{"id":"CVE-2026-74448","state":"PUBLISHED","title":"drm/amdkfd: fix QID bit leak in pqm_create_queue()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: fix QID bit leak in pqm_create_queue()\n\nWhen MES is enabled and amdgpu_amdkfd_alloc_kernel_mem() fails during\nthe first queue creation for a process, pqm_create_queue() returns\nearly via 'return retval' without going through the err_create_queue\ncleanup label.\n\nThis means clear_bit(*qid, pqm->queue_slot_bitmap) is never called,\nleaving the reserved QID bit permanently set in queue_slot_bitmap.\nOver time this leaks QID slots, potentially exhausting all available\nqueue slots.\n\nFix this by replacing 'return retval' with 'goto err_allocate_pqn'\nso that clear_bit() is always called on the error path without\ntouching the uninitialized pqn pointer.\n\nAILIKFD-813\n\n(cherry picked from commit a107f74c38edbb80d6ab64dcaeeb292c14e9779f)","publishedAt":"2026-08-15T12:26:53.915Z","updatedAt":"2026-08-18T06:56:34.583Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"0f88894aa628680747ae27760e5f627f901a435f","status":"affected","lessThan":"8924e2594a15bdbd07f8696770864366d787ab70","versionType":"git"},{"version":"c0ef1c8ef70bfa3487ea84f794d7a1f0fea0735d","status":"affected","lessThan":"2ff5bb3645c72b3690e70c513a62a86600c4632f","versionType":"git"},{"version":"fddc45026311c05a5355fd34b9dc0a1d7eaef4a2","status":"affected","lessThan":"5f0f2ddeac738e2ca9d12cb76a1ff2904e85ecc3","versionType":"git"},{"version":"fddc45026311c05a5355fd34b9dc0a1d7eaef4a2","status":"affected","lessThan":"7c35bf94150d872e670a6632aa819d320279effb","versionType":"git"},{"version":"fddc45026311c05a5355fd34b9dc0a1d7eaef4a2","status":"affected","lessThan":"38b73293f38658a4685ffcea666462024f858ad9","versionType":"git"},{"version":"9d61e2b81f5fc90c87975879809346e7c90ea5f9","status":"affected","versionType":"git"},{"version":"d86ba913bbfd1afafacbfb750001ffc6bfe29da0","status":"affected","versionType":"git"},{"version":"6.6.87","status":"affected","lessThan":"6.6.151","versionType":"semver"},{"version":"6.12.23","status":"affected","lessThan":"6.12.103","versionType":"semver"},{"version":"6.13.11","status":"affected","lessThan":"6.14","versionType":"semver"},{"version":"6.14.2","status":"affected","lessThan":"6.15","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.15","versionType":"semver"},{"version":"6.6.151","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.103","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.44","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.8","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/amdkfd/kfd_process_queue_manager.c"]}],"references":["https://git.kernel.org/stable/c/8924e2594a15bdbd07f8696770864366d787ab70","https://git.kernel.org/stable/c/2ff5bb3645c72b3690e70c513a62a86600c4632f","https://git.kernel.org/stable/c/5f0f2ddeac738e2ca9d12cb76a1ff2904e85ecc3","https://git.kernel.org/stable/c/7c35bf94150d872e670a6632aa819d320279effb","https://git.kernel.org/stable/c/38b73293f38658a4685ffcea666462024f858ad9"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/74xxx/CVE-2026-74448.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74448","state":"PUBLISHED","datePublished":"2026-08-15T12:26:53.915Z","dateUpdated":"2026-08-18T06:56:34.583Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-15T05:44:03.899Z"},"containers":{"cna":{"title":"drm/amdkfd: fix QID bit leak in pqm_create_queue()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: fix QID bit leak in pqm_create_queue()\n\nWhen MES is enabled and amdgpu_amdkfd_alloc_kernel_mem() fails during\nthe first queue creation for a process, pqm_create_queue() returns\nearly via 'return retval' without going through the err_create_queue\ncleanup label.\n\nThis means clear_bit(*qid, pqm->queue_slot_bitmap) is never called,\nleaving the reserved QID bit permanently set in queue_slot_bitmap.\nOver time this leaks QID slots, potentially exhausting all available\nqueue slots.\n\nFix this by replacing 'return retval' with 'goto err_allocate_pqn'\nso that clear_bit() is always called on the error path without\ntouching the uninitialized pqn pointer.\n\nAILIKFD-813\n\n(cherry picked from commit a107f74c38edbb80d6ab64dcaeeb292c14e9779f)"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"0f88894aa628680747ae27760e5f627f901a435f","status":"affected","lessThan":"8924e2594a15bdbd07f8696770864366d787ab70","versionType":"git"},{"version":"c0ef1c8ef70bfa3487ea84f794d7a1f0fea0735d","status":"affected","lessThan":"2ff5bb3645c72b3690e70c513a62a86600c4632f","versionType":"git"},{"version":"fddc45026311c05a5355fd34b9dc0a1d7eaef4a2","status":"affected","lessThan":"5f0f2ddeac738e2ca9d12cb76a1ff2904e85ecc3","versionType":"git"},{"version":"fddc45026311c05a5355fd34b9dc0a1d7eaef4a2","status":"affected","lessThan":"7c35bf94150d872e670a6632aa819d320279effb","versionType":"git"},{"version":"fddc45026311c05a5355fd34b9dc0a1d7eaef4a2","status":"affected","lessThan":"38b73293f38658a4685ffcea666462024f858ad9","versionType":"git"},{"version":"9d61e2b81f5fc90c87975879809346e7c90ea5f9","status":"affected","versionType":"git"},{"version":"d86ba913bbfd1afafacbfb750001ffc6bfe29da0","status":"affected","versionType":"git"},{"version":"6.6.87","status":"affected","lessThan":"6.6.151","versionType":"semver"},{"version":"6.12.23","status":"affected","lessThan":"6.12.103","versionType":"semver"},{"version":"6.13.11","status":"affected","lessThan":"6.14","versionType":"semver"},{"version":"6.14.2","status":"affected","lessThan":"6.15","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.15","versionType":"semver"},{"version":"6.6.151","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.103","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.44","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.8","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/amdkfd/kfd_process_queue_manager.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/8924e2594a15bdbd07f8696770864366d787ab70"},{"url":"https://git.kernel.org/stable/c/2ff5bb3645c72b3690e70c513a62a86600c4632f"},{"url":"https://git.kernel.org/stable/c/5f0f2ddeac738e2ca9d12cb76a1ff2904e85ecc3"},{"url":"https://git.kernel.org/stable/c/7c35bf94150d872e670a6632aa819d320279effb"},{"url":"https://git.kernel.org/stable/c/38b73293f38658a4685ffcea666462024f858ad9"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-18T06:56:34.583Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.87","versionEndExcluding":"6.6.151"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12.23","versionEndExcluding":"6.12.103"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"6.18.44"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"7.1.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"7.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}