High [CVE-2026-18022] Arbitrary Code Execution via Integer Wraparound
This high-severity Red Hat Linux advisory covers CVE-2026-18022.
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Summary
Integer wraparound in IVFFlat index build in pgvector before 0.8.6 allows a database user to write data out-of-bounds, which could lead to arbitrary code execution. Only 32-bit systems are affected.
A flaw was found in pgvector. An integer wraparound vulnerability exists during the IVFFlat index build process.
This flaw allows a database user on a 32-bit system to write data outside of allocated memory buffers. Red Hat severity: Important — CVSS 8.8 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
Weakness: CWE-787. Red Hat lists Lightspeed Core; OpenShift Lightspeed; Red Hat Ansible Automation Platform 2; Red Hat Enterprise Linux 9; Red Hat Trusted Profile Analyzer as not affected.
- < 0.8.6
Official advisory · high-confidence parse· fetched 1 month ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists. Confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 1 month ago·verify at source
Mitigation
The source record does not include mitigation steps. That does not mean no fix exists. Read the vendor advisory below for the authoritative guidance.
Official advisory · high-confidence parse· fetched 1 month ago·verify at source
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