Vulnerability-Lookup

GHSA-J5M6-WGMM-M7M9

Vulnerability from github – Published: 2026-04-24 15:32 – Updated: 2026-04-24 15:32

Details

In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu: Fix fence put before wait in amdgpu_amdkfd_submit_ib

amdgpu_amdkfd_submit_ib() submits a GPU job and gets a fence from amdgpu_ib_schedule(). This fence is used to wait for job completion.

Currently, the code drops the fence reference using dma_fence_put() before calling dma_fence_wait().

If dma_fence_put() releases the last reference, the fence may be freed before dma_fence_wait() is called. This can lead to a use-after-free.

Fix this by waiting on the fence first and releasing the reference only after dma_fence_wait() completes.

Fixes the below: drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c:697 amdgpu_amdkfd_submit_ib() warn: passing freed memory 'f' (line 696)

(cherry picked from commit 8b9e5259adc385b61a6590a13b82ae0ac2bd3482)

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{
  "affected": [],
  "aliases": [
    "CVE-2026-31566"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-24T15:16:31Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: Fix fence put before wait in amdgpu_amdkfd_submit_ib\n\namdgpu_amdkfd_submit_ib() submits a GPU job and gets a fence\nfrom amdgpu_ib_schedule(). This fence is used to wait for job\ncompletion.\n\nCurrently, the code drops the fence reference using dma_fence_put()\nbefore calling dma_fence_wait().\n\nIf dma_fence_put() releases the last reference, the fence may be\nfreed before dma_fence_wait() is called. This can lead to a\nuse-after-free.\n\nFix this by waiting on the fence first and releasing the reference\nonly after dma_fence_wait() completes.\n\nFixes the below:\ndrivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c:697 amdgpu_amdkfd_submit_ib() warn: passing freed memory \u0027f\u0027 (line 696)\n\n(cherry picked from commit 8b9e5259adc385b61a6590a13b82ae0ac2bd3482)",
  "id": "GHSA-j5m6-wgmm-m7m9",
  "modified": "2026-04-24T15:32:34Z",
  "published": "2026-04-24T15:32:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31566"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/138e42be35ff2ce6572ae744de851ea286cf3c69"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/39820864eacd886f1a6f817414fb8f9ea3e9a2b4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/42d248726a0837640452b71c5a202ca3d35239ec"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7150850146ebfa4ca998f653f264b8df6f7f85be"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bc7760c107dc08ef3e231d72c492e67b0a86848b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e23602eb0779760544314ed3905fa6a89a4e4070"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-31566 (GCVE-0-2026-31566)

Vulnerability from cvelistv5 – Published: 2026-04-24 14:35 – Updated: 2026-04-24 14:35

Title

drm/amdgpu: Fix fence put before wait in amdgpu_amdkfd_submit_ib

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix fence put before wait in amdgpu_amdkfd_submit_ib amdgpu_amdkfd_submit_ib() submits a GPU job and gets a fence from amdgpu_ib_schedule(). This fence is used to wait for job completion. Currently, the code drops the fence reference using dma_fence_put() before calling dma_fence_wait(). If dma_fence_put() releases the last reference, the fence may be freed before dma_fence_wait() is called. This can lead to a use-after-free. Fix this by waiting on the fence first and releasing the reference only after dma_fence_wait() completes. Fixes the below: drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c:697 amdgpu_amdkfd_submit_ib() warn: passing freed memory 'f' (line 696) (cherry picked from commit 8b9e5259adc385b61a6590a13b82ae0ac2bd3482)

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/bc7760c107dc08ef3…
	https://git.kernel.org/stable/c/e23602eb077976054…
	https://git.kernel.org/stable/c/138e42be35ff2ce65…
	https://git.kernel.org/stable/c/39820864eacd886f1…
	https://git.kernel.org/stable/c/42d248726a0837640…
	https://git.kernel.org/stable/c/7150850146ebfa4ca…

Impacted products

Vendor

Product

Version

Linux

Affected: 9ae55f030dc523fc4dc6069557e4a887ea815453 , < bc7760c107dc08ef3e231d72c492e67b0a86848b (git)
Affected: 9ae55f030dc523fc4dc6069557e4a887ea815453 , < e23602eb0779760544314ed3905fa6a89a4e4070 (git)
Affected: 9ae55f030dc523fc4dc6069557e4a887ea815453 , < 138e42be35ff2ce6572ae744de851ea286cf3c69 (git)
Affected: 9ae55f030dc523fc4dc6069557e4a887ea815453 , < 39820864eacd886f1a6f817414fb8f9ea3e9a2b4 (git)
Affected: 9ae55f030dc523fc4dc6069557e4a887ea815453 , < 42d248726a0837640452b71c5a202ca3d35239ec (git)
Affected: 9ae55f030dc523fc4dc6069557e4a887ea815453 , < 7150850146ebfa4ca998f653f264b8df6f7f85be (git)

Linux

Affected: 6.0
Unaffected: 0 , < 6.0 (semver)
Unaffected: 6.1.168 , ≤ 6.1.* (semver)
Unaffected: 6.6.131 , ≤ 6.6.* (semver)
Unaffected: 6.12.80 , ≤ 6.12.* (semver)
Unaffected: 6.18.21 , ≤ 6.18.* (semver)
Unaffected: 6.19.11 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

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Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-J5M6-WGMM-M7M9

CVE-2026-31566 (GCVE-0-2026-31566)

Tags

Sightings

Nomenclature