ghsa-jww8-jcqp-pmjm
Vulnerability from github
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]
{
"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"
}
]
}
Sightings
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