{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-46803",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-29T14:20:52.974033Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-29T14:21:05.556Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdkfd/kfd_debug.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e6ea3b8fe398915338147fe54dd2db8155fdafd8",
              "status": "affected",
              "version": "0ab2d7532b05a3e7c06fd3b0c8bd6b46c1dfb508",
              "versionType": "git"
            },
            {
              "lessThan": "820dcbd38a77bd5fdc4236d521c1c122841227d0",
              "status": "affected",
              "version": "0ab2d7532b05a3e7c06fd3b0c8bd6b46c1dfb508",
              "versionType": "git"
            },
            {
              "lessThan": "547033b593063eb85bfdf9b25a5f1b8fd1911be2",
              "status": "affected",
              "version": "0ab2d7532b05a3e7c06fd3b0c8bd6b46c1dfb508",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdkfd/kfd_debug.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.5"
            },
            {
              "lessThan": "6.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.50",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.10.*",
              "status": "unaffected",
              "version": "6.10.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.11",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.50",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.10.9",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.11",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Check debug trap enable before write dbg_ev_file\n\nIn interrupt context, write dbg_ev_file will be run by work queue. It\nwill cause write dbg_ev_file execution after debug_trap_disable, which\nwill cause NULL pointer access.\nv2: cancel work \"debug_event_workarea\" before set dbg_ev_file as NULL."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerability is reached through the AMDKFD_IOC_DBG_TRAP ioctl on the /dev/kfd character device (and the process-teardown path), requiring local access to the machine. No network or remote protocol handling is involved.\nAC:L - The attacker controls both sides of the race: they flood debug exceptions by submitting shaders that raise SQ traps/bad opcodes/memory violations (queuing the work item from GPU IRQ) while concurrently issuing KFD_IOC_DBG_TRAP_DISABLE in a loop, and can retry indefinitely until the window is hit.\nPR:L - Only an unprivileged local account with access to /dev/kfd is needed \u2014 kfd_open() performs no capability check and the ptrace_parent() gate in kfd_ioctl_set_debug_trap() is bypassed entirely when a process debugs itself (target == p). ROCm systems ship /dev/kfd world- or render-group-accessible, so any local user on an AMD GPU compute node qualifies.\nUI:N - The attacking process performs every step itself \u2014 enabling debug trap, submitting the faulting GPU work, and disabling the trap. No victim action or interaction is required.\nS:U - The corruption and its consequences are confined to the kernel of the same host; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - After fput() drops the last reference, the worker uses a dangling struct file from the filp slab cache, and an attacker who reclaims that object controls the f_op table used by kernel_write \u2014 a use-after-free that can be leveraged into arbitrary kernel memory disclosure.\nI:H - __kernel_write_iter() indirectly calls file-\u003ef_op-\u003ewrite_iter() on the freed struct file, giving a direct control-flow-hijack primitive once the attacker sprays the reclaimed filp object, which translates into arbitrary kernel write and privilege escalation.\nA:H - The commonly observed outcome is a NULL pointer dereference in kernel_write() from a kworker context, oopsing the kernel; the use-after-free variant likewise crashes the machine, and the attacker can trigger it repeatedly."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:38:41.734Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e6ea3b8fe398915338147fe54dd2db8155fdafd8"
        },
        {
          "url": "https://git.kernel.org/stable/c/820dcbd38a77bd5fdc4236d521c1c122841227d0"
        },
        {
          "url": "https://git.kernel.org/stable/c/547033b593063eb85bfdf9b25a5f1b8fd1911be2"
        }
      ],
      "title": "drm/amdkfd: Check debug trap enable before write dbg_ev_file",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-46803",
    "datePublished": "2024-09-27T12:35:49.185Z",
    "dateReserved": "2024-09-11T15:12:18.281Z",
    "dateUpdated": "2026-08-05T11:38:41.734Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}