CVE-2026-74448 (GCVE-0-2026-74448)
Vulnerability from cvelistv5
Published
2026-08-15 12:26
Modified
2026-08-18 06:56
Severity ?
VLAI Severity ?
EPSS score ?
Summary
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)
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 0f88894aa628680747ae27760e5f627f901a435f Version: c0ef1c8ef70bfa3487ea84f794d7a1f0fea0735d Version: fddc45026311c05a5355fd34b9dc0a1d7eaef4a2 Version: fddc45026311c05a5355fd34b9dc0a1d7eaef4a2 Version: fddc45026311c05a5355fd34b9dc0a1d7eaef4a2 Version: 9d61e2b81f5fc90c87975879809346e7c90ea5f9 Version: d86ba913bbfd1afafacbfb750001ffc6bfe29da0 Version: 6.6.87 ≤ Version: 6.12.23 ≤ Version: 6.13.11 ≤ Version: 6.14.2 ≤ |
||
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "8924e2594a15bdbd07f8696770864366d787ab70",
"status": "affected",
"version": "0f88894aa628680747ae27760e5f627f901a435f",
"versionType": "git"
},
{
"lessThan": "2ff5bb3645c72b3690e70c513a62a86600c4632f",
"status": "affected",
"version": "c0ef1c8ef70bfa3487ea84f794d7a1f0fea0735d",
"versionType": "git"
},
{
"lessThan": "5f0f2ddeac738e2ca9d12cb76a1ff2904e85ecc3",
"status": "affected",
"version": "fddc45026311c05a5355fd34b9dc0a1d7eaef4a2",
"versionType": "git"
},
{
"lessThan": "7c35bf94150d872e670a6632aa819d320279effb",
"status": "affected",
"version": "fddc45026311c05a5355fd34b9dc0a1d7eaef4a2",
"versionType": "git"
},
{
"lessThan": "38b73293f38658a4685ffcea666462024f858ad9",
"status": "affected",
"version": "fddc45026311c05a5355fd34b9dc0a1d7eaef4a2",
"versionType": "git"
},
{
"status": "affected",
"version": "9d61e2b81f5fc90c87975879809346e7c90ea5f9",
"versionType": "git"
},
{
"status": "affected",
"version": "d86ba913bbfd1afafacbfb750001ffc6bfe29da0",
"versionType": "git"
},
{
"lessThan": "6.6.151",
"status": "affected",
"version": "6.6.87",
"versionType": "semver"
},
{
"lessThan": "6.12.103",
"status": "affected",
"version": "6.12.23",
"versionType": "semver"
},
{
"lessThan": "6.14",
"status": "affected",
"version": "6.13.11",
"versionType": "semver"
},
{
"lessThan": "6.15",
"status": "affected",
"version": "6.14.2",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.15"
},
{
"lessThan": "6.15",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.151",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.103",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.44",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.8",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.151",
"versionStartIncluding": "6.6.87",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.103",
"versionStartIncluding": "6.12.23",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.44",
"versionStartIncluding": "6.15",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.1.8",
"versionStartIncluding": "6.15",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.2",
"versionStartIncluding": "6.15",
"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",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"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 \u0027return retval\u0027 without going through the err_create_queue\ncleanup label.\n\nThis means clear_bit(*qid, pqm-\u003equeue_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 \u0027return retval\u0027 with \u0027goto err_allocate_pqn\u0027\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)"
}
],
"providerMetadata": {
"dateUpdated": "2026-08-18T06:56:34.583Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"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"
}
],
"title": "drm/amdkfd: fix QID bit leak in pqm_create_queue()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-74448",
"datePublished": "2026-08-15T12:26:53.915Z",
"dateReserved": "2026-08-15T05:44:03.899Z",
"dateUpdated": "2026-08-18T06:56:34.583Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…