Bug 2561036 (CVE-2026-104596)

Summary: CVE-2026-104596 libosmocore: libosmocore: Information disclosure via out-of-bounds read in GSM 04.80 parser
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 libosmocore. An out-of-bounds read vulnerability in the Global System for Mobile Communications (GSM) 04.80 supplementary-service parser allows for information disclosure. A remote attacker can exploit this flaw by sending specially crafted messages, enabling them to read memory beyond expected buffer boundaries and obtain sensitive information.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2565861, 2565862, 2565865    
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Description OSIDB Bzimport 2026-10-26 19:32:37 UTC
libosmocore through 1.14.1 contains out-of-bounds reads in the GSM 04.80 supplementary-service component parsers in src/gsm/gsm0480.c. This allows a remote attacker to obtain sensitive information.