CVE-2021-46919 Information

Description

In the Linux kernel the following vulnerability has been resolved:

dmaengine: idxd: fix wq size store permission state

WQ size can only be changed when the device is disabled. Current code allows change when device is enabled but wq is disabled. Change the check to detect device state.

Reference

https://git.kernel.org/stable/c/4ecf25595273203010bc8318c4aee60ad64037ae https://git.kernel.org/stable/c/05b7791c4c4aa8304368fdc55ae911f6b34e7281 https://git.kernel.org/stable/c/0fff71c5a311e1264988179f7dcc217fda15fadd