CVE-2026-42250

EUVD-2026-32898
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
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
CERT-PLCNA
4.8 MEDIUM
LOCAL
LOW
NONE
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
Base Score
CVSS 3.x
EPSS Score
Percentile: 2%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
bzip2_projectbzip2
𝑥
≤ 1.0.8
CNA
Azure Linux logo
Azure Linux Releases
Azure Package
Release
bzip2
Azure Linux 3.0
0:1.0.8-2.azl3
fixed
kata-containers-cc
Azure Linux 3.0
0:3.15.0.aks0-15.azl3
fixed
Common Weakness Enumeration
References
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