# CVE-2018-20532: libsolv0: There is a NULL pointer dereference at ext/testcase.c (function testcase_read) in libsolvext.a in libsolv through 0.7...

CVE-2018-20532 is fixed in 6 products on 1 platform, first by libsolv-perl 0.6.30-1ubuntu0.1~esm1, released December 27, 2018. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2018-20532
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0206
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 27, 2018

## Description

There is a NULL pointer dereference at ext/testcase.c (function testcase_read) in libsolvext.a in libsolv through 0.7.2 that will cause a denial of service.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libsolv-perl Ubuntu 18.04.6 LTS (bionic) | 0.6.30-1ubuntu0.1~esm1 | [libsolv-perl 0.6.30-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libsolv-perl-0.6.30-1ubuntu0.1-esm1.md) | Dec 27, 2018 |
| Linux | libsolv-tools Ubuntu 18.04.6 LTS (bionic) | 0.6.30-1ubuntu0.1~esm1 | [libsolv-tools 0.6.30-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libsolv-tools-0.6.30-1ubuntu0.1-esm1.md) | Dec 27, 2018 |
| Linux | libsolv0 Ubuntu 18.04.6 LTS (bionic) | 0.6.30-1ubuntu0.1~esm1 | [libsolv0 0.6.30-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libsolv0-0.6.30-1ubuntu0.1-esm1.md) | Dec 27, 2018 |
| Linux | libsolvext0 Ubuntu 18.04.6 LTS (bionic) | 0.6.30-1ubuntu0.1~esm1 | [libsolvext0 0.6.30-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libsolvext0-0.6.30-1ubuntu0.1-esm1.md) | Dec 27, 2018 |
| Linux | python-solv Ubuntu 18.04.6 LTS (bionic) | 0.6.30-1ubuntu0.1~esm1 | [python-solv 0.6.30-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-solv-0.6.30-1ubuntu0.1-esm1.md) | Dec 27, 2018 |
| Linux | python3-solv Ubuntu 18.04.6 LTS (bionic) | 0.6.30-1ubuntu0.1~esm1 | [python3-solv 0.6.30-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python3-solv-0.6.30-1ubuntu0.1-esm1.md) | Dec 27, 2018 |

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Data as of 2026-11-09T13:31:49Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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