High [CVE-2026-73143] Denial of service via malformed rtl_tcp greeting
This high-severity Red Hat Linux advisory covers CVE-2026-73143.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published Record updated
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Summary
A flaw was found in svxlink's RtlTcp component. A malformed rtl_tcp greeting from a remote source triggers an unconditional exit(1) call, causing the entire svxlink daemon to terminate.
A remote attacker can exploit this to achieve a complete denial of service of the repeater controller. svxlink is not shipped in any Red Hat Enterprise product. It is available in Fedora as a community-maintained package.
Red Hat severity: Important. Weakness: CWE-617.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 3 days 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 3 days ago·verify at source
Mitigation checklist
- Update svxlink to version 26.05.1 or later.
Official advisory · high-confidence parse· fetched 3 days ago·verify at source
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