golang-github-jackc-pgproto3: A flaw was found in pgproto3
CVE-2026-4427 is fixed in 5 products on 1 platform, first by DEBIAN-CVE-2026-4427, released March 19, 2026. It is not reported as exploited. Patch Radar priority: High.
A flaw was found in pgproto3. A malicious or compromised PostgreSQL server can exploit this by sending a DataRow message with a negative field length. This input validation vulnerability can lead to a denial of service (DoS) due to a slice bounds out of range panic.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| alloy · sles 15.7 | 1.16.1-150700.15.20.1 | SUSE-SU-2026:2438-1 | Jun 17, 2026 |
| golang-github-jackc-pgproto3 · Debian 14 | 2.3.3-2 | DEBIAN-CVE-2026-4427 | Mar 19, 2026 |
| osbuild-composer · RHEL 9 | 0:165.1-2.el9_8 | RHSA-2026:22714 | Jun 24, 2026 |
| osbuild-composer · ol 10 | 0:176-1.0.1.el10_2 | ELSA-2026-22450 | Aug 13, 2026 |
| osbuild-composer · ol 9 | 0:175-1.0.1.el9_8 | ELSA-2026-22714 | Aug 5, 2026 |
| osbuild-composer · rocky 10 | 0:165.1-2.el10_2.rocky.0.1 | RLSA-2026:22450 | Jun 5, 2026 |
| osbuild-composer · rocky 9 | 0:165.1-2.el9_8.rocky.0.1 | RLSA-2026:22714 | Jun 11, 2026 |
| osbuild-composer-core · RHEL 9 | 0:165.1-2.el9_8 | RHSA-2026:22714 | Jun 24, 2026 |
| osbuild-composer-core · ol 10 | 0:176-1.0.1.el10_2 | ELSA-2026-22450 | Aug 13, 2026 |
| osbuild-composer-core · ol 9 | 0:175-1.0.1.el9_8 | ELSA-2026-22714 | Aug 5, 2026 |
| osbuild-composer-worker · RHEL 9 | 0:165.1-2.el9_8 | RHSA-2026:22714 | Jun 24, 2026 |
| osbuild-composer-worker · ol 10 | 0:176-1.0.1.el10_2 | ELSA-2026-22450 | Aug 13, 2026 |
| osbuild-composer-worker · ol 9 | 0:175-1.0.1.el9_8 | ELSA-2026-22714 | Aug 5, 2026 |
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