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authorChristian Krinitsin <mail@krinitsin.com>2025-06-08 14:19:33 +0000
committerChristian Krinitsin <mail@krinitsin.com>2025-06-08 14:19:33 +0000
commit9ebc3c7b58e0820054942a2e22b7c48889c3ee26 (patch)
tree4aa48e6571ba9d616b61fde66be09aba9c9594f9 /results/classifier/012/x86/gitlab_semantic_blsmsk
parent3af0ee7c943b43fc12cca126c4cc03eef9f1191a (diff)
downloadqemu-analysis-9ebc3c7b58e0820054942a2e22b7c48889c3ee26.tar.gz
qemu-analysis-9ebc3c7b58e0820054942a2e22b7c48889c3ee26.zip
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+x86: 0.997
+semantic: 0.987
+architecture: 0.935
+assembly: 0.879
+device: 0.743
+graphic: 0.735
+vnc: 0.612
+socket: 0.607
+mistranslation: 0.603
+boot: 0.585
+register: 0.568
+arm: 0.512
+risc-v: 0.501
+debug: 0.428
+permissions: 0.370
+network: 0.366
+files: 0.340
+PID: 0.289
+other: 0.269
+performance: 0.268
+TCG: 0.254
+kernel virtual machine: 0.130
+
+x86 BLSMSK semantic bug
+Description of problem
+The result of instruction BLSMSK is different with from the CPU. The value of CF is different.
+
+Steps to reproduce
+
+Compile this code
+
+void main() {
+    asm("mov rax, 0x65b2e276ad27c67");
+    asm("mov rbx, 0x62f34955226b2b5d");
+    asm("blsmsk eax, ebx");
+}
+
+Execute and compare the result with the CPU.
+
+CPU
+
+CF = 0
+
+
+QEMU
+
+CF = 1
+
+Additional information
+This bug is discovered by research conducted by KAIST SoftSec.