ghsa-8x6x-mcww-82p3
Vulnerability from github
Published
2025-03-18 21:31
Modified
2025-03-18 21:31
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details

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

cifs: potential buffer overflow in handling symlinks

Smatch printed a warning: arch/x86/crypto/poly1305_glue.c:198 poly1305_update_arch() error: __memcpy() 'dctx->buf' too small (16 vs u32max)

It's caused because Smatch marks 'link_len' as untrusted since it comes from sscanf(). Add a check to ensure that 'link_len' is not larger than the size of the 'link_str' buffer.

Show details on source website

To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2022-49058"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-120"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:00:43Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: potential buffer overflow in handling symlinks\n\nSmatch printed a warning:\n\tarch/x86/crypto/poly1305_glue.c:198 poly1305_update_arch() error:\n\t__memcpy() \u0027dctx-\u003ebuf\u0027 too small (16 vs u32max)\n\nIt\u0027s caused because Smatch marks \u0027link_len\u0027 as untrusted since it comes\nfrom sscanf(). Add a check to ensure that \u0027link_len\u0027 is not larger than\nthe size of the \u0027link_str\u0027 buffer.",
  "id": "GHSA-8x6x-mcww-82p3",
  "modified": "2025-03-18T21:31:59Z",
  "published": "2025-03-18T21:31:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49058"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1316c28569a80ab3596eeab05bf5e01991e7e739"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/22d658c6c5affed10c8907e67160cef0b6c92186"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3e582749e742e662a8e9bb37cffac62dccaaa1e2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4e166a41180be2f1e66bbb6d46448e80a9a5ec05"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/515e7ba11ef043d6febe69389949c8ef5f25e9d0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/64c4a37ac04eeb43c42d272f6e6c8c12bfcf4304"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9901b07ba42b39266b34a888e48d7306fd707bee"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eb5f51756944735ac70cd8bb38637cc202e29c91"
    }
  ],
  "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"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.