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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-06-01 21:35:14 +0200 |
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| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-06-01 21:35:14 +0200 |
| commit | 3e4c5a6261770bced301b5e74233e7866166ea5b (patch) | |
| tree | 9379fddaba693ef8a045da06efee8529baa5f6f4 /results/classifier/04/semantic/gitlab_semantic_adox | |
| parent | e5634e2806195bee44407853c4bf8776f7abfa4f (diff) | |
| download | qemu-analysis-3e4c5a6261770bced301b5e74233e7866166ea5b.tar.gz qemu-analysis-3e4c5a6261770bced301b5e74233e7866166ea5b.zip | |
clean up repository
Diffstat (limited to 'results/classifier/04/semantic/gitlab_semantic_adox')
| -rw-r--r-- | results/classifier/04/semantic/gitlab_semantic_adox | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/results/classifier/04/semantic/gitlab_semantic_adox b/results/classifier/04/semantic/gitlab_semantic_adox new file mode 100644 index 000000000..ed838cbdd --- /dev/null +++ b/results/classifier/04/semantic/gitlab_semantic_adox @@ -0,0 +1,49 @@ +semantic: 0.990 +instruction: 0.944 +assembly: 0.913 +graphic: 0.782 +device: 0.776 +vnc: 0.663 +boot: 0.599 +socket: 0.556 +mistranslation: 0.452 +network: 0.426 +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. |