What’s Vulnerable › Vulnerabilities
CVE-2022-31625: Freeing unallocated memory in php_pgsql_free_params()
- Severity: high (CVSS 8.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 3.8% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2022-06-16 · updated 2026-06-17
- Weakness: CWE-590
Description
In PHP versions 7.4.x below 7.4.30, 8.0.x below 8.0.20, and 8.1.x below 8.1.7, when using Postgres database extension, supplying invalid parameters to the parametrized query may lead to PHP attempting to free memory using uninitialized data as pointers. This could lead to RCE vulnerability or denial of service.
Affected products
- Debian Linux: 10.0, 11.0
- PHP: from 7.4.0 before 7.4.30; from 8.0.0 before 8.0.20; from 8.1.0 before 8.1.7 — fixed in 7.4.30, 8.0.20, 8.1.7
How to fix
Upgrade to a fixed version: PHP 7.4.30, 8.0.20, 8.1.7. Check the vendor advisory for mitigations.
References
- https://bugs.php.net/bug.php?id=81720
- https://lists.debian.org/debian-lts-announce/2022/12/msg00030.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T4MMEEZYYAEHPQMZDFN44PHORJWJFZQ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZZTZQKRGEYJT5UB4FGG3MOE72SQUHSL4/
- https://security.gentoo.org/glsa/202209-20
- https://security.netapp.com/advisory/ntap-20220722-0005/
- https://www.debian.org/security/2022/dsa-5179
- https://bugs.php.net/bug.php?id=81720
- https://lists.debian.org/debian-lts-announce/2022/12/msg00030.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T4MMEEZYYAEHPQMZDFN44PHORJWJFZQ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZZTZQKRGEYJT5UB4FGG3MOE72SQUHSL4/
- https://security.gentoo.org/glsa/202209-20
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