{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/firmware/arm_scmi/driver.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6d91d07913aee90556362d648d6a28a1eda419dc",
              "status": "affected",
              "version": "c3d4aed763ce4a39f8ed36c7b7cd9a6a35971329",
              "versionType": "git"
            },
            {
              "lessThan": "fb324fdaf546bf14bc4c17e0037bca6cb952b121",
              "status": "affected",
              "version": "c3d4aed763ce4a39f8ed36c7b7cd9a6a35971329",
              "versionType": "git"
            },
            {
              "lessThan": "39b13dce1a91cdfc3bec9238f9e89094551bd428",
              "status": "affected",
              "version": "c3d4aed763ce4a39f8ed36c7b7cd9a6a35971329",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/firmware/arm_scmi/driver.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.3"
            },
            {
              "lessThan": "6.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.59",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.59",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.11.6",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Fix the double free in scmi_debugfs_common_setup()\n\nClang static checker(scan-build) throws below warning\uff1a\n  |  drivers/firmware/arm_scmi/driver.c:line 2915, column 2\n  |        Attempt to free released memory.\n\nWhen devm_add_action_or_reset() fails, scmi_debugfs_common_cleanup()\nwill run twice which causes double free of \u0027dbg-\u003ename\u0027.\n\nRemove the redundant scmi_debugfs_common_cleanup() to fix this problem."
        }
      ],
      "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 defect lives in the `arm-scmi` platform driver\u0027s `scmi_probe()` debugfs setup path, which is only executed during local device/driver binding \u2014 there is no network, packet, or remote-peer input anywhere on the path. Reaching it requires local system context (boot, module load, or deferred-probe retry), so Local is the appropriate vector.\nAC:H - The double free is only reached when `__devres_alloc_node()` returns NULL, i.e. a small GFP_KERNEL allocation fails at one exact instant during a one-shot probe; small GFP_KERNEL allocations reclaim or OOM-kill rather than fail, and `.suppress_bind_attrs = true` removes any sysfs re-probe retry loop. The attacker cannot initiate the probe nor steer that specific allocation, so success depends on conditions genuinely outside their control, compounded by the non-default `CONFIG_ARM_SCMI_RAW_MODE_SUPPORT`/`CONFIG_ARM_SCMI_DEBUG_COUNTERS` requirement.\nPR:L - The only attacker-influenceable ingredient is system memory pressure, which an ordinary unprivileged local process can generate without any capability, and SCMI probe can occur after userspace is up via udev-driven module load or deferred-probe retry. Choosing the higher-severity option over PR:H, which would otherwise apply since deliberately initiating a probe needs CAP_SYS_MODULE.\nUI:N - Driver probe and the debugfs setup run autonomously from the DT/platform-device match; no victim must open a file, mount a filesystem, or take any other action. The error path executes purely as a consequence of the allocation failure.\nS:U - The double free corrupts the kernel\u0027s own slab allocator and dentry cache within the same kernel security authority. No hypervisor, IOMMU, container, or sandbox boundary is crossed.\nC:H - A slab double free lets the same object be handed out to two independent allocations, and the redundant `debugfs_remove_recursive()` additionally dereferences a released dentry \u2014 both are read primitives over attacker-unrelated kernel objects. Consistent with treating use-after-free/double-free as enabling arbitrary kernel memory disclosure.\nI:H - Freeing `dbg-\u003ename` and `dbg-\u003etype` twice corrupts the SLUB freelist, the standard stepping stone to aliased-object and arbitrary-write primitives, and the stale dentry is written through by the second recursive removal. Memory corruption of this class is scored as enabling control-flow hijacking.\nA:H - With freelist hardening the second `kfree()` raises a BUG/panic outright; without it, freelist corruption and the dentry use-after-free reliably lead to an oops during subsequent allocation or dcache activity. Either outcome is a full kernel crash."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:42:09.468Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/6d91d07913aee90556362d648d6a28a1eda419dc"
        },
        {
          "url": "https://git.kernel.org/stable/c/fb324fdaf546bf14bc4c17e0037bca6cb952b121"
        },
        {
          "url": "https://git.kernel.org/stable/c/39b13dce1a91cdfc3bec9238f9e89094551bd428"
        }
      ],
      "title": "firmware: arm_scmi: Fix the double free in scmi_debugfs_common_setup()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-50159",
    "datePublished": "2024-11-07T09:31:36.167Z",
    "dateReserved": "2024-10-21T19:36:19.961Z",
    "dateUpdated": "2026-08-05T11:42:09.468Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}