From 2773b5e236e2217a35a53dbc298757610c7bbbc6 Mon Sep 17 00:00:00 2001 From: Christian Krinitsin Date: Wed, 4 Jun 2025 21:20:13 +0000 Subject: add new iteration --- .../classifier/008/semantic/gitlab_semantic_adox | 51 ++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 results/classifier/008/semantic/gitlab_semantic_adox (limited to 'results/classifier/008/semantic/gitlab_semantic_adox') diff --git a/results/classifier/008/semantic/gitlab_semantic_adox b/results/classifier/008/semantic/gitlab_semantic_adox new file mode 100644 index 000000000..abcd950e3 --- /dev/null +++ b/results/classifier/008/semantic/gitlab_semantic_adox @@ -0,0 +1,51 @@ +semantic: 0.990 +graphic: 0.782 +device: 0.776 +debug: 0.706 +vnc: 0.663 +boot: 0.599 +socket: 0.556 +permissions: 0.500 +performance: 0.460 +network: 0.426 +files: 0.374 +PID: 0.343 +other: 0.286 +KVM: 0.240 + +x86 ADOX and ADCX semantic bug +Description of problem +The result of instruction ADOX and ADCX are different from the CPU. The value of one of EFLAGS is different. + +Steps to reproduce + +Compile this code + + +void main() { + asm("push 512; popfq;"); + asm("mov rax, 0xffffffff84fdbf24"); + asm("mov rbx, 0xb197d26043bec15d"); + asm("adox eax, ebx"); +} + + + +Execute and compare the result with the CPU. This problem happens with ADCX, too (with CF). + +CPU + +OF = 0 + + +QEMU + +OF = 1 + + + + + + +Additional information +This bug is discovered by research conducted by KAIST SoftSec. -- cgit 1.4.1