Bug 2546565 (CVE-2026-75820)

Summary: CVE-2026-75820 aspell: aspell: Denial of Service via integer truncation in wordlist processing
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: low    
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. An integer truncation issue in the personal wordlist processing logic causes word lengths that are multiples of 256 bytes to be stored incorrectly, leading to heap memory corruption. An attacker could exploit this vulnerability by convincing a user to run aspell with a crafted wordlist, resulting in an application crash and Denial of Service (DoS).
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2546612    
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Description OSIDB Bzimport 2026-10-06 11:01:56 UTC 
GNU Aspell contains an integer truncation vulnerability in the WritableDict::add() function in modules/speller/default/writable.cpp. When loading a personal wordlist, the word length is stored as a single byte, causing truncation for words whose length is a multiple of 256. This leads to heap corruption. An attacker can exploit this by convincing a user to run aspell with a crafted personal wordlist containing such a word, resulting in denial of service.



This issue was fixed in commit 782ce94e4dc71eaec4ee1bd945eb3b9c47c5387d which will be released in version 0.60.8.3.