CVE-2020-12659 Memory corruption in n/a
A local attacker with CAP_NET_ADMIN can trigger an out-of-bounds write in the Linux kernel XDP subsystem, potentially leading to code execution or privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-12659?
CVE-2020-12659 is a medium-severity memory corruption vulnerability in Linux kernel, published on 5 May 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An issue was discovered in the Linux kernel before 5.6.7. xdp_umem_reg in net/xdp/xdp_umem.c has an out-of-bounds write (by a user with the CAP_NET_ADMIN capability) because of a lack of headroom validation.
Weakness: CWE-787
Which versions are affected by CVE-2020-12659?
It affects 8 products.
Products include Linux kernel, Netapp Active Iq Unified Manager, Netapp Aff Baseboard Management Controller, Netapp Cloud Backup, Netapp Hci Baseboard Management Controller, Netapp Solidfire \& Hci Management Node and 2 more.
How do I fix CVE-2020-12659?
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-2020-12659 being exploited?
There is no known exploitation of CVE-2020-12659 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2020-12659, GHSA-wvg9-27w3-xhh7, UBUNTU-CVE-2020-12659.