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: 7.2%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
bzip2_projectbzip2
𝑥
≤ 1.0.8
CNA
Debian logo
Debian Releases
Debian Product
Codename
bzip2
bookworm
no-dsa
bullseye
no-dsa
forky
vulnerable
sid
vulnerable
trixie
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
bzip2
bionic
Fixed 1.0.6-8.1ubuntu0.2+esm1
released
focal
Fixed 1.0.8-2ubuntu0.1~esm1
released
jammy
Fixed 1.0.8-5ubuntu0.1
released
noble
Fixed 1.0.8-5.1ubuntu0.1
released
questing
ignored
resolute
Fixed 1.0.8-6ubuntu0.1
released
trusty
Fixed 1.0.6-5ubuntu0.1~esm3
released
xenial
Fixed 1.0.6-8ubuntu0.2+esm1
released
clamav
bionic
not-affected
focal
not-affected
jammy
not-affected
noble
not-affected
questing
not-affected
resolute
not-affected
trusty
not-affected
xenial
not-affected
openSUSE logo
openSUSE / SLES Releases
openSUSE Product
Release
bzip2
suse enterprise desktop 15 SP7
1.0.8-150400.3.4.1
fixed
suse enterprise sap 12 SP5
1.0.6-30.17.1
fixed
suse enterprise sap 15 SP7
1.0.8-150400.3.4.1
fixed
suse enterprise server 12 SP3
1.0.6-30.17.1
fixed
suse enterprise server 12 SP5
1.0.6-30.17.1
fixed
suse enterprise server 15 SP4
1.0.8-150400.3.4.1
fixed
suse enterprise server 15 SP7
1.0.8-150400.3.4.1
fixed
bzip2-doc
suse enterprise sap 12 SP5
1.0.6-30.17.1
fixed
suse enterprise server 12 SP3
1.0.6-30.17.1
fixed
suse enterprise server 12 SP5
1.0.6-30.17.1
fixed
libbz2-1
suse enterprise desktop 15 SP7
1.0.8-150400.3.4.1
fixed
suse enterprise sap 12 SP5
1.0.6-30.17.1
fixed
suse enterprise sap 15 SP7
1.0.8-150400.3.4.1
fixed
suse enterprise server 12 SP3
1.0.6-30.17.1
fixed
suse enterprise server 12 SP5
1.0.6-30.17.1
fixed
suse enterprise server 15 SP4
1.0.8-150400.3.4.1
fixed
suse enterprise server 15 SP7
1.0.8-150400.3.4.1
fixed
libbz2-1-32bit
suse enterprise desktop 15 SP7
1.0.8-150400.3.4.1
fixed
suse enterprise sap 12 SP5
1.0.6-30.17.1
fixed
suse enterprise sap 15 SP7
1.0.8-150400.3.4.1
fixed
suse enterprise server 12 SP3
1.0.6-30.17.1
fixed
suse enterprise server 12 SP5
1.0.6-30.17.1
fixed
suse enterprise server 15 SP4
1.0.8-150400.3.4.1
fixed
suse enterprise server 15 SP7
1.0.8-150400.3.4.1
fixed
libbz2-devel
suse enterprise desktop 15 SP7
1.0.8-150400.3.4.1
fixed
suse enterprise sap 12 SP5
1.0.6-30.17.1
fixed
suse enterprise sap 15 SP7
1.0.8-150400.3.4.1
fixed
suse enterprise server 12 SP5
1.0.6-30.17.1
fixed
suse enterprise server 15 SP4
1.0.8-150400.3.4.1
fixed
suse enterprise server 15 SP7
1.0.8-150400.3.4.1
fixed
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