CVE-2024-50169

vsock: Update rx_bytes on read_skb()

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

5.5

CVSS

Severity: Medium

CVSS 3.1 •

EPSS 0.02%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/66cd51de31c682a311c2fa25c580b7ea45859dd9	patch
https://git.kernel.org/stable/c/e5ca2b98090b4bb1c393088c724af6c37812a829	patch
https://git.kernel.org/stable/c/3543152f2d330141d9394d28855cb90b860091d2	patch

Frequently Asked Questions

What is the severity of CVE-2024-50169?: CVE-2024-50169 has been scored as a medium severity vulnerability.
How to fix CVE-2024-50169?: To fix CVE-2024-50169, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-50169 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2024-50169 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-50169?: CVE-2024-50169 affects Linux Linux, Linux Linux.

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