Bug 2443482 (CVE-2026-28419)

Summary: CVE-2026-28419 vim: Vim: Information disclosure and denial of service via malformed tags 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: adudiak, dwojewod, kshier, stcannon, teagle, timothy.a.meader, yguenane
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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A flaw was found in Vim, an open-source command-line text editor. This vulnerability, a heap-based buffer underflow, occurs when Vim processes a specially crafted Emacs-style tags file. If a malicious file with a delimiter at the start of a line is opened, Vim attempts to read memory outside its designated area. This could lead to the disclosure of sensitive information or cause the application to crash, resulting in a denial of service.
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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: 2443486, 2443495, 2443790    
Bug Blocks:    

Description OSIDB Bzimport 2026-02-27 23:02:41 UTC 
Vim is an open source, command line text editor. Prior to version 9.2.0075, a heap-based buffer underflow exists in Vim's Emacs-style tags file parsing logic. When processing a malformed tags file where a delimiter appears at the start of a line, Vim attempts to read memory immediately preceding the allocated buffer. Version 9.2.0075 fixes the issue.