Description
Info-ZIP UnZip 6.0 has a buffer overflow in list.c, when a ZIP archive has a crafted relationship between the compressed-size value and the uncompressed-size value, because a buffer size is 10 and is supposed to be 12.
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 | unzip | 6.0-11 | — |
| Debian 13 | unzip | 6.0-11 | — |
| Debian 12 | unzip | 6.0-11 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | unzip | 6.0-21ubuntu1.1 | USN-4672-1 |
| Ubuntu 16.04 LTS | unzip | 6.0-20ubuntu1.1 | USN-4672-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | unzip | 6.0-9ubuntu1.6 | USN-4672-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | unzip | 6.0-20.el7 | RHSA-2019:2159 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | unzip | 6.00-4.8.13 | SUSE-SU-2019:0707-1 |
| SLES 12 SP5 | unzip | 6.00-33.13.3 | SUSE-SU-2020:1796-1 |
| SLES 12 SP4 | unzip | 6.00-33.13.3 | SUSE-SU-2020:1796-1 |
| SLES 11 SP4 | unzip | 6.00-11.18.8.1 | SUSE-SU-2019:13984-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | unzip | 6.00-33.13.3 | SUSE-SU-2020:1796-1 |
| SLES for SAP 12 SP4 | unzip | 6.00-33.13.3 | SUSE-SU-2020:1796-1 |
| SLES for SAP 11 SP4 | unzip | 6.00-11.18.8.1 | SUSE-SU-2019:13984-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | unzip | 6.00-39.1 | openSUSE-SU-2024:11485-1 |
| openSUSE Leap 15.0 | unzip +1 | 6.00-lp150.8.3 | openSUSE-SU-2019:1117-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | unzip | 6.0-r9 | — |
| Alpine v3.23 | unzip | 6.0-r9 | — |
| Alpine v3.22 | unzip | 6.0-r9 | — |
| Alpine v3.21 | unzip | 6.0-r9 | — |
| Alpine v3.20 | unzip | 6.0-r9 | — |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | unzip | 6.0-r9 | — |
| Alpine v3.18 | unzip | 6.0-r9 | — |
| Alpine v3.17 | unzip | 6.0-r9 | — |
| Alpine v3.16 | unzip | 6.0-r9 | — |
| Alpine v3.15 | unzip | 6.0-r9 | — |
| Alpine v3.14 | unzip | 6.0-r9 | — |
| Alpine v3.13 | unzip | 6.0-r9 | — |
| Alpine v3.12 | unzip | 6.0-r9 | — |
| Alpine v3.11 | unzip | 6.0-r7 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | unzip | 6.0-20.amzn2 | ALAS2-2019-1355 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | unzip | 6.0-20 | — |
| Azure Linux 2 (CBL-Mariner) | unzip | 6.0-19 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | unzip | 6.0-20.el7 | ELSA-2019-2159 |
Advisories 10
- USN-4672-1 unzip vulnerabilities Ubuntu Security Notices (USN) · Jun 29, 2026
- RHSA-2019:2159 Red Hat Security Advisory: unzip security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- SUSE-SU-2019:13984-1 Security update for unzip SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0707-1 Security update for unzip SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:1117-1 Security update for unzip SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:1796-1 Security update for unzip SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11485-1 unzip-6.00-39.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- VDE-2025-053 Phoenix Contact: Multiple Vulnerabilities in PLCnext Firmware CERT@VDE · Jul 8, 2025
- ALAS2-2019-1355 Low: unzip security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Nov 7, 2019
- ELSA-2019-2159 Low: unzip security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 13, 2019
References
- https://bugzilla.suse.com/show_bug.cgi?id=1110194
- https://sourceforge.net/p/infozip/bugs/53/
- openSUSE-SU-2019:1117 vendor-advisory
- RHSA-2019:2159 vendor-advisory