github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-01 11:03:43 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

efi/libstub: Zero initialize heap allocated struct screen_info

Browse Source 
After calling uefi interface allocate_pool to apply for memory, we
should clear 0 to prevent the possibility of using random values.

Signed-off-by: Qiang Ma <maqianga@uniontech.com>
Cc: <stable@vger.kernel.org> # v6.6+
Fixes: 732ea9db9d ("efi: libstub: Move screen_info handling to common code")
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
This commit is contained in:
Qiang Ma 2024-07-17 15:00:43 +08:00 committed by Ard Biesheuvel
parent 4a2ebb0822
commit ee8b8f5d83
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/firmware/efi/libstub/screen_info.c
View File

@ -32,6 +32,8 @@ struct screen_info *__alloc_screen_info(void)
if (status != EFI_SUCCESS)
return NULL;
memset(si, 0, sizeof(*si));
status = efi_bs_call(install_configuration_table,
&screen_info_guid, si);
if (status == EFI_SUCCESS)