Bug 2546605

Summary: CVE-2026-75818 aspell: aspell: Denial of Service via crafted compressed file in prezip-bin [fedora-all]
Product: [Fedora] Fedora Reporter: Laura Pardo <lpardo>
Component: aspellAssignee: Nikola Forró <nforro>
Status: CLOSED RAWHIDE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: low Docs Contact:
Priority: low    
Version: rawhideCC: db-sig, jchaloup, mschorm, nforro, pnemade
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["f44177f5-9132-4a76-9ae4-73ca6665ace9"]}
Fixed In Version: Doc Type: ---
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Clone Of: Environment:
Last Closed: 2026-11-01 21:38:27 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2546566    

Description Laura Pardo 2026-10-06 14:04:52 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.

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.
Comment 1 Michal Schorm 2026-11-01 21:38:27 UTC 
https://bodhi.fedoraproject.org/updates/FEDORA-2026-3f6f965e5c