Vulnerability Description
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
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.2, < 5.10.37 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/27691665145e74a45034a9dccf1150cf1894763aPatch
- https://git.kernel.org/stable/c/37c38674ef2f8d7e8629e5d433c37d6c1273d16bPatch
- https://git.kernel.org/stable/c/8432b8114957235f42e070a16118a7f750de9d39Patch
- https://git.kernel.org/stable/c/b605673b523fe33abeafb2136759bcbc9c1e6ebfPatch
- https://git.kernel.org/stable/c/27691665145e74a45034a9dccf1150cf1894763aPatch
- https://git.kernel.org/stable/c/37c38674ef2f8d7e8629e5d433c37d6c1273d16bPatch
- https://git.kernel.org/stable/c/8432b8114957235f42e070a16118a7f750de9d39Patch
- https://git.kernel.org/stable/c/b605673b523fe33abeafb2136759bcbc9c1e6ebfPatch
FAQ
What is CVE-2021-47024?
CVE-2021-47024 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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. ...
How severe is CVE-2021-47024?
CVE-2021-47024 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-47024?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.