CVE-2024-50169

MEDIUM

Linux Kernel 6.4-6.6.58 6.7-6.11.5 - Denial of Service via vsock rx_bytes Mismanagement

Title source: llm
STIX 2.1

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

CVSS v3 5.5
EPSS 0.0021
EPSS Percentile 11.8%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

Status published
Products (12)
linux/Kernel 6.4.0 - 6.6.59linux
linux/Kernel 6.7.0 - 6.11.6linux
Linux/Linux < 6.4
Linux/Linux 6.11.6 - 6.11.*
Linux/Linux 6.12
Linux/Linux 6.4
Linux/Linux 6.6.59 - 6.6.*
Linux/Linux 634f1a7110b439c65fd8a809171c1d2d28bcea6f - 3543152f2d330141d9394d28855cb90b860091d2
Linux/Linux 634f1a7110b439c65fd8a809171c1d2d28bcea6f - 66cd51de31c682a311c2fa25c580b7ea45859dd9
Linux/Linux 634f1a7110b439c65fd8a809171c1d2d28bcea6f - e5ca2b98090b4bb1c393088c724af6c37812a829
... and 2 more
Published Nov 07, 2024
Tracked Since Feb 18, 2026