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Diffstat (limited to 'classification/semantic_issues/gitlab_semantic_blsi')
| -rw-r--r-- | classification/semantic_issues/gitlab_semantic_blsi | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/classification/semantic_issues/gitlab_semantic_blsi b/classification/semantic_issues/gitlab_semantic_blsi new file mode 100644 index 000000000..92ff92b0e --- /dev/null +++ b/classification/semantic_issues/gitlab_semantic_blsi @@ -0,0 +1,20 @@ +x86 BLSI and BLSR semantic bug +Description of problem +The result of instruction BLSI and BLSR is different from the CPU. The value of CF is different. + +Steps to reproduce + +Compile this code + + +void main() { + asm("blsi rax, rbx"); +} + + + +Execute and compare the result with the CPU. The value of CF is exactly the opposite. This problem happens with BLSR, too. + + +Additional information +This bug is discovered by research conducted by KAIST SoftSec. |