CVE-2024-42135

MEDIUM

Linux Kernel < 6.6.39 - Denial of Service via vhost_task SIGKILL Handling

Title source: llm

Description

In the Linux kernel, the following vulnerability has been resolved: vhost_task: Handle SIGKILL by flushing work and exiting Instead of lingering until the device is closed, this has us handle SIGKILL by: 1. marking the worker as killed so we no longer try to use it with new virtqueues and new flush operations. 2. setting the virtqueue to worker mapping so no new works are queued. 3. running all the exiting works.

References (3)

Core 3

Core References

Patch

https://git.kernel.org/stable/c/abe067dc3a662eef7d5cddbbc41ed50a0b68b0af

Patch

https://git.kernel.org/stable/c/dec987fe2df670827eb53b97c9552ed8dfc63ad4

Patch

https://git.kernel.org/stable/c/db5247d9bf5c6ade9fd70b4e4897441e0269b233

Scores

CVSS v3 5.5

EPSS 0.0023

EPSS Percentile 13.6%

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 (11)

linux/Kernel 6.4.0 - 6.6.39linux

linux/Kernel 6.7.0 - 6.9.9linux

Linux/Linux < 6.4

Linux/Linux 6.10

Linux/Linux 6.4

Linux/Linux 6.6.39 - 6.6.*

Linux/Linux 6.9.9 - 6.9.*

Linux/Linux f9010dbdce911ee1f1af1398a24b1f9f992e0080 - abe067dc3a662eef7d5cddbbc41ed50a0b68b0af

Linux/Linux f9010dbdce911ee1f1af1398a24b1f9f992e0080 - db5247d9bf5c6ade9fd70b4e4897441e0269b233

Linux/Linux f9010dbdce911ee1f1af1398a24b1f9f992e0080 - dec987fe2df670827eb53b97c9552ed8dfc63ad4

... and 1 more

Published Jul 30, 2024

Tracked Since Feb 18, 2026