Vulnerability-Lookup

GHSA-CF23-XH47-RXHJ

Vulnerability from github – Published: 2025-02-27 03:34 – Updated: 2025-10-23 15:30

Details

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

NFS: Fix potential buffer overflowin nfs_sysfs_link_rpc_client()

name is char[64] where the size of clnt->cl_program->name remains unknown. Invoking strcat() directly will also lead to potential buffer overflow. Change them to strscpy() and strncat() to fix potential issues.

Severity

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2024-54456"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-27T03:15:10Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFS: Fix potential buffer overflowin nfs_sysfs_link_rpc_client()\n\nname is char[64] where the size of clnt-\u003ecl_program-\u003ename remains\nunknown. Invoking strcat() directly will also lead to potential buffer\noverflow. Change them to strscpy() and strncat() to fix potential\nissues.",
  "id": "GHSA-cf23-xh47-rxhj",
  "modified": "2025-10-23T15:30:22Z",
  "published": "2025-02-27T03:34:02Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-54456"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/19b3ca651b4b473878c73539febe477905041442"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/49fd4e34751e90e6df009b70cd0659dc839e7ca8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dd8830779b77f4d1206d28d02ad56a03fc0e78f7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e8e0eb5601d4a6c74c336e3710afe3a0348c469d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2024-54456 (GCVE-0-2024-54456)

Vulnerability from cvelistv5 – Published: 2025-02-27 02:18 – Updated: 2026-08-05 11:44

Title

NFS: Fix potential buffer overflowin nfs_sysfs_link_rpc_client()

Summary

In the Linux kernel, the following vulnerability has been resolved: NFS: Fix potential buffer overflowin nfs_sysfs_link_rpc_client() name is char[64] where the size of clnt->cl_program->name remains unknown. Invoking strcat() directly will also lead to potential buffer overflow. Change them to strscpy() and strncat() to fix potential issues.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/19b3ca651b4b47387…
https://git.kernel.org/stable/c/dd8830779b77f4d12…
https://git.kernel.org/stable/c/e8e0eb5601d4a6c74…
https://git.kernel.org/stable/c/49fd4e34751e90e6d…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: e13b549319a684dd80c4cc25e9567a5c84007e32 , < 19b3ca651b4b473878c73539febe477905041442 (git) Affected: e13b549319a684dd80c4cc25e9567a5c84007e32 , < dd8830779b77f4d1206d28d02ad56a03fc0e78f7 (git) Affected: e13b549319a684dd80c4cc25e9567a5c84007e32 , < e8e0eb5601d4a6c74c336e3710afe3a0348c469d (git) Affected: e13b549319a684dd80c4cc25e9567a5c84007e32 , < 49fd4e34751e90e6df009b70cd0659dc839e7ca8 (git)
Linux	Linux	Affected: 6.5 Unaffected: 0 , < 6.5 (semver) Unaffected: 6.6.79 , ≤ 6.6.* (semver) Unaffected: 6.12.16 , ≤ 6.12.* (semver) Unaffected: 6.13.4 , ≤ 6.13.* (semver) Unaffected: 6.14 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/nfs/sysfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "19b3ca651b4b473878c73539febe477905041442",
              "status": "affected",
              "version": "e13b549319a684dd80c4cc25e9567a5c84007e32",
              "versionType": "git"
            },
            {
              "lessThan": "dd8830779b77f4d1206d28d02ad56a03fc0e78f7",
              "status": "affected",
              "version": "e13b549319a684dd80c4cc25e9567a5c84007e32",
              "versionType": "git"
            },
            {
              "lessThan": "e8e0eb5601d4a6c74c336e3710afe3a0348c469d",
              "status": "affected",
              "version": "e13b549319a684dd80c4cc25e9567a5c84007e32",
              "versionType": "git"
            },
            {
              "lessThan": "49fd4e34751e90e6df009b70cd0659dc839e7ca8",
              "status": "affected",
              "version": "e13b549319a684dd80c4cc25e9567a5c84007e32",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/nfs/sysfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.5"
            },
            {
              "lessThan": "6.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.79",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.13.*",
              "status": "unaffected",
              "version": "6.13.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.14",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.79",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.16",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13.4",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.14",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFS: Fix potential buffer overflowin nfs_sysfs_link_rpc_client()\n\nname is char[64] where the size of clnt-\u003ecl_program-\u003ename remains\nunknown. Invoking strcat() directly will also lead to potential buffer\noverflow. Change them to strscpy() and strncat() to fix potential\nissues."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/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 in the NFS *client* and is reached through local filesystem operations \u2014 a `mount -t nfs` or, without any privilege, ordinary path traversal that triggers `nfs_d_automount` on an already-mounted share. Although a malicious/compromised NFS server can drive the referral submount that reaches the function, the write itself is performed from local kernel-side data, so Local is the correct vector.\nAC:L - The code path is executed deterministically on every NFS mount and every crossmnt/referral submount, with no race, no timing window, and no memory-layout precondition outside the attacker\u0027s influence.\nPR:L - `nfs_clone_server()` \u2192 `nfs_sysfs_link_rpc_client()` is invoked from the `d_automount` dentry op on plain path traversal, so any unprivileged local user with access to an NFS mount (a very common configuration \u2014 autofs/NFS home directories) reaches the function with no capability check.\nUI:N - Automount-driven submounts happen automatically as a side effect of the attacker\u0027s own directory traversal; no separate victim action is required.\nS:U - Stack corruption in the NFS client stays within the kernel\u0027s own security authority \u2014 no VM, IOMMU, or sandbox boundary is crossed.\nC:H - An out-of-bounds write past a 64-byte kernel stack buffer overwrites adjacent frame state and, once leveraged into a control-flow or pointer primitive, permits disclosure of arbitrary kernel memory. Per kernel guidance, memory corruption that can be leveraged for info disclosure is scored High.\nI:H - Unbounded `strcpy`/`strcat` into a stack array is a classic out-of-bounds write reaching saved registers and the return address, which is directly exploitable for control-flow hijack and arbitrary kernel modification; OOB writes are scored High.\nA:H - Overwriting the saved return address or stack canary causes a stack-protector panic or an oops on return, crashing the kernel."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:44:49.902Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/19b3ca651b4b473878c73539febe477905041442"
        },
        {
          "url": "https://git.kernel.org/stable/c/dd8830779b77f4d1206d28d02ad56a03fc0e78f7"
        },
        {
          "url": "https://git.kernel.org/stable/c/e8e0eb5601d4a6c74c336e3710afe3a0348c469d"
        },
        {
          "url": "https://git.kernel.org/stable/c/49fd4e34751e90e6df009b70cd0659dc839e7ca8"
        }
      ],
      "title": "NFS: Fix potential buffer overflowin nfs_sysfs_link_rpc_client()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-54456",
    "datePublished": "2025-02-27T02:18:08.143Z",
    "dateReserved": "2025-02-27T02:16:34.098Z",
    "dateUpdated": "2026-08-05T11:44:49.902Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-CF23-XH47-RXHJ

CVE-2024-54456 (GCVE-0-2024-54456)

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