CVE-2018-17972 Race condition in n/a

What is CVE-2018-17972?

CVE-2018-17972 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 3 Oct 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel through 4.18.11. It does not ensure that only root may inspect the kernel stack of an arbitrary task, allowing a local attacker to exploit racy stack unwinding and leak kernel task stack contents.

Weakness: CWE-362

Which versions are affected by CVE-2018-17972?

It affects 9 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Linux kernel, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus and 3 more.

How do I fix CVE-2018-17972?

Apply the vendor's patch.

Is CVE-2018-17972 being exploited?

There is no known exploitation of CVE-2018-17972 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-2018-17972, GHSA-qgp4-5xqg-pc3p, UBUNTU-CVE-2018-17972.