PT-2026-44373 · Bzip2 · Bzip2

Marcin Wyczechowski + 1 · Published 2026-05-28 · Updated 2026-06-02 · CVE-2026-42250

Positive Technologies (AI Summary)

CVSS v4.0

4.8

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions bzip2 versions prior to 1.0.9

Description The bzip2recover utility contains an off-by-one error. When processing a specially crafted file, the application performs an out-of-bounds write to a global buffer, which leads to memory corruption and a crash, resulting in a denial of service.

Recommendations Update to version 1.0.9.

Fix

DoS

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2026-42250

ECHO-DFC7-0C27-52D8

Affected Products

Bzip2

References · 13

• https://nvd.nist.gov/vuln/detail/CVE-2026-42250 · Security Note
• https://inbox.sourceware.org/bzip2-devel/[e-mail] · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-42250 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-42250 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-42250 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-42250 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-42250 · Security Note
• https://sourceware.org/cgit/bzip2/commit/?id=35d122a3df8b0cc4082a4d89fdc6ee99f375fe67 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-42250 · Vendor Advisory
• https://sourceware.org/bzip2 · Note
• https://t.me/cveNotify/165049 · Telegram Post
• https://docs.bell-sw.com/security/cves/CVE-2026-42250 · Note
• https://cert.pl/en/posts/2026/05/CVE-2026-42250 · Note