Vulnerability-Lookup

GHSA-H9JC-64QV-H9CG

Vulnerability from github – Published: 2026-03-09 18:31 – Updated: 2026-03-13 21:31

Details

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)").

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{
  "affected": [],
  "aliases": [
    "CVE-2024-14027"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-09T16:16:14Z",
    "severity": null
  },
  "details": "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)\").",
  "id": "GHSA-h9jc-64qv-h9cg",
  "modified": "2026-03-13T21:31:41Z",
  "published": "2026-03-09T18:31:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-14027"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a71874379ec8c6e788a61d71b3ad014a8d9a5c08"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d151b94967c8247005435b63fc60f8f4baa320da"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2024-14027 (GCVE-0-2024-14027)

Vulnerability from cvelistv5 – Published: 2026-03-09 15:51 – Updated: 2026-03-13 16:36

Title

xattr: switch to CLASS(fd)

Summary

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 ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/d151b94967c824700…
	https://git.kernel.org/stable/c/a71874379ec8c6e78…

Impacted products

Vendor

Product

Version

Linux

Affected: c3a5e3e872f3688ae0dc57bb78ca633921d96a91 , < d151b94967c8247005435b63fc60f8f4baa320da (git)
Affected: c3a5e3e872f3688ae0dc57bb78ca633921d96a91 , < a71874379ec8c6e788a61d71b3ad014a8d9a5c08 (git)
Affected: c03185f4a23e7f89d84c9981091770e876e64480 (git)
Affected: 8d5863cb33aa424fc27115ee945ad6b96ae2facb (git)

Linux

Affected: 6.11
Unaffected: 0 , < 6.11 (semver)
Unaffected: 6.12.77 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/xattr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d151b94967c8247005435b63fc60f8f4baa320da",
              "status": "affected",
              "version": "c3a5e3e872f3688ae0dc57bb78ca633921d96a91",
              "versionType": "git"
            },
            {
              "lessThan": "a71874379ec8c6e788a61d71b3ad014a8d9a5c08",
              "status": "affected",
              "version": "c3a5e3e872f3688ae0dc57bb78ca633921d96a91",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "c03185f4a23e7f89d84c9981091770e876e64480",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "8d5863cb33aa424fc27115ee945ad6b96ae2facb",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/xattr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.11"
            },
            {
              "lessThan": "6.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.77",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.77",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.6.51",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.10.10",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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)\")."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-13T16:36:15.139Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d151b94967c8247005435b63fc60f8f4baa320da"
        },
        {
          "url": "https://git.kernel.org/stable/c/a71874379ec8c6e788a61d71b3ad014a8d9a5c08"
        }
      ],
      "title": "xattr: switch to CLASS(fd)",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-14027",
    "datePublished": "2026-03-09T15:51:12.634Z",
    "dateReserved": "2026-03-09T15:47:22.723Z",
    "dateUpdated": "2026-03-13T16:36:15.139Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-H9JC-64QV-H9CG

CVE-2024-14027 (GCVE-0-2024-14027)

Tags

Sightings

Nomenclature