Bug 2546566 (CVE-2026-75818)

Summary: CVE-2026-75818 aspell: aspell: Denial of Service via crafted compressed file in prezip-bin
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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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 GNU Aspell's prezip-bin utility. The decompression component does not properly validate buffer space when decompressing input files. An attacker could convince a user to process a specially crafted compressed file, triggering out-of-bounds memory operations that cause memory corruption and a Denial of Service (DoS) through an application crash.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2546605    
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Description OSIDB Bzimport 2026-10-06 11:02:05 UTC 
GNU Aspell prezip-bin contains a heap-based buffer overflow vulnerability in the decompressor in prog/prezip.c. The decompressor does not properly check buffer space, so a crafted compressed file can cause out-of-bounds read and write operations on the heap. An attacker who convinces a user to process a malicious compressed file with prezip-bin can trigger memory corruption, leading to a processs crash.



This issue was fixed in commit 15b188437f9e0192d4ac4472ad66a4e2f62a782f which will be released in version 0.60.8.3.