CVE-2018-7566 Memory corruption in n/a

High 7.8 Published 30 Mar 2018 Updated 5 Aug 2024

A local attacker can trigger a buffer overflow in the Linux kernel sound subsystem to potentially execute arbitrary code or escalate privileges.

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-2018-7566?

CVE-2018-7566 is a high-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 30 Mar 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The Linux kernel 4.15 has a Buffer Overflow via an SNDRV_SEQ_IOCTL_SET_CLIENT_POOL ioctl write operation to /dev/snd/seq by a local user.

Weakness: CWE-362, CWE-119

Which versions are affected by CVE-2018-7566?

It affects 12 products.

Linux distribution packages (3)

`kgraft-patch-SLE12-SP1_Update_26` SUSE:Linux Enterprise Server 12 SP1-LTSS	All versions	`2-2.1`
`kgraft-patch-SLE12_Update_33` SUSE:Linux Enterprise Server 12-LTSS	All versions	`2-2.1`
`kgraft-patch-SLE12-SP1_Update_26` SUSE:Linux Enterprise Server for SAP Applications 12 SP1	All versions	`2-2.1`

Products include Canonical Ubuntu Linux, Debian Debian Linux, Linux kernel, Oracle Communications Eagle Application Processor, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server and 6 more.

How do I fix CVE-2018-7566?

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-2018-7566 being exploited?

There is no known exploitation of CVE-2018-7566 in the wild and no public exploit code.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as DEBIAN-CVE-2018-7566, GHSA-qwh3-x82w-5462, SUSE-SU-2018:0991-1, SUSE-SU-2018:1035-1, UBUNTU-CVE-2018-7566.