Bug 2513805 (CVE-2026-73150)

Summary: CVE-2026-73150 svxlink: svxlink: Buffer overflow in APRS message construction
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in svxlink's LocationInfo/APRS functionality. The updateQsoStatus() function in AprsTcpClient.cpp formats a remote EchoLink station's callsign and info string into a fixed 80-byte stack buffer using sprintf without length checks. A remote attacker controlling an EchoLink station can supply a long callsign or info string to overflow the buffer, potentially enabling code execution.
 Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2513822    
Bug Blocks:    

Description OSIDB Bzimport 2026-08-11 07:32:30 UTC 
A flaw was found in svxlink's LocationInfo/APRS functionality. In AprsTcpClient.cpp, updateQsoStatus() formats a remote EchoLink station's callsign and info into a fixed 80-byte stack buffer using sprintf. A long callsign or info string overflows the buffer, potentially enabling code execution. The overflow has existed since 2010. Fixed in version 26.05.1.