CVE-2026-26158
Fixed in a distro release EPSS <1%CVSS 7.0
A flaw was found in BusyBox. This vulnerability allows an attacker to modify files outside of the intended extraction directory by crafting a malicious tar archive containing unvalidated hardlink or symlink entries. If the tar archive is extracted with elevated privileges, this flaw can lead to privilege escalation, enabling an attacker to gain unauthorized access to critical system files.
Products: Red Hat Hardened Images, Red Hat Enterprise Linux 6, Siemens RUGGEDCOM RST2428P
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | busybox | 1.37.0-r58 |
| Debian 12 | busybox | no fix |
| Debian 13 | busybox | no fix |
| Debian 14 | busybox | 1:1.37.0-10.1 |
| Red Hat hummingbird 1 | busybox | 0:1.37.0-7.2.hum1 |
| Red Hat hummingbird 1 | busybox-petitboot | 0:1.37.0-7.2.hum1 |
| Red Hat hummingbird 1 | busybox-shared | 0:1.37.0-7.2.hum1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | busybox | 1.35.0-150400.3.14.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | busybox | 1.35.0-150400.3.14.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | busybox | 1.37.0-150500.10.17.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | busybox | 1.37.0-150500.10.17.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | busybox | 1.37.0-150700.18.15.1 |
| SUSE Linux Enterprise Server 12 SP5-LTSS | busybox | 1.35.0-10.3.1 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | busybox | 1.35.0-150400.3.14.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | busybox | 1.37.0-150500.10.17.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | busybox | 1.37.0-150500.10.17.1 |
| SUSE Linux Enterprise Server 16.0 | busybox | 1.37.0-160000.5.1 |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | busybox | 1.35.0-10.3.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | busybox | 1.35.0-150400.3.14.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | busybox | 1.37.0-150500.10.17.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | busybox | 1.37.0-150500.10.17.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | busybox | 1.37.0-160000.5.1 |
| Ubuntu 20.04 LTS | busybox | no fix |
| Ubuntu 22.04 LTS | busybox | no fix |
| Ubuntu 24.04 LTS | busybox | no fix |
| Ubuntu 25.10 | busybox | no fix |
| Ubuntu 26.04 LTS | busybox | no fix |
| Ubuntu 26.10 | busybox | no fix |
| Ubuntu Pro 14.04 LTS | busybox | no fix |
| Ubuntu Pro 16.04 LTS | busybox | no fix |
| Ubuntu Pro 18.04 LTS | busybox | no fix |
| Wolfi | busybox | 1.37.0-r58 |
| openSUSE Leap 15.6 | busybox | 1.37.0-150500.10.17.1 |
| openSUSE Leap 15.6 | busybox-links | 1.37.0-150500.7.11.1 |
| openSUSE Leap 16.0 | busybox | 1.37.0-160000.5.1 |
| openSUSE Tumbleweed | busybox | 1.37.0-9.1 |