CVE-2017-2647 Null dereference in n/a
Local attackers can exploit a NULL pointer dereference in the Linux kernel KEYS subsystem to escalate privileges or crash the system.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-2647?
CVE-2017-2647 is a high-severity vulnerability in Linux kernel, published on 31 Mar 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The KEYS subsystem in the Linux kernel before 3.18 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving a NULL value for a certain match field, related to the keyring_search_iterator function in keyring.c.
Weakness: CWE-476
Which versions are affected by CVE-2017-2647?
It affects 1 product.
Linux distribution packages (7)
kernel Red Hat:rhel_aus:6.6::server | All versions | 0:2.6.32-504.84.1.el6 |
kernel-debug Red Hat:rhel_aus:6.6::server | All versions | 0:2.6.32-504.84.1.el6 |
kernel-debug-debuginfo Red Hat:rhel_aus:6.6::server | All versions | 0:2.6.32-504.84.1.el6 |
kernel-debug-devel Red Hat:rhel_aus:6.6::server | All versions | 0:2.6.32-504.84.1.el6 |
kernel-debuginfo Red Hat:rhel_aus:6.6::server | All versions | 0:2.6.32-504.84.1.el6 |
kernel-debuginfo-common-x86_64 Red Hat:rhel_aus:6.6::server | All versions | 0:2.6.32-504.84.1.el6 |
kernel-devel Red Hat:rhel_aus:6.6::server | All versions | 0:2.6.32-504.84.1.el6 |
Products include Linux kernel.
How do I fix CVE-2017-2647?
Apply the vendor's patch.
Is CVE-2017-2647 being exploited?
There is no known exploitation of CVE-2017-2647 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2017-2647, GHSA-6723-4j9m-72qg, RHSA-2020:3836, UBUNTU-CVE-2017-2647.