Description
A flaw was found in unzip. The vulnerability occurs due to improper handling of Unicode strings, which can lead to a null pointer dereference. This flaw allows an attacker to input a specially crafted zip file, leading to a crash or code execution.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | unzip | unzip 6.0 | — |
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 | No fix yet | — |
| Debian 13 | unzip | No fix yet | — |
| Debian 12 | unzip | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | unzip | 6.0-28ubuntu4.1 | USN-7054-1 |
| Ubuntu 22.04 LTS | unzip | 6.0-26ubuntu3.1 | USN-5673-1 |
| Ubuntu 20.04 LTS | unzip | 6.0-25ubuntu1.1 | USN-5673-1 |
| Ubuntu 18.04 LTS | unzip | 6.0-21ubuntu1.2 | USN-5673-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | unzip | 6.0-20ubuntu1.1+esm1 | USN-5673-1 |
| Ubuntu Pro 14.04 LTS | unzip | 6.0-9ubuntu1.6+esm1 | USN-5673-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | unzip | 6.0-r11 | — |
| Alpine v3.23 | unzip | 6.0-r11 | — |
| Alpine v3.22 | unzip | 6.0-r11 | — |
| Alpine v3.21 | unzip | 6.0-r11 | — |
| Alpine v3.20 | unzip | 6.0-r11 | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | unzip | 6.0-r11 | — |
| Alpine v3.18 | unzip | 6.0-r11 | — |
| Alpine v3.17 | unzip | 6.0-r11 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | unzip | 6.0-57.amzn2023.0.2 | ALAS2023-2023-029 |
| Amazon Linux 2 | unzip | 6.0-57.amzn2.0.1 | ALAS2-2023-1906 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | unzip | 6.0-22 | — |
| Azure Linux 2 (CBL-Mariner) | unzip | 6.0-22 | — |
Advisories 6
- USN-5673-1 unzip vulnerabilities Ubuntu Security Notices (USN) · Jun 29, 2026
- USN-7054-1 unzip vulnerability Ubuntu Security Notices (USN) · Feb 10, 2026
- WID-SEC-2022-1335 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 6, 2025
- VDE-2025-053 Phoenix Contact: Multiple Vulnerabilities in PLCnext Firmware CERT@VDE · Jul 8, 2025
- ALAS2023-2023-029 Low: unzip security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Feb 22, 2023
- ALAS2-2023-1906 Low: unzip security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jan 20, 2023