CVE-2024-50058 (GCVE-0-2024-50058)

Vulnerability from cvelistv5 – Published: 2024-10-21 19:39 – Updated: 2026-01-05 10:54
VLAI?
Title
serial: protect uart_port_dtr_rts() in uart_shutdown() too
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: af224ca2df297440448b9d407d21b50982c6d532 , < 2fe399bb8efd0d325ab1138cf8e3ecf23a39e96d (git)
Affected: af224ca2df297440448b9d407d21b50982c6d532 , < 399927f0f875b93f3d5a0336d382ba48b8671eb2 (git)
Affected: af224ca2df297440448b9d407d21b50982c6d532 , < d7b5876a6e74cdf8468a478be6b23f2f5464ac7a (git)
Affected: af224ca2df297440448b9d407d21b50982c6d532 , < e418d91195d29d5f9c9685ff309b92b04b41dc40 (git)
Affected: af224ca2df297440448b9d407d21b50982c6d532 , < 76ed24a34223bb2c6b6162e1d8389ec4e602a290 (git)
Affected: af224ca2df297440448b9d407d21b50982c6d532 , < 602babaa84d627923713acaf5f7e9a4369e77473 (git)
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    Linux Linux Affected: 4.7
Unaffected: 0 , < 4.7 (semver)
Unaffected: 5.10.229 , ≤ 5.10.* (semver)
Unaffected: 5.15.170 , ≤ 5.15.* (semver)
Unaffected: 6.1.115 , ≤ 6.1.* (semver)
Unaffected: 6.6.57 , ≤ 6.6.* (semver)
Unaffected: 6.11.4 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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