# busybox-initramfs security updates

Patch Radar has 14 security fixes for busybox-initramfs, closing 21 CVEs. The newest is busybox-initramfs 1:1.36.1-6ubuntu4 (1:1.36.1-6ubuntu4), released January 16, 2026.

- Web page: https://patchblox.com/security/product/linux/busybox-initramfs
- Platform: Linux
- Supported: yes

## Security fixes, newest first

| Fix | Released | Fixed in | Priority | CVEs | Exploited |
|---|---|---|---|---:|---:|
| [busybox-initramfs 1:1.36.1-6ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-busybox-initramfs-1-1.36.1-6ubuntu4.md) | Jan 16, 2026 | Ubuntu 25.04 (plucky) 1:1.36.1-6ubuntu4 | High | 4 | 0 |
| [busybox-initramfs 1:1.36.1-6ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-busybox-initramfs-1-1.36.1-6ubuntu4.md) | Jan 16, 2026 | Ubuntu 24.10 (oracular) 1:1.36.1-6ubuntu4 | High | 4 | 0 |
| [busybox-initramfs 1:1.36.1-6ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-busybox-initramfs-1-1.36.1-6ubuntu3.1.md) | Nov 27, 2023 | Ubuntu 24.04.5 LTS (noble) 1:1.36.1-6ubuntu3.1 | High | 4 | 0 |
| [busybox-initramfs 1:1.27.2-2ubuntu3.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-busybox-initramfs-1-1.27.2-2ubuntu3.4-esm1.md) | Aug 22, 2023 | Ubuntu 18.04.6 LTS (bionic) 1:1.27.2-2ubuntu3.4+esm1 | High | 1 | 0 |
| [busybox-initramfs 1:1.30.1-4ubuntu6.5](https://patchblox.com/security/data/fix/linux/ubuntu-focal-busybox-initramfs-1-1.30.1-4ubuntu6.5.md) | Aug 22, 2023 | Ubuntu 20.04 LTS (focal) 1:1.30.1-4ubuntu6.5 | High | 1 | 0 |
| [busybox-initramfs 1:1.30.1-7ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-busybox-initramfs-1-1.30.1-7ubuntu3.1.md) | Aug 22, 2023 | Ubuntu 22.04.1 LTS (jammy) 1:1.30.1-7ubuntu3.1 | High | 1 | 0 |
| [busybox-initramfs 1:1.27.2-2ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-busybox-initramfs-1-1.27.2-2ubuntu3.4.md) | Nov 15, 2021 | Ubuntu 18.04.6 LTS (bionic) 1:1.27.2-2ubuntu3.4 | High | 10 | 0 |
| [busybox-initramfs 1:1.30.1-4ubuntu6.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-busybox-initramfs-1-1.30.1-4ubuntu6.4.md) | Nov 15, 2021 | Ubuntu 20.04 LTS (focal) 1:1.30.1-4ubuntu6.4 | High | 10 | 0 |
| [busybox-initramfs 1:1.30.1-7ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-busybox-initramfs-1-1.30.1-7ubuntu2.md) | Nov 15, 2021 | Ubuntu 22.04.1 LTS (jammy) 1:1.30.1-7ubuntu2 | High | 10 | 0 |
| [busybox-initramfs 1:1.27.2-2ubuntu3.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-busybox-initramfs-1-1.27.2-2ubuntu3.2.md) | Jan 8, 2019 | Ubuntu 18.04.6 LTS (bionic) 1:1.27.2-2ubuntu3.2 | Routine | 3 | 0 |
| [busybox-initramfs 1:1.27.2-2ubuntu3.3](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-busybox-initramfs-1-1.27.2-2ubuntu3.3.md) | Jun 26, 2018 | Ubuntu 18.04.6 LTS (bionic) 1:1.27.2-2ubuntu3.3 | Routine | 1 | 0 |
| [busybox-initramfs 1:1.30.1-4ubuntu6.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-busybox-initramfs-1-1.30.1-4ubuntu6.2.md) | Jun 26, 2018 | Ubuntu 20.04 LTS (focal) 1:1.30.1-4ubuntu6.2 | Routine | 1 | 0 |
| [busybox-initramfs 1:1.27.2-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-busybox-initramfs-1-1.27.2-1ubuntu4.md) | Nov 19, 2017 | Ubuntu 18.04.6 LTS (bionic) 1:1.27.2-1ubuntu4 | Routine | 2 | 0 |
| [busybox-initramfs 1:1.27.2-2ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-busybox-initramfs-1-1.27.2-2ubuntu3.md) | Aug 6, 2017 | Ubuntu 18.04.6 LTS (bionic) 1:1.27.2-2ubuntu3 | Routine | 1 | 0 |

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Data as of 2026-11-07T12:40:37Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo