RUSTSEC-2026-0234None▾ SunlitInsufficient archive validation can cause out-of-bounds reads in archives containing hash tables
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
Last analysed / modified upstream
The archive validator could accept certain malformed relative pointers and
invalid ArchivedHashTable states. In particular, the hash table verifier did
not ensure that the number of occupied buckets matched the table's declared
length.
A crafted archive could pass the checks performed by the safe rkyv::access
and rkyv::from_bytes APIs and then cause an out-of-bounds read in later
validation, lookup, or deserialization. Depending on the input, this could
perform scalar or SIMD reads outside the archive buffer or crash the process.
Version 0.8.17 strengthens archive range validation and rejects hash tables whose number of occupied buckets does not match their declared length. Users who process untrusted archives should upgrade to 0.8.17 or later.
rkyv >= 0.8.0-rc.1, < 0.8.17Upgrade to a patched release:
rkyv 0.8.17Connected by shared product, vendor, weakness, or advisory.