Bug 2572558 (CVE-2026-116322)

Summary: CVE-2026-116322 postgresql: postgresql: Denial of Service via improper locking during startup processing
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in PostgreSQL. An unauthenticated remote attacker can cause a Denial of Service (DoS) by triggering an unexpected server restart. This issue occurs due to improper locking during startup processing when an authentication timeout occurs while a lock is held during cancel handling.
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Description OSIDB Bzimport 2026-11-12 14:33:23 UTC
Improper locking in PostgreSQL startup processing allows an unauthenticated network client to trigger a server restart, via arranging for authentication_timeout to arrive while it holds a spinlock during cancel handling.  Within major version 18, minor versions before PostgreSQL 18.7 are affected.  Versions before PostgreSQL 18 are unaffected.