cbcvebase.
CVE-2021-47024
published 2024-02-28

CVE-2021-47024: 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…

PriorityP419medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.25%
16.3th percentile
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

Affected

23 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 5.10.38-1 (bookworm)linux 5.10.38-1 (bookworm)
linuxlinux——
linuxlinux——
linuxlinux——
linuxlinux——
linuxlinux——
linuxlinux——
linuxlinux>= 4.14.122 < 4.154.15
linuxlinux>= 4.19.46 < 4.204.20
linuxlinux>= 4.9.179 < 4.104.10
linuxlinux>= 5.0.19 < 5.15.1
linuxlinux>= 5.1.5 < 5.25.2
linuxlinux>= ac03046ece2b158ebd204dfc4896fd9f39f0e6c8 < b605673b523fe33abeafb2136759bcbc9c1e6ebfb605673b523fe33abeafb2136759bcbc9c1e6ebf
linuxlinux>= ac03046ece2b158ebd204dfc4896fd9f39f0e6c8 < 27691665145e74a45034a9dccf1150cf1894763a27691665145e74a45034a9dccf1150cf1894763a
linuxlinux>= ac03046ece2b158ebd204dfc4896fd9f39f0e6c8 < 37c38674ef2f8d7e8629e5d433c37d6c1273d16b37c38674ef2f8d7e8629e5d433c37d6c1273d16b
linuxlinux>= ac03046ece2b158ebd204dfc4896fd9f39f0e6c8 < 8432b8114957235f42e070a16118a7f750de9d398432b8114957235f42e070a16118a7f750de9d39
linuxlinux_kernel>= 0 < 5.10.38-15.10.38-1
linuxlinux_kernel>= 0 < 5.10.38-15.10.38-1
linuxlinux_kernel>= 0 < 5.10.38-15.10.38-1
linuxlinux_kernel>= 0 < 5.10.38-15.10.38-1
linuxlinux_kernel>= 5.11 < 5.11.215.11.21
linuxlinux_kernel>= 5.12 < 5.12.45.12.4
linuxlinux_kernel>= 5.2 < 5.10.375.10.37

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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