CVE-2017-5669 Security feature bypass in n/a

What is CVE-2017-5669?

CVE-2017-5669 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 24 Feb 2017. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The do_shmat function in ipc/shm.c in the Linux kernel through 4.9.12 does not restrict the address calculated by a certain rounding operation, which allows local users to map page zero, and consequently bypass a protection mechanism that exists for the mmap system call, by making crafted shmget and shmat system calls in a privileged context.

Which versions are affected by CVE-2017-5669?

It affects 3 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Linux kernel.

How do I fix CVE-2017-5669?

Apply the vendor's patch.

Is CVE-2017-5669 being exploited?

There is no known exploitation of CVE-2017-5669 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-2017-5669, GHSA-xjq6-89c2-fjjf, UBUNTU-CVE-2017-5669.