Bug 2494497

Summary: CVE-2026-56788 rtklib: RTKLIB 2.4.3 - Out-of-bounds Read via Negative Array Index in getcodepri [epel-all]
Product: [Fedora] Fedora EPEL Reporter: Keith Grant <kgrant>
Component: rtklibAssignee: Vasiliy Glazov <vascom2>
Status: NEW --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: epel10CC: vascom2
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["bc0988c2-d713-4f79-94fc-e5da5a61de93"]}
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On:    
Bug Blocks: 2493104    

Description Keith Grant 2026-06-29 16:43:13 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

RTKLIB through 2.4.3 contains an out-of-bounds read vulnerability in getcodepri function when processing unrecognized RINEX observation codes, allowing attackers to trigger denial of service. Crafted RINEX files with unknown observation types cause negative array indexing into the codepris table, resulting in reliable crashes and potential memory disclosure of adjacent global data.