« Volver al listado

CVE-2022-50466

Estado: AnalizadaMedia (5.5)—

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

fs/binfmt_elf: Fix memory leak in load_elf_binary()

There is a memory leak reported by kmemleak:

If "interp_elf_ex" fails to allocate memory in load_elf_binary(), the program will take the "out_free_ph" error handing path, resulting in "interpreter" file resource is not released.

Fix it by adding an error handing path "out_free_file", which will release the file resource when "interp_elf_ex" failed to allocate memory.

Detalles técnicos trazas, registros y código del informe original
  unreferenced object 0xffff88817104ef80 (size 224):
    comm "xfs_admin", pid 47165, jiffies 4298708825 (age 1333.476s)
    hex dump (first 32 bytes):
      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
      60 a8 b3 00 81 88 ff ff a8 10 5a 00 81 88 ff ff  `.........Z.....
    backtrace:
      [<ffffffff819171e1>] __alloc_file+0x21/0x250
      [<ffffffff81918061>] alloc_empty_file+0x41/0xf0
      [<ffffffff81948cda>] path_openat+0xea/0x3d30
      [<ffffffff8194ec89>] do_filp_open+0x1b9/0x290
      [<ffffffff8192660e>] do_open_execat+0xce/0x5b0
      [<ffffffff81926b17>] open_exec+0x27/0x50
      [<ffffffff81a69250>] load_elf_binary+0x510/0x3ed0
      [<ffffffff81927759>] bprm_execve+0x599/0x1240
      [<ffffffff8192a997>] do_execveat_common.isra.0+0x4c7/0x680
      [<ffffffff8192b078>] __x64_sys_execve+0x88/0xb0
      [<ffffffff83bbf0a5>] do_syscall_64+0x35/0x80

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2022-50466",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "0693ffebcfe5ac7b31f63ad54587007f7d96fb7b",
              "lessThan": "706215300411d48db6b51a5832b872632a84bbc1",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "0693ffebcfe5ac7b31f63ad54587007f7d96fb7b",
              "lessThan": "265b6fb780f57d10449a40e94219b28fa52479cc",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "0693ffebcfe5ac7b31f63ad54587007f7d96fb7b",
              "lessThan": "acd9b4914f1c5928c7ae8ebc623d6291eb1a573a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "0693ffebcfe5ac7b31f63ad54587007f7d96fb7b",
              "lessThan": "594d2a14f2168c09b13b114c3d457aa939403e52",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "fs/binfmt_elf.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.7"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.7",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.153",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.77",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.0.7",
              "versionType": "semver",
              "lessThanOrEqual": "6.0.*"
            },
            {
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "fs/binfmt_elf.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-10-01T12:15:40.310",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/265b6fb780f57d10449a40e94219b28fa52479cc",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/594d2a14f2168c09b13b114c3d457aa939403e52",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/706215300411d48db6b51a5832b872632a84bbc1",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/acd9b4914f1c5928c7ae8ebc623d6291eb1a573a",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/binfmt_elf: Fix memory leak in load_elf_binary()\n\nThere is a memory leak reported by kmemleak:\n\n  unreferenced object 0xffff88817104ef80 (size 224):\n    comm \"xfs_admin\", pid 47165, jiffies 4298708825 (age 1333.476s)\n    hex dump (first 32 bytes):\n      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n      60 a8 b3 00 81 88 ff ff a8 10 5a 00 81 88 ff ff  `.........Z.....\n    backtrace:\n      [<ffffffff819171e1>] __alloc_file+0x21/0x250\n      [<ffffffff81918061>] alloc_empty_file+0x41/0xf0\n      [<ffffffff81948cda>] path_openat+0xea/0x3d30\n      [<ffffffff8194ec89>] do_filp_open+0x1b9/0x290\n      [<ffffffff8192660e>] do_open_execat+0xce/0x5b0\n      [<ffffffff81926b17>] open_exec+0x27/0x50\n      [<ffffffff81a69250>] load_elf_binary+0x510/0x3ed0\n      [<ffffffff81927759>] bprm_execve+0x599/0x1240\n      [<ffffffff8192a997>] do_execveat_common.isra.0+0x4c7/0x680\n      [<ffffffff8192b078>] __x64_sys_execve+0x88/0xb0\n      [<ffffffff83bbf0a5>] do_syscall_64+0x35/0x80\n\nIf \"interp_elf_ex\" fails to allocate memory in load_elf_binary(),\nthe program will take the \"out_free_ph\" error handing path,\nresulting in \"interpreter\" file resource is not released.\n\nFix it by adding an error handing path \"out_free_file\", which will\nrelease the file resource when \"interp_elf_ex\" failed to allocate\nmemory."
    }
  ],
  "lastModified": "2026-06-17T05:23:36.650",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1757FB8B-1522-4491-866E-95FE5C320F32",
              "versionEndExcluding": "5.10.153",
              "versionStartIncluding": "5.7"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "756161DE-EFE3-4008-964A-DFE360B188B7",
              "versionEndExcluding": "5.15.77",
              "versionStartIncluding": "5.11"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "65D387F0-209C-4EAD-98BA-C4B430A840C9",
              "versionEndExcluding": "6.0.7",
              "versionStartIncluding": "5.16"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E7E331DA-1FB0-4DEC-91AC-7DA69D461C11"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "17F0B248-42CF-4AE6-A469-BB1BAE7F4705"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}