CVE-2026-74448

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: fix QID bit leak in pqm_create_queue() When MES is enabled and amdgpu_amdkfd_alloc_kernel_mem() fails during the first queue creation for a process, pqm_create_queue() returns early via 'return retval' without going through the err_create_queue cleanup label. This means clear_bit(*qid, pqm->queue_slot_bitmap) is never called, leaving the reserved QID bit permanently set in queue_slot_bitmap. Over time this leaks QID slots, potentially exhausting all available queue slots. Fix this by replacing 'return retval' with 'goto err_allocate_pqn' so that clear_bit() is always called on the error path without touching the uninitialized pqn pointer. AILIKFD-813 (cherry picked from commit a107f74c38edbb80d6ab64dcaeeb292c14e9779f)

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/2ff5bb3645c72b3690e70c513a62a86600c4632f
https://git.kernel.org/stable/c/38b73293f38658a4685ffcea666462024f858ad9
https://git.kernel.org/stable/c/5f0f2ddeac738e2ca9d12cb76a1ff2904e85ecc3
https://git.kernel.org/stable/c/7c35bf94150d872e670a6632aa819d320279effb
https://git.kernel.org/stable/c/8924e2594a15bdbd07f8696770864366d787ab70

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-15 13:17

Updated : 2026-08-18 07:16

NVD link : CVE-2026-74448

Mitre link : CVE-2026-74448

CVE.ORG link : CVE-2026-74448

JSON object : View

Products Affected

No product.

CWE

No CWE.

{"id": "CVE-2026-74448", "cveTags": [], "metrics": {}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "0f88894aa628680747ae27760e5f627f901a435f", "lessThan": "8924e2594a15bdbd07f8696770864366d787ab70", "versionType": "git"}, {"status": "affected", "version": "c0ef1c8ef70bfa3487ea84f794d7a1f0fea0735d", "lessThan": "2ff5bb3645c72b3690e70c513a62a86600c4632f", "versionType": "git"}, {"status": "affected", "version": "fddc45026311c05a5355fd34b9dc0a1d7eaef4a2", "lessThan": "5f0f2ddeac738e2ca9d12cb76a1ff2904e85ecc3", "versionType": "git"}, {"status": "affected", "version": "fddc45026311c05a5355fd34b9dc0a1d7eaef4a2", "lessThan": "7c35bf94150d872e670a6632aa819d320279effb", "versionType": "git"}, {"status": "affected", "version": "fddc45026311c05a5355fd34b9dc0a1d7eaef4a2", "lessThan": "38b73293f38658a4685ffcea666462024f858ad9", "versionType": "git"}, {"status": "affected", "version": "9d61e2b81f5fc90c87975879809346e7c90ea5f9", "versionType": "git"}, {"status": "affected", "version": "d86ba913bbfd1afafacbfb750001ffc6bfe29da0", "versionType": "git"}, {"status": "affected", "version": "6.6.87", "lessThan": "6.6.151", "versionType": "semver"}, {"status": "affected", "version": "6.12.23", "lessThan": "6.12.103", "versionType": "semver"}, {"status": "affected", "version": "6.13.11", "lessThan": "6.14", "versionType": "semver"}, {"status": "affected", "version": "6.14.2", "lessThan": "6.15", "versionType": "semver"}], "programFiles": ["drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.15"}, {"status": "unaffected", "version": "0", "lessThan": "6.15", "versionType": "semver"}, {"status": "unaffected", "version": "6.6.151", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.103", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.44", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.8", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c"], "defaultStatus": "affected"}]}], "published": "2026-08-15T13:17:49.390", "references": [{"url": "https://git.kernel.org/stable/c/2ff5bb3645c72b3690e70c513a62a86600c4632f", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/38b73293f38658a4685ffcea666462024f858ad9", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/5f0f2ddeac738e2ca9d12cb76a1ff2904e85ecc3", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7c35bf94150d872e670a6632aa819d320279effb", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/8924e2594a15bdbd07f8696770864366d787ab70", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Received", "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)"}], "lastModified": "2026-08-18T07:16:54.720", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}