# CVE-2024-50383: libbotan-2-19: Botan before 3.6.0, when certain GCC versions are used, has acompiler-induced secret-dependent operation in lib/utils...

CVE-2024-50383 is fixed in 4 products on 1 platform, first by botan 2.19.1+dfsg-2ubuntu1+esm1, released October 23, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2024-50383
- Priority: Routine
- CVSS: 5.9 (Medium)
- EPSS: 0.0055
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 23, 2024

## Description

Botan before 3.6.0, when certain GCC versions are used, has acompiler-induced secret-dependent operation in lib/utils/donna128.h indonna128 (used in Chacha-Poly1305 and x25519). An addition can be skippedif a carry is not set. This was observed for GCC 11.3.0 with -O2 on MIPS,and GCC on x86-i386. (Only 32-bit processors can be affected.)

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | Botan opensuse-leap 15.6 | 2.19.5-bp156.3.6.1 | [OPENSUSE-SU-2024:0343-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2024-0343-1.md) | Oct 30, 2024 |
| Linux | botan Debian 12.15 (bookworm) | 2.19.3+dfsg-1+deb12u1 | [DEBIAN-CVE-2024-50383](https://patchblox.com/security/data/fix/linux/debian-cve-2024-50383.md) | Oct 23, 2024 |
| Linux | botan Debian 13.5 (trixie) | 2.19.5+dfsg-3 | [DEBIAN-CVE-2024-50383](https://patchblox.com/security/data/fix/linux/debian-cve-2024-50383.md) | Oct 23, 2024 |
| Linux | botan Ubuntu 22.04.1 LTS (jammy) | 2.19.1+dfsg-2ubuntu1+esm1 | [botan 2.19.1+dfsg-2ubuntu1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-botan-2.19.1-dfsg-2ubuntu1-esm1.md) | Oct 23, 2024 |
| Linux | botan Ubuntu 24.04.5 LTS (noble) | 2.19.3+dfsg-1ubuntu2+esm1 | [botan 2.19.3+dfsg-1ubuntu2+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-botan-2.19.3-dfsg-1ubuntu2-esm1.md) | Oct 23, 2024 |
| Linux | botan Ubuntu 24.10 (oracular) | 2.19.3+dfsg-1ubuntu2.1 | [botan 2.19.3+dfsg-1ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-botan-2.19.3-dfsg-1ubuntu2.1.md) | Jan 16, 2026 |
| Linux | libbotan-2-19 Ubuntu 22.04.1 LTS (jammy) | 2.19.1+dfsg-2ubuntu1+esm1 | [libbotan-2-19 2.19.1+dfsg-2ubuntu1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libbotan-2-19-2.19.1-dfsg-2ubuntu1-esm1.md) | Oct 23, 2024 |
| Linux | libbotan-2-19 Ubuntu 24.04.5 LTS (noble) | 2.19.3+dfsg-1ubuntu2+esm1 | [libbotan-2-19 2.19.3+dfsg-1ubuntu2+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libbotan-2-19-2.19.3-dfsg-1ubuntu2-esm1.md) | Oct 23, 2024 |
| Linux | libbotan-2-19 Ubuntu 24.10 (oracular) | 2.19.3+dfsg-1ubuntu2.1 | [libbotan-2-19 2.19.3+dfsg-1ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libbotan-2-19-2.19.3-dfsg-1ubuntu2.1.md) | Jan 16, 2026 |
| Linux | python3-botan Ubuntu 22.04.1 LTS (jammy) | 2.19.1+dfsg-2ubuntu1+esm1 | [python3-botan 2.19.1+dfsg-2ubuntu1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-python3-botan-2.19.1-dfsg-2ubuntu1-esm1.md) | Oct 23, 2024 |
| Linux | python3-botan Ubuntu 24.04.5 LTS (noble) | 2.19.3+dfsg-1ubuntu2+esm1 | [python3-botan 2.19.3+dfsg-1ubuntu2+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-python3-botan-2.19.3-dfsg-1ubuntu2-esm1.md) | Oct 23, 2024 |
| Linux | python3-botan Ubuntu 24.10 (oracular) | 2.19.3+dfsg-1ubuntu2.1 | [python3-botan 2.19.3+dfsg-1ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-python3-botan-2.19.3-dfsg-1ubuntu2.1.md) | Jan 16, 2026 |

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Data as of 2026-11-09T07:25:28Z 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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