CVE-2023-2163 Incorrect Verifier Branch Pruning Logic Leads To Arbitrary Read/Write In Linux Kernel and Lateral Privilege Escalation
Incorrect BPF verifier pruning allows arbitrary kernel memory read/write, enabling privilege escalation and container escape.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-2163?
CVE-2023-2163 is a critical vulnerability in Linux kernel, published on 20 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Incorrect verifier pruning in BPF in Linux Kernel >=5.4 leads to unsafe code paths being incorrectly marked as safe, resulting in arbitrary read/write in kernel memory, lateral privilege escalation, and container escape.
Weakness: CWE-682
Which versions are affected by CVE-2023-2163?
It affects 1 product.
Linux distribution packages (1)
kernel-livepatch-SLE15-SP2_Update_41 SUSE:Linux Enterprise Live Patching 15 SP2 | All versions | 3-150200.2.1 |
Products include Linux kernel.
How do I fix CVE-2023-2163?
Apply the vendor's patch.
Is CVE-2023-2163 being exploited?
There is no known exploitation of CVE-2023-2163 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-29941, DEBIAN-CVE-2023-2163, SUSE-SU-2023:4835-1, UBUNTU-CVE-2023-2163.