CVE-2019-15031 Information disclosure in n/a

What is CVE-2019-15031?

CVE-2019-15031 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 13 Sep 2019. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel through 5.2.14 on the powerpc platform, a local user can read vector registers of other users' processes via an interrupt. To exploit the venerability, a local user starts a transaction (via the hardware transactional memory instruction tbegin) and then accesses vector registers. At some point, the vector registers will be corrupted with the values from a different local Linux process, because MSR_TM_ACTIVE is misused in arch/powerpc/kernel/process.c.

Weakness: CWE-662

Which versions are affected by CVE-2019-15031?

It affects 4 products.

Products include Canonical Ubuntu Linux, Linux kernel, Opensuse Leap, Redhat Enterprise Linux.

How do I fix CVE-2019-15031?

Apply the vendor's patch.

Is CVE-2019-15031 being exploited?

There is no known exploitation of CVE-2019-15031 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-2019-15031, GHSA-68fj-98v6-jx78, UBUNTU-CVE-2019-15031.