Bug 2558324 (CVE-2026-102486)

Summary: CVE-2026-102486 ntpsec: ntpsec: Denial of Service via out-of-bounds read in NTS extension field parsing
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in NTPsec. This flaw allows a remote attacker to cause a Denial of Service (DoS) by crashing the NTP daemon. The issue is caused by an out-of-bounds read vulnerability when parsing Network Time Security (NTS) extension fields that contain an Authenticator and Encrypted Extension Fields (AEEF) field with an oversized nonce length.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2562328, 2562330    
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Description OSIDB Bzimport 2026-10-21 15:27:55 UTC
Out-of-bounds read in NTS extension field parsing in NTPsec ntpd 1.1.4 through 1.2.5 allows a remote attacker to crash the daemon via an NTS Authenticator and Encrypted Extension Fields (AEEF) field with an oversized nonce length.