ghsa-c8r4-j2q4-mjgj
Vulnerability from github
Published
2025-05-01 15:31
Modified
2025-05-07 15:31
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

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

bpftool: Fix NULL pointer dereference when pin {PROG, MAP, LINK} without FILE

When using bpftool to pin {PROG, MAP, LINK} without FILE, segmentation fault will occur. The reson is that the lack of FILE will cause strlen to trigger NULL pointer dereference. The corresponding stacktrace is shown below:

do_pin do_pin_any do_pin_fd mount_bpffs_for_pin strlen(name) <- NULL pointer dereference

Fix it by adding validation to the common process.

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49875"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-01T15:16:12Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpftool: Fix NULL pointer dereference when pin {PROG, MAP, LINK} without FILE\n\nWhen using bpftool to pin {PROG, MAP, LINK} without FILE,\nsegmentation fault will occur. The reson is that the lack\nof FILE will cause strlen to trigger NULL pointer dereference.\nThe corresponding stacktrace is shown below:\n\ndo_pin\n  do_pin_any\n    do_pin_fd\n      mount_bpffs_for_pin\n        strlen(name) \u003c- NULL pointer dereference\n\nFix it by adding validation to the common process.",
  "id": "GHSA-c8r4-j2q4-mjgj",
  "modified": "2025-05-07T15:31:25Z",
  "published": "2025-05-01T15:31:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49875"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/34de8e6e0e1f66e431abf4123934a2581cb5f133"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6dcdd1b68b7f9333d48d48fc77b75e7f235f6a4a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8c80b2fca4112d724dde477aed13f7b0510a2792"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/da5161ba94c5e9182c301dd4f09c94f715c068bd"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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