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_bzhi | 38 ---------------------- 1 file changed, 38 deletions(-) delete mode 100644 classification/semantic_issues/gitlab_semantic_bzhi (limited to 'classification/semantic_issues/gitlab_semantic_bzhi') diff --git a/classification/semantic_issues/gitlab_semantic_bzhi b/classification/semantic_issues/gitlab_semantic_bzhi deleted file mode 100644 index b86da08c..00000000 --- a/classification/semantic_issues/gitlab_semantic_bzhi +++ /dev/null @@ -1,38 +0,0 @@ -x86 BZHI semantic bug -Description of problem -The result of instruction BZHI is different from the CPU. The value of destination register and SF of EFLAGS are different. - -Steps to reproduce - -Compile this code - - -void main() { - asm("mov rax, 0xb1aa9da2fe33fe3"); - asm("mov rbx, 0x80000000ffffffff"); - asm("mov rcx, 0xf3fce8829b99a5c6"); - asm("bzhi rax, rbx, rcx"); -} - - - -Execute and compare the result with the CPU. - -CPU - -RAX = 0x0x80000000ffffffff -SF = 1 - - -QEMU - -RAX = 0xffffffff -SF = 0 - - - - - - -Additional information -This bug is discovered by research conducted by KAIST SoftSec. -- cgit 1.4.1