From b1a7a5e0b8822a0868ee9318d8d3fa9645efc12d Mon Sep 17 00:00:00 2001 From: Masahisa Kojima Date: Wed, 14 Apr 2021 11:55:49 +0900 Subject: [PATCH] efi_loader: fix possible buffer overflow Variable "final" will have SHA512 digest, but currently the array size is not sufficient. Let's fix it. Signed-off-by: Masahisa Kojima Reviewed-by: Ilias Apalodimas Reviewed-by: Heinrich Schuchardt --- lib/efi_loader/efi_tcg2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/efi_loader/efi_tcg2.c b/lib/efi_loader/efi_tcg2.c index ed86a220fb..d5eca68769 100644 --- a/lib/efi_loader/efi_tcg2.c +++ b/lib/efi_loader/efi_tcg2.c @@ -515,7 +515,7 @@ static efi_status_t tcg2_create_digest(const u8 *input, u32 length, sha1_context ctx; sha256_context ctx_256; sha512_context ctx_512; - u8 final[TPM2_ALG_SHA512]; + u8 final[TPM2_SHA512_DIGEST_SIZE]; efi_status_t ret; u32 active; int i; -- 2.39.5