CVE-2024-46692

MEDIUM

Linux Kernel 6.3-6.6.48, 6.7-6.10.7 - Deadlock via SMC Wait Queue Context Race

Title source: llm
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: firmware: qcom: scm: Mark get_wq_ctx() as atomic call Currently get_wq_ctx() is wrongly configured as a standard call. When two SMC calls are in sleep and one SMC wakes up, it calls get_wq_ctx() to resume the corresponding sleeping thread. But if get_wq_ctx() is interrupted, goes to sleep and another SMC call is waiting to be allocated a waitq context, it leads to a deadlock. To avoid this get_wq_ctx() must be an atomic call and can't be a standard SMC call. Hence mark get_wq_ctx() as a fast call.

Scores

CVSS v3 5.5
EPSS 0.0017
EPSS Percentile 6.5%
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

CWE
CWE-667
Status published
Products (12)
linux/Kernel 6.3.0 - 6.6.49linux
linux/Kernel 6.7.0 - 6.10.8linux
Linux/Linux < 6.3
Linux/Linux 6.10.8 - 6.10.*
Linux/Linux 6.11
Linux/Linux 6.3
Linux/Linux 6.6.49 - 6.6.*
Linux/Linux 6bf32599223634294cdc6efb359ffaab1d68073c - 9960085a3a82c58d3323c1c20b991db6045063b0
Linux/Linux 6bf32599223634294cdc6efb359ffaab1d68073c - cdf7efe4b02aa93813db0bf1ca596ad298ab6b06
Linux/Linux 6bf32599223634294cdc6efb359ffaab1d68073c - e40115c33c0d79c940545b6b12112aace7acd9f5
... and 2 more
Published Sep 13, 2024
Tracked Since Feb 18, 2026