vulnerability
Red Hat: CVE-2024-50169: kernel: vsock: Update rx_bytes on read_skb() (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:S/C:N/I:N/A:C) | Nov 7, 2024 | May 15, 2025 | May 15, 2025 |
Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
Nov 7, 2024
Added
May 15, 2025
Modified
May 15, 2025
Description
In the Linux kernel, the following vulnerability has been resolved:
vsock: Update rx_bytes on read_skb()
Make sure virtio_transport_inc_rx_pkt() and virtio_transport_dec_rx_pkt()
calls are balanced (i.e. virtio_vsock_sock::rx_bytes doesn't lie) after
vsock_transport::read_skb().
While here, also inform the peer that we've freed up space and it has more
credit.
Failing to update rx_bytes after packet is dequeued leads to a warning on
SOCK_STREAM recv():
[ 233.396654] rx_queue is empty, but rx_bytes is non-zero
[ 233.396702] WARNING: CPU: 11 PID: 40601 at net/vmw_vsock/virtio_transport_common.c:589
Solution(s)
redhat-upgrade-kernelredhat-upgrade-kernel-rt
References
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