What’s Vulnerable › Vulnerabilities

CVE-2016-5417

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-02-17 · updated 2026-06-17
• Weakness: CWE-399

Description

Memory leak in the __res_vinit function in the IPv6 name server management code in libresolv in GNU C Library (aka glibc or libc6) before 2.24 allows remote attackers to cause a denial of service (memory consumption) by leveraging partial initialization of internal resolver data structures.

Affected products

• GNU C Library (glibc): through 2.23

References

• http://www.openwall.com/lists/oss-security/2016/08/02/5
• http://www.securityfocus.com/bid/92257
• https://sourceware.org/bugzilla/show_bug.cgi?id=19257
• https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Ba=commitdiff%3Bh=2212c1420c92a33b0e0bd9a34938c9814a56c0f7
• https://www.sourceware.org/ml/libc-alpha/2016-08/msg00212.html
• http://www.openwall.com/lists/oss-security/2016/08/02/5
• http://www.securityfocus.com/bid/92257
• https://sourceware.org/bugzilla/show_bug.cgi?id=19257
• https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Ba=commitdiff%3Bh=2212c1420c92a33b0e0bd9a34938c9814a56c0f7
• https://www.sourceware.org/ml/libc-alpha/2016-08/msg00212.html

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