CVE-2018-18954 Memory corruption in n/a

Medium 5.5 Published 15 Nov 2018 Updated 5 Aug 2024

Out-of-bounds write or read in QEMU's PowerNV LPC emulation allows attackers to execute arbitrary code or cause denial of service.

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-2018-18954?

CVE-2018-18954 is a medium-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 15 Nov 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The pnv_lpc_do_eccb function in hw/ppc/pnv_lpc.c in Qemu before 3.1 allows out-of-bounds write or read access to PowerNV memory.

Weakness: CWE-787, CWE-125

Which versions are affected by CVE-2018-18954?

It affects 3 products.

Products include Canonical Ubuntu Linux, Opensuse Leap, Qemu Qemu.

How do I fix CVE-2018-18954?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2018-18954 being exploited?

There is no known exploitation of CVE-2018-18954 in the wild and no public exploit code.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as DEBIAN-CVE-2018-18954, GHSA-x3wx-mf88-5pm7, UBUNTU-CVE-2018-18954.