PT-2026-62042 · Egor · Data::Reqrep::Shared
CVE-2026-59139
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Publicado
2026-07-21
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Atualizado
2026-07-21
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Data::ReqRep::Shared versions before 0.05 for Perl allow an out-of-bounds read via an unvalidated arena offset and length in reqrep recv locked.
The attach-time validator reqrep validate header checks the header scalars and region layout against the file size, but does not validate the array contents it then trusts. reqrep recv locked does memcpy(copy buf, req arena + arena off, len) with arena off and len read raw from the mmap'd segment and never bounded against the arena capacity (req arena cap).
A local peer that can write the backing file can leave the header valid while poisoning a request slot's offset and length, so receiving the request copies a file-controlled offset and length out of the arena, reading adjacent memory or crashing the process.
Out of bounds Read
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Data::Reqrep::Shared