CVE-2017-17855 Memory corruption in n/a
Local attackers can exploit improper pointer usage in the Linux kernel BPF verifier to cause memory corruption, leading to denial of service or potential code execution.
- 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-2017-17855?
CVE-2017-17855 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 23 Dec 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
kernel/bpf/verifier.c in the Linux kernel through 4.14.8 allows local users to cause a denial of service (memory corruption) or possibly have unspecified other impact by leveraging improper use of pointers in place of scalars.
Weakness: CWE-119
Which versions are affected by CVE-2017-17855?
It affects 2 products.
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2017-17855?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2017-17855 being exploited?
There is no known exploitation of CVE-2017-17855 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2017-17855, GHSA-p984-v28j-p56q.