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…
Does this matter?
Lower severity and a low EPSS score (2.47%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 2.0
- 4.9 MEDIUMAV:L/AC:L/Au:N/C:N/I:N/A:C
- EPSS
- 2.47% probability · 84th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel · debian/debian linux · redhat/enterprise linux · canonical/ubuntu linux
- Source
- cve@mitre.org
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.