Riskcovery

CVE-2024-50169

vsock: Update rx_bytes on read_skb()

State
Published
Severity
5.5 Medium
Published
Nov 7, 2024
Updated
May 11, 2026
Reserved
Oct 21, 2024

Read the record on cve.org

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

Scores

CVSSScoreVectorSource
3.15.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HCISA-ADP

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 634f1a7110b439c65fd8a809171c1d2d28bcea6f to before 66cd51de31c682a311c2fa25c580b7ea45859dd9Affected
  • 634f1a7110b439c65fd8a809171c1d2d28bcea6f to before e5ca2b98090b4bb1c393088c724af6c37812a829Affected
  • 634f1a7110b439c65fd8a809171c1d2d28bcea6f to before 3543152f2d330141d9394d28855cb90b860091d2Affected
LinuxLinux
  • 6.4Affected
  • before 6.4Not affected
  • 6.6.59 through 6.6.*Not affected
  • 6.11.6 through 6.11.*Not affected
  • 6.12 and laterNot affected

References

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