ghsa-jhfq-cfj3-rm7v
Vulnerability from github
Published
2025-07-04 15:31
Modified
2025-07-04 15:31
Details

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

tipc: fix null-ptr-deref when acquiring remote ip of ethernet bearer

The reproduction steps: 1. create a tun interface 2. enable l2 bearer 3. TIPC_NL_UDP_GET_REMOTEIP with media name set to tun

tipc: Started in network mode tipc: Node identity 8af312d38a21, cluster identity 4711 tipc: Enabled bearer , priority 1 Oops: general protection fault KASAN: null-ptr-deref in range CPU: 1 UID: 1000 PID: 559 Comm: poc Not tainted 6.16.0-rc1+ #117 PREEMPT Hardware name: QEMU Ubuntu 24.04 PC RIP: 0010:tipc_udp_nl_dump_remoteip+0x4a4/0x8f0

the ub was in fact a struct dev.

when bid != 0 && skip_cnt != 0, bearer_list[bid] may be NULL or other media when other thread changes it.

fix this by checking media_id.

Show details on source website


{
  "affected": [],
  "aliases": [
    "CVE-2025-38184"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-04T14:15:25Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: fix null-ptr-deref when acquiring remote ip of ethernet bearer\n\nThe reproduction steps:\n1. create a tun interface\n2. enable l2 bearer\n3. TIPC_NL_UDP_GET_REMOTEIP with media name set to tun\n\ntipc: Started in network mode\ntipc: Node identity 8af312d38a21, cluster identity 4711\ntipc: Enabled bearer \u003ceth:syz_tun\u003e, priority 1\nOops: general protection fault\nKASAN: null-ptr-deref in range\nCPU: 1 UID: 1000 PID: 559 Comm: poc Not tainted 6.16.0-rc1+ #117 PREEMPT\nHardware name: QEMU Ubuntu 24.04 PC\nRIP: 0010:tipc_udp_nl_dump_remoteip+0x4a4/0x8f0\n\nthe ub was in fact a struct dev.\n\nwhen bid != 0 \u0026\u0026 skip_cnt != 0, bearer_list[bid] may be NULL or\nother media when other thread changes it.\n\nfix this by checking media_id.",
  "id": "GHSA-jhfq-cfj3-rm7v",
  "modified": "2025-07-04T15:31:08Z",
  "published": "2025-07-04T15:31:08Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38184"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/05d332ba075753d569d66333d62d60fff5f57ad8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0d3d91c3500f0c480e016faa4e2259c588616e59"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0f4a72fb266e48dbe928e1d936eab149e4ac3e1b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3998283e4c32c0fe69edd59b0876c193f50abce6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8595350615f952fcf8bc861464a6bf6b1129af50"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c2e17984752b9131061d1a2ca1199da2706337fd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d3dfe821dfe091c0045044343c8d86596d66e2cf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f82727adcf2992822e12198792af450a76ebd5ef"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

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.


Loading…

Loading…