From d760c82f4244dc47f5413c3c88b640bb1f0f2d9e Mon Sep 17 00:00:00 2001 From: Christian Krinitsin Date: Tue, 3 Jun 2025 14:41:43 +0200 Subject: move semantic_issues dir to results --- .../semantic_issues/gitlab_semantic_bextr | 25 ---------------------- 1 file changed, 25 deletions(-) delete mode 100644 classification/semantic_issues/gitlab_semantic_bextr (limited to 'classification/semantic_issues/gitlab_semantic_bextr') diff --git a/classification/semantic_issues/gitlab_semantic_bextr b/classification/semantic_issues/gitlab_semantic_bextr deleted file mode 100644 index dabe16ac..00000000 --- a/classification/semantic_issues/gitlab_semantic_bextr +++ /dev/null @@ -1,25 +0,0 @@ -x86 BEXTR semantic bug -Description of problem -The result of instruction BEXTR is different with from the CPU. The value of destination register is different. I think QEMU does not consider the operand size limit. - -Steps to reproduce - -Compile this code - -void main() { - asm("mov rax, 0x17b3693f77fb6e9"); - asm("mov rbx, 0x8f635a775ad3b9b4"); - asm("mov rcx, 0xb717b75da9983018"); - asm("bextr eax, ebx, ecx"); -} - -Execute and compare the result with the CPU. - -CPU -RAX = 0x5a - -QEMU -RAX = 0x635a775a - -Additional information -This bug is discovered by research conducted by KAIST SoftSec. -- cgit 1.4.1