Vulnerability CVE-2023-52794


Published: 2024-05-21

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

thermal: intel: powerclamp: fix mismatch in get function for max_idle

KASAN reported this

[ 444.853098] BUG: KASAN: global-out-of-bounds in param_get_int+0x77/0x90
[ 444.853111] Read of size 4 at addr ffffffffc16c9220 by task cat/2105
...
[ 444.853442] The buggy address belongs to the variable:
[ 444.853443] max_idle+0x0/0xffffffffffffcde0 [intel_powerclamp]

There is a mismatch between the param_get_int and the definition of
max_idle. Replacing param_get_int with param_get_byte resolves this
issue.

 References:
https://git.kernel.org/stable/c/6a3866dbdcf39ac93e98708e6abced511733dc18
https://git.kernel.org/stable/c/0a8585281b11e3a0723bba8d8085d61f0b55f37c
https://git.kernel.org/stable/c/fae633cfb729da2771b5433f6b84ae7e8b4aa5f7

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