FKIE_CVE-2020-25641

Vulnerability from fkie_nvd - Published: 2020-10-06 14:15 - Updated: 2026-06-17 03:07
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
A flaw was found in the Linux kernel's implementation of biovecs in versions before 5.9-rc7. A zero-length biovec request issued by the block subsystem could cause the kernel to enter an infinite loop, causing a denial of service. This flaw allows a local attacker with basic privileges to issue requests to a block device, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
References
secalert@redhat.comhttp://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.htmlMailing List, Third Party Advisory
secalert@redhat.comhttp://lists.opensuse.org/opensuse-security-announce/2020-10/msg00042.htmlMailing List, Third Party Advisory
secalert@redhat.comhttp://www.openwall.com/lists/oss-security/2020/10/06/9Mailing List, Third Party Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1881424Issue Tracking, Patch, Third Party Advisory
secalert@redhat.comhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7e24969022cbd61ddc586f14824fc205661bb124Mailing List, Patch, Vendor Advisory
secalert@redhat.comhttps://lists.debian.org/debian-lts-announce/2020/10/msg00032.htmlMailing List, Third Party Advisory
secalert@redhat.comhttps://lists.debian.org/debian-lts-announce/2020/10/msg00034.htmlMailing List, Third Party Advisory
secalert@redhat.comhttps://usn.ubuntu.com/4576-1/Third Party Advisory
secalert@redhat.comhttps://www.kernel.org/doc/html/latest/block/biovecs.htmlVendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00042.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2020/10/06/9Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1881424Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7e24969022cbd61ddc586f14824fc205661bb124Mailing List, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2020/10/msg00032.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2020/10/msg00034.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4576-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.kernel.org/doc/html/latest/block/biovecs.htmlVendor Advisory
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel 5.9.0
linux linux_kernel 5.9.0
linux linux_kernel 5.9.0
linux linux_kernel 5.9.0
linux linux_kernel 5.9.0
linux linux_kernel 5.9.0
linux linux_kernel 5.9.0
redhat enterprise_linux 7.0
redhat enterprise_linux 8.0
opensuse leap 15.1
opensuse leap 15.2
debian debian_linux 9.0
canonical ubuntu_linux 18.04
canonical ubuntu_linux 20.04
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in the Linux kernel\u0027s implementation of biovecs in versions before 5.9-rc7. A zero-length biovec request issued by the block subsystem could cause the kernel to enter an infinite loop, causing a denial of service. This flaw allows a local attacker with basic privileges to issue requests to a block device, resulting in a denial of service. The highest threat from this vulnerability is to system availability."
    },
    {
      "lang": "es",
      "value": "Se encontr\u00f3 un fallo en la implementaci\u00f3n de biovecs del kernel de Linux en versiones anteriores a 5.9-rc7.\u0026#xa0;Una petici\u00f3n de biovec de longitud cero emitida por el subsistema de bloques podr\u00eda causar que el Kernel entre en un bucle infinito, causando una denegaci\u00f3n de servicio.\u0026#xa0;Este fallo permite a un atacante local con privilegios b\u00e1sicos emitir peticiones a un dispositivo de bloqueo, resultando en una denegaci\u00f3n de servicio.\u0026#xa0;La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema"
    }
  ],
  "id": "CVE-2020-25641",
  "lastModified": "2026-06-17T03:07:02.023",
  "metrics": {
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      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 4.9,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 6.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
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  "published": "2020-10-06T14:15:12.603",
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}



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