# CVE-2023-24056: pkgconf: In pkgconf through 1.9.3, variable duplication can cause unbounded string expansion due to incorrect checks in libpkg...

CVE-2023-24056 is fixed in 8 products on 1 platform, first by DEBIAN-CVE-2023-24056, released January 22, 2023. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-24056
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0058
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jan 22, 2023

## Description

In pkgconf through 1.9.3, variable duplication can cause unbounded string expansion due to incorrect checks in libpkgconf/tuple.c:pkgconf_tuple_parse. For example, a .pc file containing a few hundred bytes can expand to one billion bytes.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libpkgconf amzn 2023 | 1.8.0-4.amzn2023.0.2 | [ALAS2023-2023-159](https://patchblox.com/security/data/fix/linux/alas2023-2023-159.md) | Apr 13, 2023 |
| Linux | libpkgconf-debuginfo amzn 2023 | 1.8.0-4.amzn2023.0.2 | [ALAS2023-2023-159](https://patchblox.com/security/data/fix/linux/alas2023-2023-159.md) | Apr 13, 2023 |
| Linux | libpkgconf-devel amzn 2023 | 1.8.0-4.amzn2023.0.2 | [ALAS2023-2023-159](https://patchblox.com/security/data/fix/linux/alas2023-2023-159.md) | Apr 13, 2023 |
| Linux | pkgconf Debian 12.15 (bookworm) | 1.8.1-1 | [DEBIAN-CVE-2023-24056](https://patchblox.com/security/data/fix/linux/debian-cve-2023-24056.md) | Jan 22, 2023 |
| Linux | pkgconf Debian 13.5 (trixie) | 1.8.1-1 | [DEBIAN-CVE-2023-24056](https://patchblox.com/security/data/fix/linux/debian-cve-2023-24056.md) | Jan 22, 2023 |
| Linux | pkgconf Debian 14 | 1.8.1-1 | [DEBIAN-CVE-2023-24056](https://patchblox.com/security/data/fix/linux/debian-cve-2023-24056.md) | Jan 22, 2023 |
| Linux | pkgconf amzn 2023 | 1.8.0-4.amzn2023.0.2 | [ALAS2023-2023-159](https://patchblox.com/security/data/fix/linux/alas2023-2023-159.md) | Apr 13, 2023 |
| Linux | pkgconf-debuginfo amzn 2023 | 1.8.0-4.amzn2023.0.2 | [ALAS2023-2023-159](https://patchblox.com/security/data/fix/linux/alas2023-2023-159.md) | Apr 13, 2023 |
| Linux | pkgconf-debugsource amzn 2023 | 1.8.0-4.amzn2023.0.2 | [ALAS2023-2023-159](https://patchblox.com/security/data/fix/linux/alas2023-2023-159.md) | Apr 13, 2023 |
| Linux | pkgconf-m4 amzn 2023 | 1.8.0-4.amzn2023.0.2 | [ALAS2023-2023-159](https://patchblox.com/security/data/fix/linux/alas2023-2023-159.md) | Apr 13, 2023 |
| Linux | pkgconf-pkg-config amzn 2023 | 1.8.0-4.amzn2023.0.2 | [ALAS2023-2023-159](https://patchblox.com/security/data/fix/linux/alas2023-2023-159.md) | Apr 13, 2023 |

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Data as of 2026-11-09T19:38:12Z 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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