CVE-2026-42250

Off-by-One Leading to Out-of-Bounds Write in bzip2

CVSS 4.8 MEDIUMEPSS 0.1%CWE-787

bzip2 contains an off‑by‑one error in the bzip2recover utility. When processing a specially crafted file, the application performs an out‑of‑bounds write to a global buffer, resulting in memory corruption and a crash (denial of service). This issue was fixed in bzip2 patch 35d122a3df8b0cc4082a4d89fdc6ee99f375fe67

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Productos afectados

bzip2 · bzip2

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Referencias

https://cert.pl/en/posts/2026/05/CVE-2026-42250/https://inbox.sourceware.org/bzip2-devel/20260528145407.293768-1-mark@klomp.org/https://sourceware.org/bzip2/https://sourceware.org/cgit/bzip2/commit/?id=35d122a3df8b0cc4082a4d89fdc6ee99f375fe67