FKIE_CVE-2023-52618

Vulnerability from fkie_nvd - Published: 2024-03-18 11:15 - Updated: 2026-06-17 06:43
Severity
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Summary
In the Linux kernel, the following vulnerability has been resolved: block/rnbd-srv: Check for unlikely string overflow Since "dev_search_path" can technically be as large as PATH_MAX, there was a risk of truncation when copying it and a second string into "full_path" since it was also PATH_MAX sized. The W=1 builds were reporting this warning: drivers/block/rnbd/rnbd-srv.c: In function 'process_msg_open.isra': drivers/block/rnbd/rnbd-srv.c:616:51: warning: '%s' directive output may be truncated writing up to 254 bytes into a region of size between 0 and 4095 [-Wformat-truncation=] 616 | snprintf(full_path, PATH_MAX, "%s/%s", | ^~ In function 'rnbd_srv_get_full_path', inlined from 'process_msg_open.isra' at drivers/block/rnbd/rnbd-srv.c:721:14: drivers/block/rnbd/rnbd-srv.c:616:17: note: 'snprintf' output between 2 and 4351 bytes into a destination of size 4096 616 | snprintf(full_path, PATH_MAX, "%s/%s", | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 617 | dev_search_path, dev_name); | ~~~~~~~~~~~~~~~~~~~~~~~~~~ To fix this, unconditionally check for truncation (as was already done for the case where "%SESSNAME%" was present).
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5b9ea86e662035a886ccb5c76d56793cba618827Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/95bc866c11974d3e4a9d922275ea8127ff809cf7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9e4bf6a08d1e127bcc4bd72557f2dfafc6bc7f41Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a2c6206f18104fba7f887bf4dbbfe4c41adc4339Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/af7bbdac89739e2e7380387fda598848d3b7010fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f6abd5e17da33eba15df2bddc93413e76c2b55f7Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/5b9ea86e662035a886ccb5c76d56793cba618827Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/95bc866c11974d3e4a9d922275ea8127ff809cf7Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/9e4bf6a08d1e127bcc4bd72557f2dfafc6bc7f41Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a2c6206f18104fba7f887bf4dbbfe4c41adc4339Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/af7bbdac89739e2e7380387fda598848d3b7010fPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f6abd5e17da33eba15df2bddc93413e76c2b55f7Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlMailing List, Third Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
debian debian_linux 10.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
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          "product": "Linux",
          "programFiles": [
            "drivers/block/rnbd/rnbd-srv.c"
          ],
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            },
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              "status": "affected",
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/block/rnbd/rnbd-srv.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "5.8"
            },
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              "version": "0",
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              "status": "unaffected",
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              "status": "unaffected",
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              "versionType": "semver"
            },
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              "lessThanOrEqual": "*",
              "status": "unaffected",
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              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
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        }
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock/rnbd-srv: Check for unlikely string overflow\n\nSince \"dev_search_path\" can technically be as large as PATH_MAX,\nthere was a risk of truncation when copying it and a second string\ninto \"full_path\" since it was also PATH_MAX sized. The W=1 builds were\nreporting this warning:\n\ndrivers/block/rnbd/rnbd-srv.c: In function \u0027process_msg_open.isra\u0027:\ndrivers/block/rnbd/rnbd-srv.c:616:51: warning: \u0027%s\u0027 directive output may be truncated writing up to 254 bytes into a region of size between 0 and 4095 [-Wformat-truncation=]\n  616 |                 snprintf(full_path, PATH_MAX, \"%s/%s\",\n      |                                                   ^~\nIn function \u0027rnbd_srv_get_full_path\u0027,\n    inlined from \u0027process_msg_open.isra\u0027 at drivers/block/rnbd/rnbd-srv.c:721:14: drivers/block/rnbd/rnbd-srv.c:616:17: note: \u0027snprintf\u0027 output between 2 and 4351 bytes into a destination of size 4096\n  616 |                 snprintf(full_path, PATH_MAX, \"%s/%s\",\n      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n  617 |                          dev_search_path, dev_name);\n      |                          ~~~~~~~~~~~~~~~~~~~~~~~~~~\n\nTo fix this, unconditionally check for truncation (as was already done\nfor the case where \"%SESSNAME%\" was present)."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: block/rnbd-srv: Comprueba si hay un desbordamiento de cadena improbable. Dado que \"dev_search_path\" t\u00e9cnicamente puede ser tan grande como PATH_MAX, exist\u00eda el riesgo de truncamiento al copiarlo y una segunda cadena en \" full_path\" ya que tambi\u00e9n ten\u00eda un tama\u00f1o PATH_MAX. Las compilaciones W=1 informaban esta advertencia: drivers/block/rnbd/rnbd-srv.c: En funci\u00f3n \u0027process_msg_open.isra\u0027: drivers/block/rnbd/rnbd-srv.c:616:51: advertencia: \u0027% La salida de la directiva s se puede truncar escribiendo hasta 254 bytes en una regi\u00f3n de tama\u00f1o entre 0 y 4095 [-Wformat-truncation=] 616 | snprintf(full_path, PATH_MAX, \"%s/%s\", | ^~ En la funci\u00f3n \u0027rnbd_srv_get_full_path\u0027, insertada desde \u0027process_msg_open.isra\u0027 en drivers/block/rnbd/rnbd-srv.c:721:14: drivers/block /rnbd/rnbd-srv.c:616:17: nota: \u0027snprintf\u0027 genera entre 2 y 4351 bytes en un destino de tama\u00f1o 4096 616 | snprintf(full_path, PATH_MAX, \"%s/%s\", | ^~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 617 | dev_search_path, dev_name); | ~~~~~~~ ~~~~~~~~~~~~~~~~~~~ Para solucionar este problema, verifique incondicionalmente el truncamiento (como ya se hizo en el caso en el que \"%SESSNAME%\" estaba presente)."
    }
  ],
  "id": "CVE-2023-52618",
  "lastModified": "2026-06-17T06:43:10.573",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-52618",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-03-19T15:51:11.544669Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-03-18T11:15:09.110",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/5b9ea86e662035a886ccb5c76d56793cba618827"
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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    },
    {
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "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.


Detection rules are retrieved from Rulezet.