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CVE-2024-14027

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: fs/xattr: missing fdput() in fremovexattr error path In the Linux kernel, the fremovexattr() syscall calls fdget() to acquire a file reference but returns early without calling fdput() when strncpy_from_user() fails on the name argument. In multi-threaded processes where fdget() takes the slow path, this permanently leaks one file reference per call, pinning the struct file and associated kernel objects in memory. An unprivileged local user can exploit this to cause kernel memory exhaustion. The issue was inadvertently fixed by commit a71874379ec8 ("xattr: switch to CLASS(fd)").

Severity
MEDIUM
CVSS score
5.5 (v3.1)
Vulnerability status
Analyzed
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-03-09 16:16:14.313000
Last modified
2026-11-05 21:17:32.583000
View original CVE JSON 
{
  "id": "CVE-2024-14027",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-03-09T16:16:14.313",
  "lastModified": "2026-11-05T21:17:32.583",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/xattr: missing fdput() in fremovexattr error path\n\nIn the Linux kernel, the fremovexattr() syscall calls fdget() to acquire a\nfile reference but returns early without calling fdput() when\nstrncpy_from_user() fails on the name argument. In multi-threaded processes\nwhere fdget() takes the slow path, this permanently leaks one\nfile reference per call, pinning the struct file and associated kernel\nobjects in memory. An unprivileged local user can exploit this to cause\nkernel memory exhaustion. The issue was inadvertently fixed by commit\na71874379ec8 (\"xattr: switch to CLASS(fd)\")."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nfs/xattr: falta fdput() en la ruta de error de fremovexattr\n\nEn el kernel de Linux, la llamada al sistema fremovexattr() llama a fdget() para adquirir una referencia de archivo, pero retorna prematuramente sin llamar a fdput() cuando strncpy_from_user() falla en el argumento 'name'. En procesos multihilo donde fdget() toma la ruta lenta, esto fuga permanentemente una referencia de archivo por llamada, fijando la estructura 'struct file' y los objetos del kernel asociados en memoria. Un usuario local sin privilegios puede explotar esto para causar agotamiento de la memoria del kernel. El problema fue corregido inadvertidamente por el commit a71874379ec8 ('xattr: switch to CLASS(fd)')."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
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          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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              "versionType": "git",
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            {
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          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
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              "version": "6.11",
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              "version": "0",
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              "versionType": "semver",
              "status": "unaffected"
            },
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              "version": "6.6.133",
              "lessThanOrEqual": "6.6.*",
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              "status": "unaffected"
            },
            {
              "version": "6.12.77",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.13",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-11-05T20:27:26.804118Z",
          "id": "CVE-2024-14027",
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              "exploitation": "none"
            },
            {
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              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "6.6.51",
              "versionEndExcluding": "6.6.133",
              "matchCriteriaId": "B87E886F-56D4-4D9C-AE13-088E1851614A"
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              "matchCriteriaId": "3F0B9738-892B-4C33-A6BE-FBE212579E9B"
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  "references": [
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      "url": "https://git.kernel.org/stable/c/9a3a2ae5efbbcaed37551218abed94e23c537157",
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}