CVE-2018-9415 Use after free in Android

What is CVE-2018-9415?

CVE-2018-9415 is a high-severity use after free vulnerability in Canonical Ubuntu Linux, published on 6 Nov 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In driver_override_store and driver_override_show of bus.c, there is a possible double free due to improper locking. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Product: Android Versions: Android kernel Android ID: A-69129004 References: Upstream kernel.

Weakness: CWE-415

Which versions are affected by CVE-2018-9415?

It affects 2 products.

Products include Canonical Ubuntu Linux, Google Android.

How do I fix CVE-2018-9415?

Apply the vendor's patch.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2018-9415 being exploited?

There is no known exploitation of CVE-2018-9415 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-2018-9415, GHSA-vfgj-wgwr-rg52, UBUNTU-CVE-2018-9415.