# CVE-2020-12135: libwhoopsie0: bson before 0.8 incorrectly uses int rather than size_t for many variables,parameters, and return values

CVE-2020-12135 is fixed in 2 products on 1 platform, first by libwhoopsie0 0.2.62ubuntu0.5, released July 6, 2020. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2020-12135
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0117
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 23, 2020

## Description

bson before 0.8 incorrectly uses int rather than size_t for many variables,parameters, and return values. In particular, the bson_ensure_space()parameter bytesNeeded could have an integer overflow via properlyconstructed bson input.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libwhoopsie0 Ubuntu 18.04.6 LTS (bionic) | 0.2.62ubuntu0.5 | [libwhoopsie0 0.2.62ubuntu0.5](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libwhoopsie0-0.2.62ubuntu0.5.md) | Jul 6, 2020 |
| Linux | libwhoopsie0 Ubuntu 20.04 LTS (focal) | 0.2.69ubuntu0.1 | [libwhoopsie0 0.2.69ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libwhoopsie0-0.2.69ubuntu0.1.md) | Jul 6, 2020 |
| Linux | libwhoopsie0 Ubuntu 24.10 (oracular) | 0.2.71 | [libwhoopsie0 0.2.71](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libwhoopsie0-0.2.71.md) | Jan 16, 2026 |
| Linux | libwhoopsie0 Ubuntu 25.04 (plucky) | 0.2.71 | [libwhoopsie0 0.2.71](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libwhoopsie0-0.2.71.md) | Jan 16, 2026 |
| Linux | whoopsie Ubuntu 18.04.6 LTS (bionic) | 0.2.62ubuntu0.5 | [whoopsie 0.2.62ubuntu0.5](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-whoopsie-0.2.62ubuntu0.5.md) | Jul 6, 2020 |
| Linux | whoopsie Ubuntu 20.04 LTS (focal) | 0.2.69ubuntu0.1 | [whoopsie 0.2.69ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-whoopsie-0.2.69ubuntu0.1.md) | Jul 6, 2020 |
| Linux | whoopsie Ubuntu 24.10 (oracular) | 0.2.71 | [whoopsie 0.2.71](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-whoopsie-0.2.71.md) | Jan 16, 2026 |
| Linux | whoopsie Ubuntu 25.04 (plucky) | 0.2.71 | [whoopsie 0.2.71](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-whoopsie-0.2.71.md) | Jan 16, 2026 |

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Data as of 2026-11-09T01:18:40Z 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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