fkie_cve-2021-47024
Vulnerability from fkie_nvd
Published
2024-02-28 09:15
Modified
2024-12-06 20:53
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: vsock/virtio: free queued packets when closing socket As reported by syzbot [1], there is a memory leak while closing the socket. We partially solved this issue with commit ac03046ece2b ("vsock/virtio: free packets during the socket release"), but we forgot to drain the RX queue when the socket is definitely closed by the scheduled work. To avoid future issues, let's use the new virtio_transport_remove_sock() to drain the RX queue before removing the socket from the af_vsock lists calling vsock_remove_sock(). [1] https://syzkaller.appspot.com/bug?extid=24452624fc4c571eedd9
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/27691665145e74a45034a9dccf1150cf1894763aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/37c38674ef2f8d7e8629e5d433c37d6c1273d16bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8432b8114957235f42e070a16118a7f750de9d39Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b605673b523fe33abeafb2136759bcbc9c1e6ebfPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/27691665145e74a45034a9dccf1150cf1894763aPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/37c38674ef2f8d7e8629e5d433c37d6c1273d16bPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8432b8114957235f42e070a16118a7f750de9d39Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b605673b523fe33abeafb2136759bcbc9c1e6ebfPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "CAD59DAB-9845-41C5-9D7A-EB9C40A85BE5",
                     versionEndExcluding: "5.10.37",
                     versionStartIncluding: "5.2",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "8CBB94EC-EC33-4464-99C5-03E5542715F0",
                     versionEndExcluding: "5.11.21",
                     versionStartIncluding: "5.11",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "D8C7052F-1B7B-4327-9C2B-84EBF3243838",
                     versionEndExcluding: "5.12.4",
                     versionStartIncluding: "5.12",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
   ],
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "In the Linux kernel, the following vulnerability has been resolved:\n\nvsock/virtio: free queued packets when closing socket\n\nAs reported by syzbot [1], there is a memory leak while closing the\nsocket. We partially solved this issue with commit ac03046ece2b\n(\"vsock/virtio: free packets during the socket release\"), but we\nforgot to drain the RX queue when the socket is definitely closed by\nthe scheduled work.\n\nTo avoid future issues, let's use the new virtio_transport_remove_sock()\nto drain the RX queue before removing the socket from the af_vsock lists\ncalling vsock_remove_sock().\n\n[1] https://syzkaller.appspot.com/bug?extid=24452624fc4c571eedd9",
      },
      {
         lang: "es",
         value: "En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: vsock/virtio: paquetes libres en cola al cerrar el socket Según lo informado por syzbot [1], hay una pérdida de memoria al cerrar el socket. Resolvimos parcialmente este problema con el compromiso ac03046ece2b (\"vsock/virtio: paquetes libres durante el lanzamiento del socket\"), pero nos olvidamos de vaciar la cola RX cuando el trabajo programado cierra definitivamente el socket. Para evitar problemas futuros, usemos el nuevo virtio_transport_remove_sock() para drenar la cola RX antes de eliminar el socket de las listas af_vsock llamando a vsock_remove_sock(). [1] https://syzkaller.appspot.com/bug?extid=24452624fc4c571eedd9",
      },
   ],
   id: "CVE-2021-47024",
   lastModified: "2024-12-06T20:53:23.077",
   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",
         },
      ],
   },
   published: "2024-02-28T09:15:39.243",
   references: [
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/27691665145e74a45034a9dccf1150cf1894763a",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/37c38674ef2f8d7e8629e5d433c37d6c1273d16b",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/8432b8114957235f42e070a16118a7f750de9d39",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/b605673b523fe33abeafb2136759bcbc9c1e6ebf",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/27691665145e74a45034a9dccf1150cf1894763a",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/37c38674ef2f8d7e8629e5d433c37d6c1273d16b",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/8432b8114957235f42e070a16118a7f750de9d39",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/b605673b523fe33abeafb2136759bcbc9c1e6ebf",
      },
   ],
   sourceIdentifier: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
   vulnStatus: "Analyzed",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-401",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
   ],
}


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