Permissions, Privileges, and Access Controls in Linux kernel - CVE-2014-7826

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Main Vulnerability Database Vulnerabilities #VU41136

Permissions, Privileges, and Access Controls in Linux kernel - CVE-2014-7826

Published: November 10, 2014 / Updated: August 10, 2020


Vulnerability identifier: #VU41136
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2014-7826
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

kernel/trace/trace_syscalls.c in the Linux kernel through 3.17.2 does not properly handle private syscall numbers during use of the ftrace subsystem, which allows local users to gain privileges or cause a denial of service (invalid pointer dereference) via a crafted application.


Affected software

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-lts-trusty (Ubuntu package)
linux-lts-utopic (Ubuntu package)

How to mitigate CVE-2014-7826

Install update from vendor's website.

linux (Ubuntu package) - addressed in versions 3.2.0-74.109, 3.13.0-43.72, 3.16.0-28.37
linux-lts-trusty (Ubuntu package) - update to 3.13.0-43.72~precise1
linux-lts-utopic (Ubuntu package) - update to 3.16.0-28.37~14.04.1

External References

Related Security Bulletins