CVE-2015-3636
MEDIUMEPSS 83th pctlDescription
The ping_unhash function in net/ipv4/ping.c in the Linux kernel before 4.0.3 does not initialize a certain list data structure during an unhash operation, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) by leveraging the ability to make a SOCK_DGRAM socket system call for the IPPROTO_ICMP or IPPROTO_ICMPV6 protocol, and then making a connect system call after a disconnect.
How to fix
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v2 Vector
No CVSS vector data available.
Exploit Intelligence
Elevated risk: more likely to be exploited than 83% of all known CVEs.
References
- git.kernel.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.opensuse.org
- lists.opensuse.org
- lists.opensuse.org
- lists.opensuse.org
- lists.opensuse.org
- lists.opensuse.org
- lists.opensuse.org
- rhn.redhat.com
- rhn.redhat.com
- rhn.redhat.com
- rhn.redhat.com
- rhn.redhat.com
- debian.org
- kernel.org
- openwall.com
- oracle.com
- securityfocus.com
- securitytracker.com
- ubuntu.com
- ubuntu.com
- ubuntu.com
- ubuntu.com
- bugzilla.redhat.com
- github.com
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.