Bug 2302418 (CVE-2024-41957)

Summary: CVE-2024-41957 vim: Double-free/use-after-free vulnerability with Vim editor
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: abhraj, adudiak, kshier, omaciel, security-response-team, stcannon, yguenane
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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A double-free and use-after-free vulnerability was found in the Vim editor. This flaw exists due to the corresponding tagstack being used twice when closing the window and if the quick fix list belonging to that window is also cleared using the same tagstack data. In this instance, Vim will try to free the memory again, causing a crash.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2302482, 2302483    
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Description OSIDB Bzimport 2024-08-01 22:21:35 UTC 
Vim is an open source command line text editor. Vim < v9.1.0647 has double free in src/alloc.c:616. When closing a window, the corresponding tagstack data will be cleared and freed. However a bit later, the quickfix list belonging to that window will also be cleared and if that quickfix list points to the same tagstack data, Vim will try to free it again, resulting in a double-free/use-after-free access exception. Impact is low since the user must intentionally execute vim with several non-default flags,
but it may cause a crash of Vim. The issue has been fixed as of Vim patch v9.1.0647