CVE-2024-46692 Information

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.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Reference

https://git.kernel.org/stable/c/cdf7efe4b02aa93813db0bf1ca596ad298ab6b06 https://git.kernel.org/stable/c/e40115c33c0d79c940545b6b12112aace7acd9f5 https://git.kernel.org/stable/c/9960085a3a82c58d3323c1c20b991db6045063b0

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.5