Denial of Service Vulnerability in GNU C Library by Vendor

CVE-2015-20109

Summary

The GNU C Library (glibc), specifically the end_pattern function invoked from internal_fnmatch, is susceptible to a vulnerability that allows context-dependent attackers to trigger a denial of service. This can be achieved through the fnmatch library function using specific patterns, such as **(!(). This issue has been misidentified in relation to another reported vulnerability (CVE-2015-8984), and while some Linux distributions may have addressed the latter, they may not have resolved this additional fnmatch-related issue, potentially exposing systems to application crashes.

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