PostgreSQL GB18030 encoding validation can read one byte past end of allocation for text that fails validation
36807
27 January 2026
27 January 2026
CLOSED
MEDIUM
5.9 -- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVE-2025-4207
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Brocade Security Advisory ID |
BSA-2026-3050 |
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Component |
postgresql |
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Summary
Buffer over-read in PostgreSQL GB18030 encoding validation allows a database input provider to achieve temporary denial of service on platforms where a 1-byte over-read can elicit process termination. This affects the database server and also libpq. Versions before PostgreSQL 17.5, 16.9, 15.13, 14.18, and 13.21 are affected.
Products Affected
- Brocade SANnav versions before 2.4.0b
Products Not Affected
- Brocade FabricOS
[VEX Justification: Component_not_present] - Brocade ASCG
[VEX Justification: Vulnerable_code_not_in_execute_path]
Solution
- Security update provided in Brocade SANnav 2.4.0b and 3.0.0
Revision History
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Version |
Change |
Date |
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1.0 |
Initial Publication |
January 27, 2026 |
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