Bug 2267700 (CVE-2024-2002)

Summary:	CVE-2024-2002 libdwarf: crashes randomly on fuzzed object
Product:	[Other] Security Response	Reporter:	ybuenos
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	Keywords:	Security
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	libdwarf-0.9.2	Doc Type:	If docs needed, set a value
Doc Text:	A double-free vulnerability was found in libdwarf. In a multiply-corrupted DWARF object, libdwarf may try to dealloc(free) an allocation twice, potentially causing unpredictable and various results.	Story Points:	---
Clone Of:		Environment:
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2267720
Bug Blocks:	2267723

Description ybuenos 2024-03-04 14:37:30 UTC

In a multiply-corrupted DWARF object libdwarf may try to dealloc(free) an allocation twice.
Results are unpredictable and various. This has been a possibility since we added code to prevent leaks when generating 'unattached' Dwarf_Error records (where there is no Dwarf_Debug available at the point of error).
The problem was introduced in libdwarf-0.1.0 in 2021.

Comment 1 ybuenos 2024-03-04 14:38:40 UTC

Flaw ID on github repo: DW202402-002

Comment 2 ybuenos 2024-03-04 16:23:51 UTC

Created libdwarf tracking bugs for this issue:

Affects: fedora-all [bug 2267720]