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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-06-03 12:04:13 +0000 |
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| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-06-03 12:04:13 +0000 |
| commit | 256709d2eb3fd80d768a99964be5caa61effa2a0 (patch) | |
| tree | 05b2352fba70923126836a64b6a0de43902e976a /results/classifier/002/semantic/gitlab_semantic_bzhi | |
| parent | 2ab14fa96a6c5484b5e4ba8337551bb8dcc79cc5 (diff) | |
| download | qemu-analysis-256709d2eb3fd80d768a99964be5caa61effa2a0.tar.gz qemu-analysis-256709d2eb3fd80d768a99964be5caa61effa2a0.zip | |
add new classifier result
Diffstat (limited to 'results/classifier/002/semantic/gitlab_semantic_bzhi')
| -rw-r--r-- | results/classifier/002/semantic/gitlab_semantic_bzhi | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/results/classifier/002/semantic/gitlab_semantic_bzhi b/results/classifier/002/semantic/gitlab_semantic_bzhi new file mode 100644 index 000000000..944cd8148 --- /dev/null +++ b/results/classifier/002/semantic/gitlab_semantic_bzhi @@ -0,0 +1,44 @@ +semantic: 0.920 +instruction: 0.623 +boot: 0.220 +mistranslation: 0.171 +other: 0.064 + +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. |