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CVE-2015-3636

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.

Published:May 2, 2015

Last Modified:Apr 12, 2025

EPS:Aug 6, 2015

EPSS Score:0.02202

CVSS Score:4.9

Affected Products

Vendor

Product

Action

Vendor

Canonical

Product

Ubuntu Linux

Canonical

Ubuntu Linux

Vendor

Debian

Product

Debian Linux

Debian

Debian Linux

Vendor

Linux

Product

Linux Kernel

Linux

Linux Kernel

Vendor

Redhat

Product

Enterprise Linux

Redhat

Enterprise Linux

Vendor

Redhat

Product

Enterprise Mrg

Redhat

Enterprise Mrg

Vendor

Redhat

Product

Rhel Aus

Redhat

Rhel Aus

Vendor

Redhat

Product

Rhel Eus

Redhat

Rhel Eus

Vendor

Redhat

Product

Rhel Extras Rt

Redhat

Rhel Extras Rt

Exploits

https://github.com/a7vinx/CVE-2015-3636 https://github.com/android-rooting-tools/libpingpong_exploit https://github.com/askk/libping_unhash_exploit_POC https://github.com/betalphafai/cve-2015-3636_crash https://github.com/debugfan/rattle_root https://github.com/fi01/CVE-2015-3636 https://github.com/ludongxu/cve-2015-3636

Common Weakness Enumeration

CWE-416 Use After Free

Common Attack Pattern Enumeration and Classification (CAPEC)

No CAPEC recorded yet

Related CVEs

CVE-2026-13476 (CVSS 7.3) — IBM Informix Dynamic Server 14.10, 15.0, and 12.10 could allow an unauthenticated user to execute arbitrary co…

CVE-2026-13367 (CVSS 7.8) — IBM Informix Dynamic Server 14.10, and 15.0 contain a local privilege escalation vulnerability in the oninit s…

CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …

CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…

CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…

CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…

CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…

CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…

CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…

CVE-2026-47330 (CVSS 3.3) — Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an u…

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a134f083e79fb4c3d0a925691e732c56911b4326

http://lists.fedoraproject.org/pipermail/package-announce/2015-May/157788.html

http://lists.fedoraproject.org/pipermail/package-announce/2015-May/157897.html

http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158804.html

http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00023.html

http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00011.html

http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00004.html

http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00007.html

http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00008.html

http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00009.html

http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00011.html

http://rhn.redhat.com/errata/RHSA-2015-1221.html

http://rhn.redhat.com/errata/RHSA-2015-1534.html

http://rhn.redhat.com/errata/RHSA-2015-1564.html

http://rhn.redhat.com/errata/RHSA-2015-1583.html

http://rhn.redhat.com/errata/RHSA-2015-1643.html

http://www.debian.org/security/2015/dsa-3290

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.3

http://www.openwall.com/lists/oss-security/2015/05/02/5

http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html

http://www.securityfocus.com/bid/74450

http://www.securitytracker.com/id/1033186

http://www.ubuntu.com/usn/USN-2631-1

http://www.ubuntu.com/usn/USN-2632-1

http://www.ubuntu.com/usn/USN-2633-1

http://www.ubuntu.com/usn/USN-2634-1

https://bugzilla.redhat.com/show_bug.cgi?id=1218074

https://github.com/torvalds/linux/commit/a134f083e79fb4c3d0a925691e732c56911b4326

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a134f083e79fb4c3d0a925691e732c56911b4326

http://lists.fedoraproject.org/pipermail/package-announce/2015-May/157788.html

http://lists.fedoraproject.org/pipermail/package-announce/2015-May/157897.html

http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158804.html

http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00023.html

http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00011.html

http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00004.html

http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00007.html

http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00008.html

http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00009.html

http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00011.html

http://rhn.redhat.com/errata/RHSA-2015-1221.html

http://rhn.redhat.com/errata/RHSA-2015-1534.html

http://rhn.redhat.com/errata/RHSA-2015-1564.html

http://rhn.redhat.com/errata/RHSA-2015-1583.html

http://rhn.redhat.com/errata/RHSA-2015-1643.html

http://www.debian.org/security/2015/dsa-3290

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.3

http://www.openwall.com/lists/oss-security/2015/05/02/5

http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html

http://www.securityfocus.com/bid/74450

http://www.securitytracker.com/id/1033186

http://www.ubuntu.com/usn/USN-2631-1

http://www.ubuntu.com/usn/USN-2632-1

http://www.ubuntu.com/usn/USN-2633-1

http://www.ubuntu.com/usn/USN-2634-1

https://bugzilla.redhat.com/show_bug.cgi?id=1218074

https://github.com/torvalds/linux/commit/a134f083e79fb4c3d0a925691e732c56911b4326

Common Vulnerability Scoring System

Attack Vector

Network

Adjacent

Local

Physical

Privileges Required

None

Low

High

User Interaction

None

Required

Scope

Unchanged

Changed

Confidentiality

None

Low

High

Integrity

None

Low

High

Availability

None

Low

High