FKIE_CVE-2024-50058

Vulnerability from fkie_nvd - Published: 2024-10-21 20:15 - Updated: 2026-06-17 08:03
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2fe399bb8efd0d325ab1138cf8e3ecf23a39e96d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/399927f0f875b93f3d5a0336d382ba48b8671eb2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/602babaa84d627923713acaf5f7e9a4369e77473Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/76ed24a34223bb2c6b6162e1d8389ec4e602a290Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d7b5876a6e74cdf8468a478be6b23f2f5464ac7a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e418d91195d29d5f9c9685ff309b92b04b41dc40Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
0b142b55-0307-4c5a-b3c9-f314f3fb7c5ehttps://cert-portal.siemens.com/productcert/html/ssa-265688.html
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/tty/serial/serial_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2fe399bb8efd0d325ab1138cf8e3ecf23a39e96d",
              "status": "affected",
              "version": "af224ca2df297440448b9d407d21b50982c6d532",
              "versionType": "git"
            },
            {
              "lessThan": "399927f0f875b93f3d5a0336d382ba48b8671eb2",
              "status": "affected",
              "version": "af224ca2df297440448b9d407d21b50982c6d532",
              "versionType": "git"
            },
            {
              "lessThan": "d7b5876a6e74cdf8468a478be6b23f2f5464ac7a",
              "status": "affected",
              "version": "af224ca2df297440448b9d407d21b50982c6d532",
              "versionType": "git"
            },
            {
              "lessThan": "e418d91195d29d5f9c9685ff309b92b04b41dc40",
              "status": "affected",
              "version": "af224ca2df297440448b9d407d21b50982c6d532",
              "versionType": "git"
            },
            {
              "lessThan": "76ed24a34223bb2c6b6162e1d8389ec4e602a290",
              "status": "affected",
              "version": "af224ca2df297440448b9d407d21b50982c6d532",
              "versionType": "git"
            },
            {
              "lessThan": "602babaa84d627923713acaf5f7e9a4369e77473",
              "status": "affected",
              "version": "af224ca2df297440448b9d407d21b50982c6d532",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/tty/serial/serial_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.7"
            },
            {
              "lessThan": "4.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.229",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.170",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.115",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.57",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "affectedData": [
        {
          "defaultStatus": "unknown",
          "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
          "vendor": "Siemens",
          "versions": [
            {
              "lessThan": "*",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D50B3F37-2EA9-4348-B50C-34DCAAF2076E",
              "versionEndExcluding": "6.6.57",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "AA84D336-CE9A-4535-B901-1AD77EC17C34",
              "versionEndExcluding": "6.11.4",
              "versionStartIncluding": "6.7",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "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."
    }
  ],
  "id": "CVE-2024-50058",
  "lastModified": "2026-06-17T08:03:28.840",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-50058",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-10-22T13:23:14.442818Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-10-21T20:15:17.993",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2fe399bb8efd0d325ab1138cf8e3ecf23a39e96d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/399927f0f875b93f3d5a0336d382ba48b8671eb2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/602babaa84d627923713acaf5f7e9a4369e77473"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/76ed24a34223bb2c6b6162e1d8389ec4e602a290"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d7b5876a6e74cdf8468a478be6b23f2f5464ac7a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/e418d91195d29d5f9c9685ff309b92b04b41dc40"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
    },
    {
      "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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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

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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.


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