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

Vulnerability from cvelistv5 – Published: 2024-10-21 19:39 – Updated: 2026-05-12 12:00
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.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-22 13:23 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
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)
guessed Create a notification for this product.
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)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
guessed Create a notification for this product.
Show details on NVD website
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            "value": "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."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: serial: proteger uart_port_dtr_rts() en uart_shutdown() tambi\u00e9n El commit af224ca2df29 (serial: core: Prevenir el acceso inseguro al puerto uart, parte 3) agreg\u00f3 algunas comprobaciones uport == NULL. Agreg\u00f3 una a uart_shutdown(), por lo que el commit asume que uport puede ser NULL all\u00ed. Pero justo despu\u00e9s de esa protecci\u00f3n, hay una llamada \"uart_port_dtr_rts(uport, false);\" sin protecci\u00f3n. Eso se invoca solo si HUPCL est\u00e1 configurado, por lo que supongo que esa es la raz\u00f3n por la que no vemos muchos de estos informes. O no puede ser NULL en este punto en absoluto por alguna raz\u00f3n :P. Hasta que se investigue lo anterior, mant\u00e9ngase del lado seguro y mueva esta desreferencia al if tambi\u00e9n. Obtuve esta inconsistencia de Coverity bajo CID 1585130. Gracias."
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                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
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                "scope": "UNCHANGED",
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                "version": "2.0.3"
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                "value": "CWE-476"
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            "source": "nvd@nist.gov",
            "type": "Primary"
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      "product_status:fixed": "305",
      "product_status:known_affected": "98",
      "product_status:known_not_affected": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: serial: protect uart_port_dtr_rts() in uart_shutdown() too",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-50058.json",
      "version": "3"
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      "title": "SUSE CVE CVE-2024-50058",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-50058.json",
      "version": "73"
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    "vulnrichment": {
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            "title": "CVE Program Container"
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}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.