summary refs log tree commit diff stats
path: root/results/classifier/009/semantic/gitlab_semantic_bzhi
diff options
context:
space:
mode:
Diffstat (limited to 'results/classifier/009/semantic/gitlab_semantic_bzhi')
-rw-r--r--results/classifier/009/semantic/gitlab_semantic_bzhi53
1 files changed, 53 insertions, 0 deletions
diff --git a/results/classifier/009/semantic/gitlab_semantic_bzhi b/results/classifier/009/semantic/gitlab_semantic_bzhi
new file mode 100644
index 00000000..253ab418
--- /dev/null
+++ b/results/classifier/009/semantic/gitlab_semantic_bzhi
@@ -0,0 +1,53 @@
+semantic: 0.920
+graphic: 0.652
+device: 0.589
+vnc: 0.287
+debug: 0.256
+boot: 0.220
+network: 0.203
+socket: 0.198
+performance: 0.165
+PID: 0.130
+permissions: 0.069
+other: 0.064
+KVM: 0.064
+files: 0.051
+
+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.