{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-53638",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-15T21:36:10.331237Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-15T21:41:32.530Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/marvell/octeon_ep/octep_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "62312e2f6466b5f0a120542a38b410d88a34ed00",
              "status": "affected",
              "version": "24d4333233b378114106a1327d3d635a004f4387",
              "versionType": "git"
            },
            {
              "lessThan": "758c91078165ae641b698750a72eafe7968b3756",
              "status": "affected",
              "version": "24d4333233b378114106a1327d3d635a004f4387",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/marvell/octeon_ep/octep_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "lessThan": "6.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.4.*",
              "status": "unaffected",
              "version": "6.4.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.5",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.4.12",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.5",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteon_ep: cancel queued works in probe error path\n\nIf it fails to get the devices\u0027s MAC address, octep_probe exits while\nleaving the delayed work intr_poll_task queued. When the work later\nruns, it\u0027s a use after free.\n\nMove the cancelation of intr_poll_task from octep_remove into\noctep_device_cleanup. This does not change anything in the octep_remove\nflow, but octep_device_cleanup is called also in the octep_probe error\npath, where the cancelation is needed.\n\nNote that the cancelation of ctrl_mbox_task has to follow\nintr_poll_task\u0027s, because the ctrl_mbox_task may be queued by\nintr_poll_task."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerable code is the PCI probe path of the octeon_ep driver, reached via local device enumeration, hotplug, module load, or sysfs bind/unbind on the host. No remote network protocol handling is involved.\nAC:H - Exploitation requires `octep_probe()` to fail after the poll work is queued \u2014 i.e. the Octeon endpoint firmware must fail to answer the MAC-address mailbox request within the 500 ms timeout (or register_netdev must fail), a device/firmware state an attacker on the host cannot reliably force. Turning the resulting UAF into more than an oops additionally requires reclaiming the freed netdev allocation within the ~50 ms work delay.\nPR:L - The UAF fires from a workqueue with no host credentials needed once probe fails, and the probe can be re-triggered through driver bind/unbind; a low-privileged attacker suffices to be present when the freed object is reclaimed, so PR is not raised to High.\nUI:N - The delayed work fires automatically 50 ms after the probe error path frees the device; no victim action is required beyond the normal device probe that happens at boot or hotplug.\nS:U - Both the vulnerable code and the corrupted memory are in the host kernel, so the impact stays within a single security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The work handler reads `oct-\u003epoll_non_ioq_intr` and the `hw_ops` function-pointer table out of freed slab memory; controlling the reclaiming allocation gives an attacker a read primitive over kernel heap contents and leaks kernel state.\nI:H - `queue_delayed_work()` and `queue_work()` write into the freed work/timer structures, and `oct-\u003ehw_ops.poll_non_ioq_interrupts(oct)` is an indirect call through a function pointer read from freed memory \u2014 a direct control-flow hijack primitive once the allocation is sprayed.\nA:H - Even unexploited, the work dereferences freed memory and accesses already-iounmap\u0027ed MMIO, reliably producing a kernel oops/panic (this is the crash the fix was written for)."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T09:15:16.890Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/62312e2f6466b5f0a120542a38b410d88a34ed00"
        },
        {
          "url": "https://git.kernel.org/stable/c/758c91078165ae641b698750a72eafe7968b3756"
        }
      ],
      "title": "octeon_ep: cancel queued works in probe error path",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53638",
    "datePublished": "2025-10-07T15:19:38.989Z",
    "dateReserved": "2025-10-07T15:16:59.658Z",
    "dateUpdated": "2026-10-15T21:41:32.530Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}