestedAt":"2026-11-06T18:00:12.617Z","slug":"CVE-2026-68234","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: fix bo->pin leaking in amdgpu_bo_create_reserved\n\namdgpu_bo_create_reserved() only allocates a new BO when\n*bo_ptr (struct amdgpu_bo **bo_ptr as input parameter) is\nNULL, it simply skips creation when *bo_ptr is non-NULL.\nBut it unconditionally reserves, pins, gart allocates\nand maps the BO afterwards.\n\nWhen the same non-NULL BO pointer is passed in again,\nfor example firmware buffers that live in adev and are\nre-loaded on every resume / cp_resume / start\nunder AMDGPU_FW_LOAD_DIRECT, amdgpu_bo_pin() just increases\npin_count unconditionally, however the matching teardown only unpins\nonce, so pin_count never drops to zero, so TTM is not able\nto move, swap or evict a BO, causing BO leaks.\n\nThis commit fixes this issue by only pinning the bo\nonce at creation, and repeated calls no longer\ntake additional pin references.\n\n(cherry picked from commit 3ddc0ae76202c447b6aec61e907b852bc94671cf)\n\n## Affected\n\n- `Linux >= 53766e5adac75872e9d413cdbfd0e47ae40701f9 < 7aea619d9f186dcf0f1289879e9edb69d2b56639`\n- `Linux >= 53766e5adac75872e9d413cdbfd0e47ae40701f9 < b572d0814c1366701ca704286589fab025802566`\n- `Linux >= 53766e5adac75872e9d413cdbfd0e47ae40701f9 < e06e0885725a16304b7723aeb478a78cca9dc96a`\n- `Linux >= 53766e5adac75872e9d413cdbfd0e47ae40701f9 < 51eeef1949c11d3dcb5f422a5d9b3f09ebe8a1bc`\n- `Linux >= 53766e5adac75872e9d413cdbfd0e47ae40701f9 < 2f390b4c83011452753fd84972f657d2b00a952b`\n- `Linux >= 53766e5adac75872e9d413cdbfd0e47ae40701f9 < ba7b6444097a73ccd3d3ac9e2be4ebb73d226460`\n- `Linux >= 53766e5adac75872e9d413cdbfd0e47ae40701f9 < 9743f60013273987abf415dc47474683d22aaee9`\n- `Linux >= 53766e5adac75872e9d413cdbfd0e47ae40701f9 < a2f895f3c852063258d62e9f74b081de07ca95df`\n- `Linux 4.14`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}