CVE-2026-42250

unknown

EUVD alias: EUVD-2026-32898

Published 2026-05-28 · Modified 2026-05-28

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CVSS v3

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CVSS v4 NEW

5.1

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

VIR risk

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Description

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

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

Mitigation details

Source: Debian Security Tracker · View original ↗ · DFSG

CVE-2026-42250 NameCVE-2026-42250 Descriptionbzip2 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 SourceCVE (at NVD; CERT, ENISA, LWN,…

CVE-2026-42250

Name	CVE-2026-42250
Description	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
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1138255

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
bzip2 (PTS)	bullseye	1.0.8-4	vulnerable
	bookworm	1.0.8-5	vulnerable
	forky, sid, trixie	1.0.8-6	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
bzip2	source	(unstable)	(unfixed)			1138255

Notes

[trixie] - bzip2 <no-dsa> (Minor issue)
[bookworm] - bzip2 <no-dsa> (Minor issue)
https://inbox.sourceware.org/bzip2-devel/20260528145407.293768-1-mark@klomp.org/
Fixed by: https://sourceware.org/cgit/bzip2/commit/?id=35d122a3df8b0cc4082a4d89fdc6ee99f375fe67

Home - Debian Security - Source (Git)

Apply commands

text fix

Notes

[trixie] - bzip2 <no-dsa> (Minor issue)[bookworm] - bzip2 <no-dsa> (Minor issue)https://inbox.sourceware.org/bzip2-devel/20260528145407.293768-1-mark@klomp.org/Fixed by: https://sourceware.org/cgit/bzip2/commit/?id=35d122a3df8b0cc4082a4d89fdc6ee99f375fe67

OS impact

Debian Affected 5 releases

Version	Status	Fixed in
trixie	Affected	—
sid	Affected	—
forky	Affected	—
bullseye	Affected	—
bookworm	Affected	—

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

Windows Affected 1 release

Version	Status	Fixed in
—	Affected	—

References

CWEs

CWE-787

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.