Bug 2517522 (CVE-2026-71979)

Summary: CVE-2026-71979 indilib/indi: libindi: INDI indiserver: Denial of Service via malformed XML tag parsing
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
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Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in INDI indiserver. An unauthenticated remote attacker can exploit a stack buffer overflow vulnerability by sending specially crafted XML with oversized, mismatched tags. This can lead to an unbounded write operation, causing the daemon to crash and disrupting all active client and driver sessions, resulting in a denial of service.
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Bug Depends On: 2528497, 2528498    
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Description OSIDB Bzimport 2026-08-17 18:00:09 UTC 
INDI (Instrument Neutral Distributed Interface) indiserver through 2.2.4.2, fixed in commit 96bbd7f, contains a stack buffer overflow vulnerability that allows unauthenticated remote attackers to crash the daemon by sending malformed XML with mismatched tags whose names exceed 1024 bytes. Attackers can send a single TCP packet on port 7624 with mismatched XML tags to trigger an unbounded sprintf() write into a fixed 1024-byte stack buffer in MsgQueue.cpp, terminating the daemon and disrupting all active client and driver sessions.