Insufficient archive validation can cause out-of-bounds reads in archives containing hash tables
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.
RUSTSEC-2026-0234 is recorded against 1 package.
Published on 11 May 2026 and last revised on 4 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
crates.io (Package)
rustsec.org (Advisory)
github.com (Report)
github.com (Report)
github.com (Report)
github.com (Report)
github.com (Web)
github.com (Web)
rkyv has other advisories on record. If you are patching this one, these are worth checking on the same host:
Details
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| rkyv | — | — |
References
Similar Threats
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