Bug 2553829 (CVE-2026-111271)

Summary: CVE-2026-111271 libmodplug: libmodplug: Denial of Service via crafted AMS audio file
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 libmodplug. This vulnerability allows an attacker to cause a Denial of Service (DoS) by crashing applications that rely on the library to process audio files. By enticing a user or automated system to load a specially crafted AMS (audio tracker) file, the decoder reads data past the end of the allocated memory buffer. This out-of-bounds read results in an immediate application crash and may disclose adjacent memory.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2554078, 2554080, 2554081, 2554082, 2554079    
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Description OSIDB Bzimport 2026-10-15 21:51:40 UTC 
libmodplug through 0.8.9.1 contains a heap-based out-of-bounds read vulnerability in CSoundFile::ReadAMS2() in src/load_ams.cpp that allows attackers to read adjacent heap memory via crafted AMS files. Attackers can supply an AMS module whose pattern effect bytes keep bit 7 set, driving the decoder past the input buffer and crashing any libmodplug consumer.