CVE-2015-4700 Denial of service in n/a
Local attackers can crash the Linux kernel by loading crafted BPF instructions that trigger a JIT compiler convergence issue.
- 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-2015-4700?
CVE-2015-4700 is a medium-severity denial of service vulnerability in Linux kernel, published on 31 Aug 2015. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The bpf_int_jit_compile function in arch/x86/net/bpf_jit_comp.c in the Linux kernel before 4.0.6 allows local users to cause a denial of service (system crash) by creating a packet filter and then loading crafted BPF instructions that trigger late convergence by the JIT compiler.
Weakness: CWE-17
Which versions are affected by CVE-2015-4700?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2015-4700?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2015-4700 being exploited?
There is no known exploitation of CVE-2015-4700 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2015-4700, GHSA-rwf7-qw8f-h66g, UBUNTU-CVE-2015-4700.