AIKIDO-2026-10777
stringzilla is vulnerable to Out-of-bounds Read
82
High Risk
This Affects:
stringzillaTL;DR
AVX-512 Skylake search compares masked-off SIMD lanes without restricting equality masks, so certain needles dominated by zero bytes can create phantom matches past h_length - n_length and yield bogus pointers or following compares read beyond the haystack. Lexicographic ordering used masked operands asymmetrically so mismatch scans could advance past min(a_length, b_length) and index garbage behind the shorter buffer. Sequence-intersect helpers allocated backing tables but omitted paired frees on success paths, leaking memory across repeated calls.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
stringzilla is vulnerable to Out-of-bounds Read in versions 4.0.0 - 4.6.0.
How to fix this
Upgrade the stringzilla library to the patch version.
Are You Affected?
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