CVE-2021-47024 (GCVE-0-2021-47024)
Vulnerability from cvelistv5
Published
2024-02-28 08:13
Modified
2024-12-19 07:33
Severity ?
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 Version: ac03046ece2b158ebd204dfc4896fd9f39f0e6c8
Version: ac03046ece2b158ebd204dfc4896fd9f39f0e6c8
Version: ac03046ece2b158ebd204dfc4896fd9f39f0e6c8
Version: ac03046ece2b158ebd204dfc4896fd9f39f0e6c8
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   Linux Linux Version: 5.2
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         cveMetadata: "{\"cveId\": \"CVE-2021-47024\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T07:33:48.472Z\", \"dateReserved\": \"2024-02-27T18:42:55.960Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-02-28T08:13:36.489Z\", \"assignerShortName\": \"Linux\"}",
         dataType: "CVE_RECORD",
         dataVersion: "5.1",
      },
   },
}


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