Vulnerability-Lookup

GHSA-GJ49-2HQ5-G5H7

Vulnerability from github – Published: 2024-10-21 18:30 – Updated: 2025-11-04 00:31

Details

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

drm/amdkfd: amdkfd_free_gtt_mem clear the correct pointer

Pass pointer reference to amdgpu_bo_unref to clear the correct pointer, otherwise amdgpu_bo_unref clear the local variable, the original pointer not set to NULL, this could cause use-after-free bug.

Severity

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2024-49991"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T18:15:19Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: amdkfd_free_gtt_mem clear the correct pointer\n\nPass pointer reference to amdgpu_bo_unref to clear the correct pointer,\notherwise amdgpu_bo_unref clear the local variable, the original pointer\nnot set to NULL, this could cause use-after-free bug.",
  "id": "GHSA-gj49-2hq5-g5h7",
  "modified": "2025-11-04T00:31:44Z",
  "published": "2024-10-21T18:30:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49991"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/30ceb873cc2e97348d9da2265b2d1ddf07f682e1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6c9289806591807e4e3be9a23df8ee2069180055"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/71f3240f82987f0f070ea5bed559033de7d4c0e1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c86ad39140bbcb9dc75a10046c2221f657e8083b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e7831613cbbcd9058d3658fbcdc5d5884ceb2e0c"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2024-49991 (GCVE-0-2024-49991)

Vulnerability from cvelistv5 – Published: 2024-10-21 18:02 – Updated: 2026-08-05 11:40

Title

drm/amdkfd: amdkfd_free_gtt_mem clear the correct pointer

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: amdkfd_free_gtt_mem clear the correct pointer Pass pointer reference to amdgpu_bo_unref to clear the correct pointer, otherwise amdgpu_bo_unref clear the local variable, the original pointer not set to NULL, this could cause use-after-free bug.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-10-22 13:31 UTC

Assigner

Linux mitre root

References

6 references

URL	Tags
https://git.kernel.org/stable/c/e7831613cbbcd9058…
https://git.kernel.org/stable/c/30ceb873cc2e97348…
https://git.kernel.org/stable/c/71f3240f82987f0f0…
https://git.kernel.org/stable/c/6c9289806591807e4…
https://git.kernel.org/stable/c/c86ad39140bbcb9dc…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 130e0371b7d454bb4a861253c822b9f911ad5d19 , < e7831613cbbcd9058d3658fbcdc5d5884ceb2e0c (git) Affected: 130e0371b7d454bb4a861253c822b9f911ad5d19 , < 30ceb873cc2e97348d9da2265b2d1ddf07f682e1 (git) Affected: 130e0371b7d454bb4a861253c822b9f911ad5d19 , < 71f3240f82987f0f070ea5bed559033de7d4c0e1 (git) Affected: 130e0371b7d454bb4a861253c822b9f911ad5d19 , < 6c9289806591807e4e3be9a23df8ee2069180055 (git) Affected: 130e0371b7d454bb4a861253c822b9f911ad5d19 , < c86ad39140bbcb9dc75a10046c2221f657e8083b (git)
Linux	Linux	Affected: 4.3 Unaffected: 0 , < 4.3 (semver) Unaffected: 6.1.118 , ≤ 6.1.* (semver) Unaffected: 6.6.55 , ≤ 6.6.* (semver) Unaffected: 6.10.14 , ≤ 6.10.* (semver) Unaffected: 6.11.3 , ≤ 6.11.* (semver) Unaffected: 6.12 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-49991",
                "options": [
                  {
                    "Exploitation": "none"
                  },
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
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                "role": "CISA Coordinator",
                "timestamp": "2024-10-22T13:31:14.431279Z",
                "version": "2.0.3"
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        "providerMetadata": {
          "dateUpdated": "2024-10-22T13:38:42.686Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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            "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
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          "programFiles": [
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            "drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h",
            "drivers/gpu/drm/amd/amdkfd/kfd_chardev.c",
            "drivers/gpu/drm/amd/amdkfd/kfd_device.c",
            "drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c",
            "drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c",
            "drivers/gpu/drm/amd/amdkfd/kfd_process.c",
            "drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c"
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            "drivers/gpu/drm/amd/amdkfd/kfd_device.c",
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            "drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c",
            "drivers/gpu/drm/amd/amdkfd/kfd_process.c",
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              "value": "AV:L - The vulnerable paths are reached only through ioctls on the local `/dev/kfd` character device (`kfd_ioctl_create_queue`, `kfd_ioctl_destroy_queue`) and through process teardown in `kfd_process_destroy_pdds()`. No network or adjacent-network exposure exists.\nAC:L - The attacker fully controls queue creation/destruction and process exit, so the free of the `amdgpu_bo` and the subsequent reuse of the stale pointer are directly and repeatably triggerable with no race or memory-layout condition outside the attacker\u0027s influence. Standard heap grooming from userspace controls what reoccupies the freed object.\nPR:L - `kfd_open()` performs no capability check; any local user holding a file descriptor on `/dev/kfd` (render group on desktops, or the device node passed directly into ROCm containers) can drive the paths. No root or CAP_SYS_ADMIN is needed.\nUI:N - The attacker triggers everything from its own process via ioctls and normal process exit; no action by another user or administrator is required.\nS:U - The corruption stays within the kernel\u0027s own memory and security authority \u2014 it is standard in-kernel memory corruption, not a hypervisor, IOMMU, or sandbox boundary crossing.\nC:H - Use-after-free on a `struct amdgpu_bo` lets the attacker reclaim the freed slab object with attacker-shaped data and have the driver dereference it (e.g. `amdgpu_bo_gpu_offset(q-\u003ewptr_bo)`, kmap/CPU-pointer fields), yielding an arbitrary kernel-memory read primitive and disclosure of kernel addresses and contents.\nI:H - The same UAF gives a write primitive \u2014 the freed `amdgpu_bo` is subsequently written through (`amdgpu_bo_kunmap`, `amdgpu_bo_unpin`, refcount and TTM list manipulation) and contains function-pointer-bearing sub-structures, so heap spraying can be leveraged into controlled writes and control-flow hijack for privilege escalation.\nA:H - Even without full exploitation, dereferencing and double-unref\u0027ing a freed buffer object corrupts TTM/slab state and reliably produces an oops or kernel panic, taking down the machine \u2014 and it is triggerable repeatedly by any local user with GPU access."
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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.

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.
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GHSA-GJ49-2HQ5-G5H7

CVE-2024-49991 (GCVE-0-2024-49991)

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