ghsa-jww8-jcqp-pmjm
Vulnerability from github
Published
2024-10-21 18:30
Modified
2024-11-13 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:

sctp: set sk_state back to CLOSED if autobind fails in sctp_listen_start

In sctp_listen_start() invoked by sctp_inet_listen(), it should set the sk_state back to CLOSED if sctp_autobind() fails due to whatever reason.

Otherwise, next time when calling sctp_inet_listen(), if sctp_sk(sk)->reuse is already set via setsockopt(SCTP_REUSE_PORT), sctp_sk(sk)->bind_hash will be dereferenced as sk_state is LISTENING, which causes a crash as bind_hash is NULL.

KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] RIP: 0010:sctp_inet_listen+0x7f0/0xa20 net/sctp/socket.c:8617 Call Trace: __sys_listen_socket net/socket.c:1883 [inline] __sys_listen+0x1b7/0x230 net/socket.c:1894 __do_sys_listen net/socket.c:1902 [inline]

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{
  "affected": [],
  "aliases": [
    "CVE-2024-49944"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T18:15:15Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: set sk_state back to CLOSED if autobind fails in sctp_listen_start\n\nIn sctp_listen_start() invoked by sctp_inet_listen(), it should set the\nsk_state back to CLOSED if sctp_autobind() fails due to whatever reason.\n\nOtherwise, next time when calling sctp_inet_listen(), if sctp_sk(sk)-\u003ereuse\nis already set via setsockopt(SCTP_REUSE_PORT), sctp_sk(sk)-\u003ebind_hash will\nbe dereferenced as sk_state is LISTENING, which causes a crash as bind_hash\nis NULL.\n\n  KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\n  RIP: 0010:sctp_inet_listen+0x7f0/0xa20 net/sctp/socket.c:8617\n  Call Trace:\n   \u003cTASK\u003e\n   __sys_listen_socket net/socket.c:1883 [inline]\n   __sys_listen+0x1b7/0x230 net/socket.c:1894\n   __do_sys_listen net/socket.c:1902 [inline]",
  "id": "GHSA-jww8-jcqp-pmjm",
  "modified": "2024-11-13T15:31:37Z",
  "published": "2024-10-21T18:30:58Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49944"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0e4e2e60556c6ed00e8450b720f106a268d23062"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7f64cb5b4d8c872296eda0fdce3bcf099eec7aa7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/89bbead9d897c77d0b566349c8643030ff2abeba"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8beee4d8dee76b67c75dc91fd8185d91e845c160"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9230a59eda0878d7ecaa901d876aec76f57bd455"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dd70c8a89ef99c3d53127fe19e51ef47c3f860fa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e7a8442195e8ebd97df467ce4742980ab57edcce"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e914bf68dab88815a7ae7b7a3a5e8913c8ff14a5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f032e1dac30b3376c7d6026fb01a8c403c47a80d"
    }
  ],
  "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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