GHSA-V8H5-CGHP-Q3C4
Vulnerability from github – Published: 2024-10-21 21:30 – Updated: 2026-05-12 15:30In the Linux kernel, the following vulnerability has been resolved:
serial: protect uart_port_dtr_rts() in uart_shutdown() too
Commit af224ca2df29 (serial: core: Prevent unsafe uart port access, part 3) added few uport == NULL checks. It added one to uart_shutdown(), so the commit assumes, uport can be NULL in there. But right after that protection, there is an unprotected "uart_port_dtr_rts(uport, false);" call. That is invoked only if HUPCL is set, so I assume that is the reason why we do not see lots of these reports.
Or it cannot be NULL at this point at all for some reason :P.
Until the above is investigated, stay on the safe side and move this dereference to the if too.
I got this inconsistency from Coverity under CID 1585130. Thanks.
{
"affected": [],
"aliases": [
"CVE-2024-50058"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-10-21T20:15:17Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nserial: protect uart_port_dtr_rts() in uart_shutdown() too\n\nCommit af224ca2df29 (serial: core: Prevent unsafe uart port access, part\n3) added few uport == NULL checks. It added one to uart_shutdown(), so\nthe commit assumes, uport can be NULL in there. But right after that\nprotection, there is an unprotected \"uart_port_dtr_rts(uport, false);\"\ncall. That is invoked only if HUPCL is set, so I assume that is the\nreason why we do not see lots of these reports.\n\nOr it cannot be NULL at this point at all for some reason :P.\n\nUntil the above is investigated, stay on the safe side and move this\ndereference to the if too.\n\nI got this inconsistency from Coverity under CID 1585130. Thanks.",
"id": "GHSA-v8h5-cghp-q3c4",
"modified": "2026-05-12T15:30:39Z",
"published": "2024-10-21T21:30:54Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-50058"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2fe399bb8efd0d325ab1138cf8e3ecf23a39e96d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/399927f0f875b93f3d5a0336d382ba48b8671eb2"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/602babaa84d627923713acaf5f7e9a4369e77473"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/76ed24a34223bb2c6b6162e1d8389ec4e602a290"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d7b5876a6e74cdf8468a478be6b23f2f5464ac7a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e418d91195d29d5f9c9685ff309b92b04b41dc40"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
}
],
"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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