Bug 2546564 (CVE-2026-75819)

Summary: CVE-2026-75819 aspell: aspell: Denial of Service via crafted dictionary 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: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in aspell. When loading a binary dictionary file, the application fails to validate offset fields from the file header against buffer boundaries. By convincing a user to process a specially crafted dictionary file, an attacker can trigger an out-of-bounds read, leading to an application crash that results in a Denial of Service (DoS) or the potential disclosure of heap memory contents.
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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: 2546577    
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Description OSIDB Bzimport 2026-10-06 11:01:46 UTC 
GNU Aspell contains an out-of-bounds read vulnerability in ReadOnlyDict::load() in readonly_ws.cpp. When loading a binary .rws dictionary file, it uses offset fields from the file header as byte indices into a heap buffer without validating their bounds. An attacker can trigger this by convincing a user to run aspell with a crafted dictionary file supplied through --master, --dict-dir, or configuration options, leading to heap memory disclosure or a denial of service via application crash.



This issue was fixed in commit 941953b25031bc9104e83f58e138a664b8dedc3f which will be released in version 0.60.8.3.