Bug 2426394 (CVE-2025-11964)

Summary: CVE-2025-11964 libpcap: libpcap: Data corruption via out-of-bounds write on Windows
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: adudiak, kshier, stcannon, teagle, yguenane
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in libpcap on Windows. When libpcap converts a Windows error message containing 4-byte UTF-8 characters, the utf_16le_to_utf_8_truncated() function can write data beyond its allocated buffer. This out-of-bounds write can lead to data corruption, impacting the integrity of the system. Exploitation requires high privileges and local access, with high attack complexity.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2025-12-31 02:01:15 UTC
On Windows only, if libpcap needs to convert a Windows error message to UTF-8 and the message includes characters that UTF-8 represents using 4 bytes, utf_16le_to_utf_8_truncated() can write data beyond the end of the provided buffer.