mirror of
https://github.com/RGBCube/serenity
synced 2025-07-27 20:37:34 +00:00
Kernel: Enable x86 UMIP (User Mode Instruction Prevention) if supported
This prevents code running outside of kernel mode from using the following instructions: * SGDT - Store Global Descriptor Table * SIDT - Store Interrupt Descriptor Table * SLDT - Store Local Descriptor Table * SMSW - Store Machine Status Word * STR - Store Task Register There's no need for userspace to be able to use these instructions so let's just disable them to prevent information leakage.
This commit is contained in:
parent
5aeaab601e
commit
9c0836ce97
5 changed files with 23 additions and 1 deletions
|
@ -513,3 +513,4 @@ extern bool g_cpu_supports_pae;
|
|||
extern bool g_cpu_supports_pge;
|
||||
extern bool g_cpu_supports_smep;
|
||||
extern bool g_cpu_supports_sse;
|
||||
extern bool g_cpu_supports_umip;
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue