Bug 2391338 (CVE-2025-58050)

Summary: CVE-2025-58050 pcre2: PCRE2: heap-buffer-overflow read in match_ref due to missing boundary restoration in SCS
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, kshier, stcannon, yguenane
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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In pcre2 library, there is a vulnerability in the code that causes a heap-buffer-overflow. This arises from using the special verb - Scan-SubString together with (*ACCEPT) which causes an out-of-bounds read. This could be exploited by an attacker through crafting a pattern using this combination to trigger the heap-buffer overflow.
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Description OSIDB Bzimport 2025-08-27 19:01:17 UTC 
The PCRE2 library is a set of C functions that implement regular expression pattern matching. In version 10.45, a heap-buffer-overflow read vulnerability exists in the PCRE2 regular expression matching engine, specifically within the handling of the (*scs:...) (Scan SubString) verb when combined with (*ACCEPT) in src/pcre2_match.c. This vulnerability may potentially lead to information disclosure if the out-of-bounds data read during the memcmp affects the final match result in a way observable by the attacker. This issue has been resolved in version 10.46.