pyzipper has an encryption bypass for small files encrypted using it

Impact A Python operator precedence bug in pyzipper/zipfileaes.py caused the AE-2 format to never be automatically selected during encryption, regardless of file size or compression type. As a result, all encrypted entries are written in AE-1 format unless AE-2 is explicitly forced by the caller...

OSV-2026-53 Heap-use-after-free in graph::LigatureSubstFormat1::shrink

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=475607265 Crash type: Heap-use-after-free READ 8 Crash state: graph::LigatureSubstFormat1::shrink graph::LigatureSubstFormat1::splitcontextt::shrink hbvectort graph::actuatesubtablesplitgraph::LigatureSu...

luksmeta: Data corruption when handling LUKS1 partitions with luksmeta

A data corruption vulnerability has been identified in the luksmeta utility when used with the LUKS1 disk encryption format. An attacker with the necessary permissions can exploit this flaw by writing a large amount of metadata to an encrypted device. The utility fails to correctly validate the...