CVE-2015-8970 Null dereference in n/a
Local attackers can crash the system by triggering a NULL pointer dereference in the Linux kernel's AF_ALG socket handling without providing a key.
- 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-2015-8970?
CVE-2015-8970 is a medium-severity vulnerability in Linux kernel, published on 28 Nov 2016. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
crypto/algif_skcipher.c in the Linux kernel before 4.4.2 does not verify that a setkey operation has been performed on an AF_ALG socket before an accept system call is processed, which allows local users to cause a denial of service (NULL pointer dereference and system crash) via a crafted application that does not supply a key, related to the lrw_crypt function in crypto/lrw.c.
Weakness: CWE-476
Which versions are affected by CVE-2015-8970?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2015-8970?
Apply the vendor's patch.
Is CVE-2015-8970 being exploited?
There is no known exploitation of CVE-2015-8970 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2015-8970, GHSA-552p-pmcq-pm57, UBUNTU-CVE-2015-8970.