CVE-2014-7975 Affecting perf package, versions <0:3.10.0-693.el7


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-CENTOS7-PERF-2085110
  • published26 Jul 2021
  • disclosed8 Oct 2014

Introduced: 8 Oct 2014

CVE-2014-7975  (opens in a new tab)

How to fix?

Upgrade Centos:7 perf to version 0:3.10.0-693.el7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

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.

CVSS Scores

version 3.1