CVE-2024-35824

Technical Description

In the Linux kernel, the following vulnerability has been resolved:

misc: lis3lv02d_i2c: Fix regulators getting en-/dis-abled twice on suspend/resume

When not configured for wakeup lis3lv02d_i2c_suspend() will call

lis3lv02d_poweroff() even if the device has already been turned off

by the runtime-suspend handler and if configured for wakeup and

the device is runtime-suspended at this point then it is not turned

back on to serve as a wakeup source.

Before commit b1b9f7a49440 ("misc: lis3lv02d_i2c: Add missing setting

of the reg_ctrl callback"), lis3lv02d_poweroff() failed to disable

the regulators which as a side effect made calling poweroff() twice ok.

Now that poweroff() correctly disables the regulators, doing this twice

triggers a WARN() in the regulator core:

unbalanced disables for regulator-dummy

WARNING: CPU: 1 PID: 92 at drivers/regulator/core.c:2999 _regulator_disable

...

Fix lis3lv02d_i2c_suspend() to not call poweroff() a second time if

already runtime-suspended and ad

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected Products

References