CVE-2019-14835 Memory corruption in Linux kernel

What is CVE-2019-14835?

CVE-2019-14835 is a high-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 17 Sep 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

A buffer overflow flaw was found, in versions from 2.6.34 to 5.2.x, in the way Linux kernel's vhost functionality that translates virtqueue buffers to IOVs, logged the buffer descriptors during migration. A privileged guest user able to pass descriptors with invalid length to the host when migration is underway, could use this flaw to increase their privileges on the host.

Weakness: CWE-120

Which versions are affected by CVE-2019-14835?

It affects 34 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Huawei Imanager Neteco, Huawei Imanager Neteco 6000, Huawei Manageone and 28 more.

How do I fix CVE-2019-14835?

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-2019-14835 being exploited?

There is no known exploitation of CVE-2019-14835 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2019-14835, GHSA-h3vw-f6h8-86mg, RHSA-2019:2827, RHSA-2019:2828, RHSA-2019:2829, RHSA-2019:2830 and 14 more.