fkie_cve-2021-47521
Vulnerability from fkie_nvd
Published
2024-05-24 15:15
Modified
2024-11-21 06:36
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: can: sja1000: fix use after free in ems_pcmcia_add_card() If the last channel is not available then "dev" is freed. Fortunately, we can just use "pdev->irq" instead. Also we should check if at least one channel was set up.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1a295fea90e1acbe80c6d4940f5ff856edcd6becPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1dd5b819f7e406dc15bbc7670596ff25261aaa2aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3ec6ca6b1a8e64389f0212b5a1b0f6fed1909e45Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/474f9a8534f5f89841240a7e978bafd6e1e039cePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/923f4dc5df679f678e121c20bf2fd70f7bf3e288Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c8718026ba287168ff9ad0ccc4f9a413062cba36Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cbd86110546f7f730a1f5d7de56c944a336c15c4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ccf070183e4655824936c0f96c4a2bcca93419aaPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/1a295fea90e1acbe80c6d4940f5ff856edcd6becPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/1dd5b819f7e406dc15bbc7670596ff25261aaa2aPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/3ec6ca6b1a8e64389f0212b5a1b0f6fed1909e45Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/474f9a8534f5f89841240a7e978bafd6e1e039cePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/923f4dc5df679f678e121c20bf2fd70f7bf3e288Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c8718026ba287168ff9ad0ccc4f9a413062cba36Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/cbd86110546f7f730a1f5d7de56c944a336c15c4Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ccf070183e4655824936c0f96c4a2bcca93419aaPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "E8A4BCFB-2E82-46CF-9D84-81F454F3C1BC",
                     versionEndExcluding: "4.4.295",
                     versionStartIncluding: "3.2",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "5D107324-F4B9-4146-BACC-391E95D41D67",
                     versionEndExcluding: "4.9.293",
                     versionStartIncluding: "4.5",
                     vulnerable: true,
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                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                     versionEndExcluding: "4.14.258",
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                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "CECDDE2F-DEEF-4D3A-85FF-6AEBA16D225B",
                     versionEndExcluding: "4.19.221",
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                     vulnerable: true,
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                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                     vulnerable: true,
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                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "D9668578-08F7-4694-A86F-FCE448387A79",
                     versionEndExcluding: "5.10.85",
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                     versionEndExcluding: "5.15.8",
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                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
   ],
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: sja1000: fix use after free in ems_pcmcia_add_card()\n\nIf the last channel is not available then \"dev\" is freed.  Fortunately,\nwe can just use \"pdev->irq\" instead.\n\nAlso we should check if at least one channel was set up.",
      },
      {
         lang: "es",
         value: "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: can: sja1000: arreglar el use after free en ems_pcmcia_add_card() Si el último canal no está disponible entonces se libera \"dev\". Afortunadamente, podemos usar \"pdev->irq\" en su lugar. También debemos comprobar si se configuró al menos un canal.",
      },
   ],
   id: "CVE-2021-47521",
   lastModified: "2024-11-21T06:36:26.170",
   metrics: {
      cvssMetricV31: [
         {
            cvssData: {
               attackComplexity: "LOW",
               attackVector: "LOCAL",
               availabilityImpact: "HIGH",
               baseScore: 7.8,
               baseSeverity: "HIGH",
               confidentialityImpact: "HIGH",
               integrityImpact: "HIGH",
               privilegesRequired: "LOW",
               scope: "UNCHANGED",
               userInteraction: "NONE",
               vectorString: "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
               version: "3.1",
            },
            exploitabilityScore: 1.8,
            impactScore: 5.9,
            source: "nvd@nist.gov",
            type: "Primary",
         },
      ],
   },
   published: "2024-05-24T15:15:14.203",
   references: [
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         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         tags: [
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      },
      {
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         source: "af854a3a-2127-422b-91ae-364da2661108",
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         url: "https://git.kernel.org/stable/c/c8718026ba287168ff9ad0ccc4f9a413062cba36",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
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         source: "af854a3a-2127-422b-91ae-364da2661108",
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      },
   ],
   sourceIdentifier: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
   vulnStatus: "Modified",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-416",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
   ],
}


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