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
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| bzip2 | bzip2 | ≤ 1.0.8 | 35d122a3df8b0cc4082a4d89fdc6ee99f375fe67 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | bzip2 | No fix yet | — |
| Debian 13 | bzip2 | No fix yet | — |
| Debian 12 | bzip2 | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | bzip2 | No fix yet | — |
| Ubuntu 26.04 LTS | bzip2 | 1.0.8-6ubuntu0.1 | USN-8685-1 |
| Ubuntu 25.10 | bzip2 | No fix yet | — |
| Ubuntu 24.04 LTS | bzip2 | 1.0.8-5.1ubuntu0.1 | USN-8685-1 |
| Ubuntu 22.04 LTS | bzip2 | 1.0.8-5ubuntu0.1 | USN-8685-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | bzip2 | 1.0.8-2ubuntu0.1~esm1 | USN-8685-1 |
| Ubuntu Pro 18.04 LTS | bzip2 | 1.0.6-8.1ubuntu0.2+esm1 | USN-8685-1 |
| Ubuntu Pro 16.04 LTS | bzip2 | 1.0.6-8ubuntu0.2+esm1 | USN-8685-1 |
| Ubuntu Pro 14.04 LTS | bzip2 | 1.0.6-5ubuntu0.1~esm3 | USN-8685-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | bzip2 +3 | 1.0.8-23.2.hum1 | RHSA-2026:30268 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | bzip2 | 1.0.8-150400.3.4.1 | SUSE-SU-2026:4055-1 |
| SLES 12 SP5 | bzip2 | 1.0.6-30.17.1 | SUSE-SU-2026:3925-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | bzip2 | 1.0.8-160000.3.1 | SUSE-SU-2026:23627-1 |
| SLES 16.0 | bzip2 | 1.0.8-160000.3.1 | SUSE-SU-2026:23627-1 |
| SLE Micro 6.2 | bzip2 | 1.0.8-160000.3.1 | SUSE-SU-2026:23494-1 |
| SLE Micro 6.1 | bzip2 | 1.0.8-slfo.1.1_2.1 | SUSE-SU-2026:23415-1 |
| SLE Micro 6.0 | bzip2 | 1.0.8-4.1 | SUSE-SU-2026:23442-1 |
| SLE Micro 5.5 | bzip2 | 1.0.8-150400.3.4.1 | SUSE-SU-2026:4055-1 |
| SLE Micro 5.4 | bzip2 | 1.0.8-150400.3.4.1 | SUSE-SU-2026:4055-1 |
| SLE Micro 5.3 | bzip2 | 1.0.8-150400.3.4.1 | SUSE-SU-2026:4055-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | bzip2 | 1.0.8-6.1 | openSUSE-SU-2026:11627-1 |
| openSUSE Leap 16.0 | bzip2 | 1.0.8-160000.3.1 | openSUSE-SU-2026:21762-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | bzip2 | 1.0.8-2 | — |
| Azure Linux 3 | kata-containers-cc | 3.15.0.aks0-15 | — |
Advisories 12
- RHSA-2026:30268 Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- WID-SEC-2026-3642 Meinberg LANTIME: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 14, 2026
- SUSE-SU-2026:23627-1 Security update for bzip2 SUSE / openSUSE Security Updates · Sep 29, 2026
- WID-SEC-2026-1729 bzip2: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Sep 16, 2026
- SUSE-SU-2026:23494-1 Security update for bzip2 SUSE / openSUSE Security Updates · Sep 14, 2026
- SUSE-SU-2026:23442-1 Security update for bzip2 SUSE / openSUSE Security Updates · Sep 14, 2026
- SUSE-SU-2026:23415-1 Security update for bzip2 SUSE / openSUSE Security Updates · Sep 14, 2026
- SUSE-SU-2026:4055-1 Security update for bzip2 SUSE / openSUSE Security Updates · Sep 13, 2026
- SUSE-SU-2026:3925-1 Security update for bzip2 SUSE / openSUSE Security Updates · Sep 10, 2026
- openSUSE-SU-2026:21762-1 Security update for bzip2 SUSE / openSUSE Security Updates · Sep 9, 2026
- USN-8685-1 bzip2 vulnerability Ubuntu Security Notices (USN) · Sep 1, 2026
- openSUSE-SU-2026:11627-1 bzip2-1.0.8-6.1 on GA media SUSE / openSUSE Security Updates · Aug 29, 2026