Bug 2412648 (CVE-2025-60753)

Summary: CVE-2025-60753 libarchive: bsdtar hangs and OOMs with zero-length pattern matches
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A vulnerability in apply_substitution() function in libarchive's bsdtar allows crafted -s substitution rules to repeatedly match a zero-length substring and append replacements without advancing the input pointer. When the rule uses the global /g flag (or an explicitly empty pattern), this leads to unbounded output allocation and eventual process OOM (Denial of Service). Upgrade to libarchive 3.8.1 or apply a patch that prevents zero-length match loops or rejects empty patterns.
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Bug Depends On: 2413030, 2413031, 2413032, 2413033, 2413034, 2413035, 2413036, 2413037    
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Description OSIDB Bzimport 2025-11-05 16:01:29 UTC 
An issue was discovered in libarchive bsdtar before version 3.8.1 in function apply_substitution in file tar/subst.c when processing crafted -s substitution rules. This can cause unbounded memory allocation and lead to denial of service (Out-of-Memory crash).