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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | pkgconf | 1.8.1-1 | — |
| Debian 13 | pkgconf | 1.8.1-1 | — |
| Debian 12 | pkgconf | 1.8.1-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | pkgconf | No fix yet | — |
| Ubuntu 20.04 LTS | pkgconf | No fix yet | — |
| Ubuntu 18.04 LTS | pkgconf | No fix yet | — |
| Ubuntu 16.04 LTS | pkgconf | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP3 | pkgconf | 1.5.3-bp153.2.3.1 | openSUSE-SU-2023:0043-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.4 | pkgconf | 1.8.0-150400.3.3.1 | SUSE-SU-2023:0611-1 |
| openSUSE Leap 15.3 | pkgconf | 1.5.3-bp153.2.3.1 | openSUSE-SU-2023:0043-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | pkgconf | 1.9.4-r0 | — |
| Alpine v3.23 | pkgconf | 1.9.4-r0 | — |
| Alpine v3.22 | pkgconf | 1.9.4-r0 | — |
| Alpine v3.21 | pkgconf | 1.9.4-r0 | — |
| Alpine v3.20 | pkgconf | 1.9.4-r0 | — |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | pkgconf | 1.9.4-r0 | — |
| Alpine v3.18 | pkgconf | 1.9.4-r0 | — |
| Alpine v3.17 | pkgconf | 1.9.4-r0 | — |
| Alpine v3.16 | pkgconf | 1.8.1-r0 | — |
| Alpine v3.15 | pkgconf | 1.8.1-r0 | — |
| Alpine v3.14 | pkgconf | 1.7.4-r1 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | pkgconf +4 | 1.8.0-4.amzn2023.0.2 | ALAS2023-2023-159 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | pkgconf | 1.8.0-3 | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | pkgconf | 1.9.4-r0 | — |
Advisories 3
- SUSE-SU-2023:0611-1 Security update for pkgconf SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2023:0043-1 Security update for pkgconf SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2023-2023-159 Moderate: pkgconf security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Apr 19, 2023