ghsa-rhhp-94ch-9rf5
Vulnerability from github
Published
2024-11-09 12:30
Modified
2024-11-13 21:30
Severity ?
4.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

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

sock_map: fix a NULL pointer dereference in sock_map_link_update_prog()

The following race condition could trigger a NULL pointer dereference:

sock_map_link_detach(): sock_map_link_update_prog(): mutex_lock(&sockmap_mutex); ... sockmap_link->map = NULL; mutex_unlock(&sockmap_mutex); mutex_lock(&sockmap_mutex); ... sock_map_prog_link_lookup(sockmap_link->map); mutex_unlock(&sockmap_mutex);

Fix it by adding a NULL pointer check. In this specific case, it makes no sense to update a link which is being released.

Show details on source website

To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2024-50260"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-11-09T11:15:11Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsock_map: fix a NULL pointer dereference in sock_map_link_update_prog()\n\nThe following race condition could trigger a NULL pointer dereference:\n\nsock_map_link_detach():\t\tsock_map_link_update_prog():\n   mutex_lock(\u0026sockmap_mutex);\n   ...\n   sockmap_link-\u003emap = NULL;\n   mutex_unlock(\u0026sockmap_mutex);\n   \t\t\t\t   mutex_lock(\u0026sockmap_mutex);\n\t\t\t\t   ...\n\t\t\t\t   sock_map_prog_link_lookup(sockmap_link-\u003emap);\n\t\t\t\t   mutex_unlock(\u0026sockmap_mutex);\n   \u003ccontinue\u003e\n\nFix it by adding a NULL pointer check. In this specific case, it makes\nno sense to update a link which is being released.",
  "id": "GHSA-rhhp-94ch-9rf5",
  "modified": "2024-11-13T21:30:32Z",
  "published": "2024-11-09T12:30:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-50260"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/740be3b9a6d73336f8c7d540842d0831dc7a808b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9afe35fdda16e09d5bd3c49a68ba8c680dd678bd"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/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.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • 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.