CVE-2014-7975 Privilege escalation in n/a

What is CVE-2014-7975?

CVE-2014-7975 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 13 Oct 2014. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The do_umount function in fs/namespace.c in the Linux kernel through 3.17 does not require the CAP_SYS_ADMIN capability for do_remount_sb calls that change the root filesystem to read-only, which allows local users to cause a denial of service (loss of writability) by making certain unshare system calls, clearing the / MNT_LOCKED flag, and making an MNT_FORCE umount system call.

Which versions are affected by CVE-2014-7975?

It affects 2 products.

Products include Canonical Ubuntu Linux, Linux kernel.

How do I fix CVE-2014-7975?

Apply the vendor's patch.

Is CVE-2014-7975 being exploited?

There is no known exploitation of CVE-2014-7975 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-2014-7975, GHSA-jvc4-gpm6-jw84, UBUNTU-CVE-2014-7975.