Medium 5.5Published Oct 21, 2024

CVE-2024-50058serial: protect uart_port_dtr_rts() in uart_shutdown() too

Updated under an hour ago (Oct 27, 2026, 7:10 PM ET)

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It affects Linux and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In 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.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from af224ca2df297440448b9d407d21b50982c6d532 before 2fe399bb8efd0d325ab1138cf8e3ecf23a39e96d; from af224ca2df297440448b9d407d21b50982c6d532 before 399927f0f875b93f3d5a0336d382ba48b8671eb2; from af224ca2df297440448b9d407d21b50982c6d532 before d7b5876a6e74cdf8468a478be6b23f2f5464ac7a; from af224ca2df297440448b9d407d21b50982c6d532 before e418d91195d29d5f9c9685ff309b92b04b41dc40; from af224ca2df297440448b9d407d21b50982c6d532 before 76ed24a34223bb2c6b6162e1d8389ec4e602a290; from af224ca2df297440448b9d407d21b50982c6d532 before 602babaa84d627923713acaf5f7e9a4369e77473	CNA record
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	before V1.1.1	CISA ADP
linux linux_kernel linux:linux_kernel	before 6.6.57; from 6.7 before 6.11.4	NVD

References

References

https://git.kernel.org/stable/c/2fe399bb8efd0d325ab1138cf8e3ecf23a39e96d
https://git.kernel.org/stable/c/399927f0f875b93f3d5a0336d382ba48b8671eb2
https://git.kernel.org/stable/c/d7b5876a6e74cdf8468a478be6b23f2f5464ac7a
https://git.kernel.org/stable/c/e418d91195d29d5f9c9685ff309b92b04b41dc40	patch
https://git.kernel.org/stable/c/76ed24a34223bb2c6b6162e1d8389ec4e602a290	patch
https://git.kernel.org/stable/c/602babaa84d627923713acaf5f7e9a4369e77473	patch
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
https://cert-portal.siemens.com/productcert/html/ssa-265688.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.