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DEBIAN-CVE-2026-4424 - debian/libarchive

A flaw was found in libarchive. This heap out-of-bounds read vulnerability exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods. A remote attacker can exploit this by providing a specially crafted RAR archive, leading to the disclosure of sensitive heap memory information without requiring authentication or user interaction.

CVSS 7.5 (HIGH)

Evidence
  • imported from OSV Debian, untriaged
History
  • 2026-10-28: pending-human-approval - bulk import