{"id":"CVE-2026-68234","state":"PUBLISHED","title":"drm/amdgpu: fix bo->pin leaking in amdgpu_bo_create_reserved","description":"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 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)","publishedAt":"2026-08-10T12:00:59.074Z","updatedAt":"2026-08-19T16:32:06.457Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"53766e5adac75872e9d413cdbfd0e47ae40701f9","status":"affected","lessThan":"7aea619d9f186dcf0f1289879e9edb69d2b56639","versionType":"git"},{"version":"53766e5adac75872e9d413cdbfd0e47ae40701f9","status":"affected","lessThan":"b572d0814c1366701ca704286589fab025802566","versionType":"git"},{"version":"53766e5adac75872e9d413cdbfd0e47ae40701f9","status":"affected","lessThan":"e06e0885725a16304b7723aeb478a78cca9dc96a","versionType":"git"},{"version":"53766e5adac75872e9d413cdbfd0e47ae40701f9","status":"affected","lessThan":"51eeef1949c11d3dcb5f422a5d9b3f09ebe8a1bc","versionType":"git"},{"version":"53766e5adac75872e9d413cdbfd0e47ae40701f9","status":"affected","lessThan":"2f390b4c83011452753fd84972f657d2b00a952b","versionType":"git"},{"version":"53766e5adac75872e9d413cdbfd0e47ae40701f9","status":"affected","lessThan":"ba7b6444097a73ccd3d3ac9e2be4ebb73d226460","versionType":"git"},{"version":"53766e5adac75872e9d413cdbfd0e47ae40701f9","status":"affected","lessThan":"9743f60013273987abf415dc47474683d22aaee9","versionType":"git"},{"version":"53766e5adac75872e9d413cdbfd0e47ae40701f9","status":"affected","lessThan":"a2f895f3c852063258d62e9f74b081de07ca95df","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdgpu/amdgpu_object.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.14","versionType":"semver"},{"version":"5.10.265","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.216","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.183","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.148","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.101","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.42","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.6","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdgpu/amdgpu_object.c"]}],"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"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:49.727Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/68xxx/CVE-2026-68234.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-68234","state":"PUBLISHED","datePublished":"2026-08-10T12:00:59.074Z","dateUpdated":"2026-08-19T16:32:06.457Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-30T09:28:09.376Z"},"containers":{"cna":{"title":"drm/amdgpu: fix bo->pin leaking in amdgpu_bo_create_reserved","descriptions":[{"lang":"en","value":"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 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)"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"53766e5adac75872e9d413cdbfd0e47ae40701f9","status":"affected","lessThan":"7aea619d9f186dcf0f1289879e9edb69d2b56639","versionType":"git"},{"version":"53766e5adac75872e9d413cdbfd0e47ae40701f9","status":"affected","lessThan":"b572d0814c1366701ca704286589fab025802566","versionType":"git"},{"version":"53766e5adac75872e9d413cdbfd0e47ae40701f9","status":"affected","lessThan":"e06e0885725a16304b7723aeb478a78cca9dc96a","versionType":"git"},{"version":"53766e5adac75872e9d413cdbfd0e47ae40701f9","status":"affected","lessThan":"51eeef1949c11d3dcb5f422a5d9b3f09ebe8a1bc","versionType":"git"},{"version":"53766e5adac75872e9d413cdbfd0e47ae40701f9","status":"affected","lessThan":"2f390b4c83011452753fd84972f657d2b00a952b","versionType":"git"},{"version":"53766e5adac75872e9d413cdbfd0e47ae40701f9","status":"affected","lessThan":"ba7b6444097a73ccd3d3ac9e2be4ebb73d226460","versionType":"git"},{"version":"53766e5adac75872e9d413cdbfd0e47ae40701f9","status":"affected","lessThan":"9743f60013273987abf415dc47474683d22aaee9","versionType":"git"},{"version":"53766e5adac75872e9d413cdbfd0e47ae40701f9","status":"affected","lessThan":"a2f895f3c852063258d62e9f74b081de07ca95df","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdgpu/amdgpu_object.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.14","versionType":"semver"},{"version":"5.10.265","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.216","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.183","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.148","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.101","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.42","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.6","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdgpu/amdgpu_object.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-19T16:32:06.457Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"5.10.265"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"5.15.216"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"6.1.183"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"6.6.148"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"6.12.101"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"6.18.42"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"7.1.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}