Vulnerability in Linux Kernel
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 · last modified .
CVSS v2 metric
CVSS v2 base score 4.9 (Medium). Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.025 (83.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 83.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.025 · newest: 0.025 · change: 0.000
Affected products
- Linux Kernel
- Canonical Ubuntu Linux — versions 12.04
- Debian Linux — versions 7.0
- Red Hat Enterprise Linux — versions 6.0
Public proof-of-concept exploits
References
- www.debian.org/security/2015/dsa-3290 (vendor-advisory)
- www.ubuntu.com/usn/USN-2631-1 (vendor-advisory)
- www.ubuntu.com/usn/USN-2634-1 (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2015-09/msg00011.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2015-09/msg00009.html (vendor-advisory)
- www.ubuntu.com/usn/USN-2632-1 (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2015-09/msg00008.html (vendor-advisory)
- lists.fedoraproject.org/pipermail/package-announce/2015-May/158804.html (vendor-advisory)
- www.openwall.com/lists/oss-security/2015/05/02/5 (mailing-list)
- www.securitytracker.com/id/1033186 (vdb-entry)
Frequently asked questions
- What is CVE-2015-3636?
- CVE-2015-3636 is a vulnerability in Linux Kernel. Published 2015-08-06.
- Is CVE-2015-3636 known to be exploited?
- 44 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.