proxmox-mirrors/efi-boot-shim
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Fix buffer overrun / damaged options passed to second_stage.

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start is a UCS-2 character pointer and loader_len is a number of bytes.
Adjust loader_len to count characters before adding to the start pointer.
This commit is contained in:
John S. Gruber 2017-04-24 14:44:59 -04:00 committed by Peter Jones
parent 5c3bf32908
commit f481019157
1 changed files with 1 additions and 1 deletions
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shim.c
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@ -2531,7 +2531,7 @@ EFI_STATUS set_second_stage (EFI_HANDLE image_handle)
loader_str[loader_len/2-1] = L'\0'; loader_str[loader_len/2-1] = L'\0';
second_stage = loader_str; second_stage = loader_str;
load_options = remaining_size ? start + loader_len : NULL; load_options = remaining_size ? start + (loader_len/2) : NULL;
load_options_size = remaining_size; load_options_size = remaining_size;
} }