# CVE-2023-42365: busybox: Fixed use-after-free in the awk.c copyvar function (bsc#1217585)

CVE-2023-42365 is fixed in 7 products on 1 platform, first by busybox 1:1.36.1-6ubuntu3.1, released November 27, 2023. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-42365
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0039
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Nov 27, 2023

## Description

Fixed use-after-free in the awk.c copyvar function (bsc#1217585)

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | busybox Debian 12.15 (bookworm) | 1:1.35.0-4+deb12u1 | [DEBIAN-CVE-2023-42365](https://patchblox.com/security/data/fix/linux/debian-cve-2023-42365.md) | Nov 27, 2023 |
| Linux | busybox Debian 13.5 (trixie) | 1:1.37.0-1 | [DEBIAN-CVE-2023-42365](https://patchblox.com/security/data/fix/linux/debian-cve-2023-42365.md) | Nov 27, 2023 |
| Linux | busybox Debian 14 | 1:1.37.0-1 | [DEBIAN-CVE-2023-42365](https://patchblox.com/security/data/fix/linux/debian-cve-2023-42365.md) | Nov 27, 2023 |
| Linux | busybox Ubuntu 24.04.5 LTS (noble) | 1:1.36.1-6ubuntu3.1 | [busybox 1:1.36.1-6ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-busybox-1-1.36.1-6ubuntu3.1.md) | Nov 27, 2023 |
| Linux | busybox Ubuntu 24.10 (oracular) | 1:1.36.1-6ubuntu4 | [busybox 1:1.36.1-6ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-busybox-1-1.36.1-6ubuntu4.md) | Jan 16, 2026 |
| Linux | busybox Ubuntu 25.04 (plucky) | 1:1.36.1-6ubuntu4 | [busybox 1:1.36.1-6ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-busybox-1-1.36.1-6ubuntu4.md) | Jan 16, 2026 |
| Linux | busybox opensuse-leap 15.6 | 1.37.0-150500.10.11.1 | [SUSE-SU-2025:03271-2](https://patchblox.com/security/data/fix/linux/suse-su-2025-03271-2.md) | Sep 23, 2025 |
| Linux | busybox sles 15.6 | 1.37.0-150500.10.11.1 | [SUSE-SU-2025:03271-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03271-1.md) | Sep 23, 2025 |
| Linux | busybox sles 15.7 | 1.37.0-150700.18.4.1 | [SUSE-SU-2025:03205-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03205-1.md) | Sep 12, 2025 |
| Linux | busybox-initramfs Ubuntu 24.04.5 LTS (noble) | 1:1.36.1-6ubuntu3.1 | [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 |
| Linux | busybox-initramfs Ubuntu 24.10 (oracular) | 1:1.36.1-6ubuntu4 | [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 |
| Linux | busybox-initramfs Ubuntu 25.04 (plucky) | 1:1.36.1-6ubuntu4 | [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 |
| Linux | busybox-links opensuse-leap 15.6 | 1.37.0-150500.7.7.2 | [SUSE-SU-2025:03271-2](https://patchblox.com/security/data/fix/linux/suse-su-2025-03271-2.md) | Sep 23, 2025 |
| Linux | busybox-static Ubuntu 24.04.5 LTS (noble) | 1:1.36.1-6ubuntu3.1 | [busybox-static 1:1.36.1-6ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-busybox-static-1-1.36.1-6ubuntu3.1.md) | Nov 27, 2023 |
| Linux | busybox-static Ubuntu 24.10 (oracular) | 1:1.36.1-6ubuntu4 | [busybox-static 1:1.36.1-6ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-busybox-static-1-1.36.1-6ubuntu4.md) | Jan 16, 2026 |
| Linux | busybox-static Ubuntu 25.04 (plucky) | 1:1.36.1-6ubuntu4 | [busybox-static 1:1.36.1-6ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-busybox-static-1-1.36.1-6ubuntu4.md) | Jan 16, 2026 |
| Linux | busybox-syslogd Ubuntu 24.04.5 LTS (noble) | 1:1.36.1-6ubuntu3.1 | [busybox-syslogd 1:1.36.1-6ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-busybox-syslogd-1-1.36.1-6ubuntu3.1.md) | Nov 27, 2023 |
| Linux | busybox-syslogd Ubuntu 24.10 (oracular) | 1:1.36.1-6ubuntu4 | [busybox-syslogd 1:1.36.1-6ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-busybox-syslogd-1-1.36.1-6ubuntu4.md) | Jan 16, 2026 |
| Linux | busybox-syslogd Ubuntu 25.04 (plucky) | 1:1.36.1-6ubuntu4 | [busybox-syslogd 1:1.36.1-6ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-busybox-syslogd-1-1.36.1-6ubuntu4.md) | Jan 16, 2026 |
| Linux | udhcpc Ubuntu 24.04.5 LTS (noble) | 1:1.36.1-6ubuntu3.1 | [udhcpc 1:1.36.1-6ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-udhcpc-1-1.36.1-6ubuntu3.1.md) | Nov 27, 2023 |
| Linux | udhcpc Ubuntu 24.10 (oracular) | 1:1.36.1-6ubuntu4 | [udhcpc 1:1.36.1-6ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-udhcpc-1-1.36.1-6ubuntu4.md) | Jan 16, 2026 |
| Linux | udhcpc Ubuntu 25.04 (plucky) | 1:1.36.1-6ubuntu4 | [udhcpc 1:1.36.1-6ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-udhcpc-1-1.36.1-6ubuntu4.md) | Jan 16, 2026 |
| Linux | udhcpd Ubuntu 24.04.5 LTS (noble) | 1:1.36.1-6ubuntu3.1 | [udhcpd 1:1.36.1-6ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-udhcpd-1-1.36.1-6ubuntu3.1.md) | Nov 27, 2023 |
| Linux | udhcpd Ubuntu 24.10 (oracular) | 1:1.36.1-6ubuntu4 | [udhcpd 1:1.36.1-6ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-udhcpd-1-1.36.1-6ubuntu4.md) | Jan 16, 2026 |
| Linux | udhcpd Ubuntu 25.04 (plucky) | 1:1.36.1-6ubuntu4 | [udhcpd 1:1.36.1-6ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-udhcpd-1-1.36.1-6ubuntu4.md) | Jan 16, 2026 |

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Data as of 2026-11-11T07:45:43Z 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

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