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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-07-03 19:39:53 +0200 |
|---|---|---|
| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-07-03 19:39:53 +0200 |
| commit | dee4dcba78baf712cab403d47d9db319ab7f95d6 (patch) | |
| tree | 418478faf06786701a56268672f73d6b0b4eb239 /results/classifier/zero-shot/014/semantic-x86/gitlab_semantic_bzhi | |
| parent | 4d9e26c0333abd39bdbd039dcdb30ed429c475ba (diff) | |
| download | qemu-analysis-dee4dcba78baf712cab403d47d9db319ab7f95d6.tar.gz qemu-analysis-dee4dcba78baf712cab403d47d9db319ab7f95d6.zip | |
restructure results
Diffstat (limited to 'results/classifier/zero-shot/014/semantic-x86/gitlab_semantic_bzhi')
| -rw-r--r-- | results/classifier/zero-shot/014/semantic-x86/gitlab_semantic_bzhi | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/results/classifier/zero-shot/014/semantic-x86/gitlab_semantic_bzhi b/results/classifier/zero-shot/014/semantic-x86/gitlab_semantic_bzhi new file mode 100644 index 000000000..2794b0114 --- /dev/null +++ b/results/classifier/zero-shot/014/semantic-x86/gitlab_semantic_bzhi @@ -0,0 +1,70 @@ +x86: 0.983 +semantic: 0.920 +graphic: 0.652 +device: 0.589 +architecture: 0.518 +register: 0.406 +assembly: 0.406 +arm: 0.318 +ppc: 0.310 +kernel: 0.308 +vnc: 0.287 +debug: 0.256 +operating system: 0.234 +boot: 0.220 +risc-v: 0.211 +network: 0.203 +socket: 0.198 +mistranslation: 0.171 +performance: 0.165 +PID: 0.130 +peripherals: 0.094 +i386: 0.091 +alpha: 0.089 +permissions: 0.069 +KVM: 0.064 +VMM: 0.056 +TCG: 0.053 +files: 0.051 +virtual: 0.048 +hypervisor: 0.031 +user-level: 0.025 + +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. |