fkie_cve-2021-20317
Vulnerability from fkie_nvd
Published
2021-09-27 11:15
Modified
2024-11-21 05:46
Severity ?
4.4 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Summary
A flaw was found in the Linux kernel. A corrupted timer tree caused the task wakeup to be missing in the timerqueue_add function in lib/timerqueue.c. This flaw allows a local attacker with special user privileges to cause a denial of service, slowing and eventually stopping the system while running OSP.
References
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2005258Issue Tracking, Third Party Advisory
secalert@redhat.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
secalert@redhat.comhttps://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=511885d7061eda3eb1faf3f57dcc936ff75863f1Patch, Vendor Advisory
secalert@redhat.comhttps://lists.debian.org/debian-lts-announce/2021/12/msg00012.htmlMailing List, Third Party Advisory
secalert@redhat.comhttps://lists.debian.org/debian-lts-announce/2022/03/msg00012.htmlMailing List, Third Party Advisory
secalert@redhat.comhttps://www.debian.org/security/2022/dsa-5096Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=2005258Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=511885d7061eda3eb1faf3f57dcc936ff75863f1Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2021/12/msg00012.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2022/03/msg00012.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2022/dsa-5096Third Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel 5.4
debian debian_linux 9.0
debian debian_linux 10.0


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "9121F506-8266-4787-ACB9-4221B549FA05",
                     versionEndExcluding: "5.4",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:5.4:-:*:*:*:*:*:*",
                     matchCriteriaId: "4D70AB13-37BE-4BD3-A652-10191F1642E4",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
                     matchCriteriaId: "DEECE5FC-CACF-4496-A3E7-164736409252",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
                     matchCriteriaId: "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
   ],
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "A flaw was found in the Linux kernel. A corrupted timer tree caused the task wakeup to be missing in the timerqueue_add function in lib/timerqueue.c. This flaw allows a local attacker with special user privileges to cause a denial of service, slowing and eventually stopping the system while running OSP.",
      },
      {
         lang: "es",
         value: "Se ha encontrado un fallo en el kernel de Linux. Un árbol de temporizadores corrompido hacía que faltara el despertar de la tarea en la función timerqueue_add en el archivo lib/timerqueue.c. Este defecto permite a un atacante local con privilegios de usuario especiales causar una denegación de servicio, ralentizando y eventualmente deteniendo el sistema mientras se ejecuta OSP",
      },
   ],
   id: "CVE-2021-20317",
   lastModified: "2024-11-21T05:46:21.933",
   metrics: {
      cvssMetricV2: [
         {
            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,
         },
      ],
      cvssMetricV31: [
         {
            cvssData: {
               attackComplexity: "LOW",
               attackVector: "LOCAL",
               availabilityImpact: "HIGH",
               baseScore: 4.4,
               baseSeverity: "MEDIUM",
               confidentialityImpact: "NONE",
               integrityImpact: "NONE",
               privilegesRequired: "HIGH",
               scope: "UNCHANGED",
               userInteraction: "NONE",
               vectorString: "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
               version: "3.1",
            },
            exploitabilityScore: 0.8,
            impactScore: 3.6,
            source: "nvd@nist.gov",
            type: "Primary",
         },
      ],
   },
   published: "2021-09-27T11:15:07.357",
   references: [
      {
         source: "secalert@redhat.com",
         tags: [
            "Issue Tracking",
            "Third Party Advisory",
         ],
         url: "https://bugzilla.redhat.com/show_bug.cgi?id=2005258",
      },
      {
         source: "secalert@redhat.com",
         url: "https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf",
      },
      {
         source: "secalert@redhat.com",
         tags: [
            "Patch",
            "Vendor Advisory",
         ],
         url: "https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=511885d7061eda3eb1faf3f57dcc936ff75863f1",
      },
      {
         source: "secalert@redhat.com",
         tags: [
            "Mailing List",
            "Third Party Advisory",
         ],
         url: "https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html",
      },
      {
         source: "secalert@redhat.com",
         tags: [
            "Mailing List",
            "Third Party Advisory",
         ],
         url: "https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html",
      },
      {
         source: "secalert@redhat.com",
         tags: [
            "Third Party Advisory",
         ],
         url: "https://www.debian.org/security/2022/dsa-5096",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Issue Tracking",
            "Third Party Advisory",
         ],
         url: "https://bugzilla.redhat.com/show_bug.cgi?id=2005258",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Patch",
            "Vendor Advisory",
         ],
         url: "https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=511885d7061eda3eb1faf3f57dcc936ff75863f1",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
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         ],
         url: "https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
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            "Third Party Advisory",
         ],
         url: "https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Third Party Advisory",
         ],
         url: "https://www.debian.org/security/2022/dsa-5096",
      },
   ],
   sourceIdentifier: "secalert@redhat.com",
   vulnStatus: "Modified",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-665",
            },
         ],
         source: "secalert@redhat.com",
         type: "Primary",
      },
      {
         description: [
            {
               lang: "en",
               value: "CWE-665",
            },
         ],
         source: "nvd@nist.gov",
         type: "Secondary",
      },
   ],
}


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