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efi/libstub: smbios: Use length member instead of record struct size

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The type 1 SMBIOS record happens to always be the same size, but there
are other record types which have been augmented over time, and so we
should really use the length field in the header to decide where the
string table starts.

Fixes: 550b33cfd4 ("arm64: efi: Force the use of ...")
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
This commit is contained in:
Ard Biesheuvel
2023-02-28 19:23:09 +01:00
parent 8b3a149db4
commit 34343eb06a
1 changed files with 1 additions and 1 deletions
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2
drivers/firmware/efi/libstub/smbios.c
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@@ -36,7 +36,7 @@ const u8 *__efi_get_smbios_string(u8 type, int offset, int recsize)
if (status != EFI_SUCCESS)
return NULL;
strtable = (u8 *)record + recsize;
strtable = (u8 *)record + record->length;
for (int i = 1; i < ((u8 *)record)[offset]; i++) {
int len = strlen(strtable);