Vulnerability-Lookup

FKIE_CVE-2026-74448

Vulnerability from fkie_nvd - Published: 2026-08-15 13:17 - Updated: 2026-08-18 07:16

Severity

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

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2ff5bb3645c72b3690e70c513a62a86600c4632f
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/38b73293f38658a4685ffcea666462024f858ad9
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5f0f2ddeac738e2ca9d12cb76a1ff2904e85ecc3
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/7c35bf94150d872e670a6632aa819d320279effb
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/8924e2594a15bdbd07f8696770864366d787ab70

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "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"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "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)"
    }
  ],
  "id": "CVE-2026-74448",
  "lastModified": "2026-08-18T07:16:54.720",
  "metrics": {},
  "published": "2026-08-15T13:17:49.390",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "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"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

CVE-2026-74448 (GCVE-0-2026-74448)

Vulnerability from cvelistv5 – Published: 2026-08-15 12:26 – Updated: 2026-08-18 06:56

Title

drm/amdkfd: fix QID bit leak in pqm_create_queue()

Summary

Severity

No CVSS data available.

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/8924e2594a15bdbd0…
https://git.kernel.org/stable/c/2ff5bb3645c72b369…
https://git.kernel.org/stable/c/5f0f2ddeac738e2ca…
https://git.kernel.org/stable/c/7c35bf94150d872e6…
https://git.kernel.org/stable/c/38b73293f38658a46…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 0f88894aa628680747ae27760e5f627f901a435f , < 8924e2594a15bdbd07f8696770864366d787ab70 (git) Affected: c0ef1c8ef70bfa3487ea84f794d7a1f0fea0735d , < 2ff5bb3645c72b3690e70c513a62a86600c4632f (git) Affected: fddc45026311c05a5355fd34b9dc0a1d7eaef4a2 , < 5f0f2ddeac738e2ca9d12cb76a1ff2904e85ecc3 (git) Affected: fddc45026311c05a5355fd34b9dc0a1d7eaef4a2 , < 7c35bf94150d872e670a6632aa819d320279effb (git) Affected: fddc45026311c05a5355fd34b9dc0a1d7eaef4a2 , < 38b73293f38658a4685ffcea666462024f858ad9 (git) Affected: 9d61e2b81f5fc90c87975879809346e7c90ea5f9 (git) Affected: d86ba913bbfd1afafacbfb750001ffc6bfe29da0 (git) Affected: 6.6.87 , < 6.6.151 (semver) Affected: 6.12.23 , < 6.12.103 (semver) Affected: 6.13.11 , < 6.14 (semver) Affected: 6.14.2 , < 6.15 (semver)
Linux	Linux	Affected: 6.15 Unaffected: 0 , < 6.15 (semver) Unaffected: 6.6.151 , ≤ 6.6.* (semver) Unaffected: 6.12.103 , ≤ 6.12.* (semver) Unaffected: 6.18.44 , ≤ 6.18.* (semver) Unaffected: 7.1.8 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "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"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

FKIE_CVE-2026-74448

CVE-2026-74448 (GCVE-0-2026-74448)

Tags

Sightings

Nomenclature