CVE-2015-8839 Race condition in n/a

What is CVE-2015-8839?

CVE-2015-8839 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 2 May 2016. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Multiple race conditions in the ext4 filesystem implementation in the Linux kernel before 4.5 allow local users to cause a denial of service (disk corruption) by writing to a page that is associated with a different user's file after unsynchronized hole punching and page-fault handling.

Weakness: CWE-362

Which versions are affected by CVE-2015-8839?

It affects 2 products.

Products include Canonical Ubuntu Linux, Linux kernel.

How do I fix CVE-2015-8839?

Upgrade to a fixed version.

Is CVE-2015-8839 being exploited?

There is no known exploitation of CVE-2015-8839 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-2015-8839, GHSA-jx35-8v43-xcjq, UBUNTU-CVE-2015-8839.