ghsa-q52q-f54c-xmvp
Vulnerability from github
Published
2024-02-26 18:30
Modified
2024-04-17 21:30
Severity
Details
In the Linux kernel, the following vulnerability has been resolved:
net: hso: fix NULL-deref on disconnect regression
Commit 8a12f8836145 ("net: hso: fix null-ptr-deref during tty device unregistration") fixed the racy minor allocation reported by syzbot, but introduced an unconditional NULL-pointer dereference on every disconnect instead.
Specifically, the serial device table must no longer be accessed after the minor has been released by hso_serial_tty_unregister().
{
"affected": [],
"aliases": [
"CVE-2021-46905"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-26T16:27:45Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: hso: fix NULL-deref on disconnect regression\n\nCommit 8a12f8836145 (\"net: hso: fix null-ptr-deref during tty device\nunregistration\") fixed the racy minor allocation reported by syzbot, but\nintroduced an unconditional NULL-pointer dereference on every disconnect\ninstead.\n\nSpecifically, the serial device table must no longer be accessed after\nthe minor has been released by hso_serial_tty_unregister().",
"id": "GHSA-q52q-f54c-xmvp",
"modified": "2024-04-17T21:30:45Z",
"published": "2024-02-26T18:30:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-46905"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0c71d4c89559f72cec2592d078681a843bce570e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0f000005da31f6947f843ce6b3e3a960540c6e00"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/24b699bea7553fc0b98dad9d864befb6005ac7f1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2ad5692db72874f02b9ad551d26345437ea4f7f3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/41c44e1f3112d7265dae522c026399b2a42d19ef"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5871761c5f0f20d6e98bf3b6bd7486d857589554"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5c17cfe155d21954b4c7e2a78fa771cebcd86725"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/90642ee9eb581a13569b1c0bd57e85d962215273"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d7fad2ce15bdbbd0fec3ebe999fd7cab2267f53e"
}
],
"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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