CVE-2017-15115 Use after free in Linux kernel before 4.14-rc6

What is CVE-2017-15115?

CVE-2017-15115 is a high-severity use after free vulnerability in Canonical Ubuntu Linux, published on 15 Nov 2017. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The sctp_do_peeloff function in net/sctp/socket.c in the Linux kernel before 4.14 does not check whether the intended netns is used in a peel-off action, which allows local users to cause a denial of service (use-after-free and system crash) or possibly have unspecified other impact via crafted system calls.

Weakness: CWE-416

Which versions are affected by CVE-2017-15115?

It affects 4 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Linux kernel, Suse Linux Enterprise Server.

How do I fix CVE-2017-15115?

Upgrade to a fixed version.

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-2017-15115 being exploited?

There is no known exploitation of CVE-2017-15115 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-2017-15115, GHSA-chgx-7ppx-v6gh, UBUNTU-CVE-2017-15115.