CVE-2021-47024 (GCVE-0-2021-47024)

Vulnerability from cvelistv5 – Published: 2024-02-28 08:13 – Updated: 2025-05-04 12:40
VLAI?
Title
vsock/virtio: free queued packets when closing socket
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
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: ac03046ece2b158ebd204dfc4896fd9f39f0e6c8 , < b605673b523fe33abeafb2136759bcbc9c1e6ebf (git)
Affected: ac03046ece2b158ebd204dfc4896fd9f39f0e6c8 , < 27691665145e74a45034a9dccf1150cf1894763a (git)
Affected: ac03046ece2b158ebd204dfc4896fd9f39f0e6c8 , < 37c38674ef2f8d7e8629e5d433c37d6c1273d16b (git)
Affected: ac03046ece2b158ebd204dfc4896fd9f39f0e6c8 , < 8432b8114957235f42e070a16118a7f750de9d39 (git)
Affected: 4ea082cd3c400cd5bb36a7beb7e441bf3e29350d (git)
Affected: 4e539fa2dec4db3405e47002f2878aa4a99eb68b (git)
Affected: 4af8a327aeba102aaa9b78f3451f725bc590b237 (git)
Affected: 51adb8ebe8c1d80528fc2ea863cfea9d32d2c52b (git)
Affected: 7d29c9ad0ed525c1b10e29cfca4fb1eece1e93fb (git)
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    Linux Linux Affected: 5.2
Unaffected: 0 , < 5.2 (semver)
Unaffected: 5.10.37 , ≤ 5.10.* (semver)
Unaffected: 5.11.21 , ≤ 5.11.* (semver)
Unaffected: 5.12.4 , ≤ 5.12.* (semver)
Unaffected: 5.13 , ≤ * (original_commit_for_fix)
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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.