high
7.8
CWE
476
Advisory Published
CVE Published
Updated

CVE-2014-7826: Null Pointer Dereference

First published: Fri Nov 07 2014(Updated: )

An out-of-bounds memory access flaw, CVE-2014-7825, was found in the syscall tracing functionality of the Linux kernel's perf subsystem. A local, unprivileged user could use this flaw to crash the system. Additionally, an out-of-bounds memory access flaw, CVE-2014-7826, was found in the syscall tracing functionality of the Linux kernel's ftrace subsystem. On a system with ftrace syscall tracing enabled, a local, unprivileged user could use this flaw to crash the system, or escalate their privileges.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/kernel<0:2.6.32-504.16.2.el6
0:2.6.32-504.16.2.el6
redhat/kernel<0:3.10.0-229.el7
0:3.10.0-229.el7
redhat/kernel-rt<0:3.10.58-rt62.58.el6
0:3.10.58-rt62.58.el6
Linux Kernel>=2.6.32<3.2.65
Linux Kernel>=3.3<3.4.106
Linux Kernel>=3.5<3.10.60
Linux Kernel>=3.11<3.12.33
Linux Kernel>=3.13<3.14.24
Linux Kernel>=3.15<3.16.35
Linux Kernel>=3.17<3.17.3
Evergreen ILS=11.4
SUSE Linux Enterprise Server=11-sp2
debian/linux
5.10.223-1
5.10.234-1
6.1.123-1
6.1.128-1
6.12.12-1
6.12.17-1

Remedy

http://www.openwall.com/lists/oss-security/2014/11/06/11

Remedy

https://bugzilla.redhat.com/show_bug.cgi?id=1161565

Remedy

https://github.com/torvalds/linux/commit/086ba77a6db00ed858ff07451bedee197df868c9

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2014-7826?

    CVE-2014-7826 is considered a high severity vulnerability due to its potential to crash the system.

  • How do I fix CVE-2014-7826?

    To fix CVE-2014-7826, ensure you update your Linux kernel to the latest patched version from your distribution.

  • Who is affected by CVE-2014-7826?

    CVE-2014-7826 affects local unprivileged users on systems running vulnerable versions of the Linux kernel.

  • What types of systems are vulnerable to CVE-2014-7826?

    Systems running specific versions of the Linux kernel, particularly those between 2.6.32 and 3.10.60, are vulnerable to CVE-2014-7826.

  • What is the impact of exploiting CVE-2014-7826?

    Exploiting CVE-2014-7826 can lead to a denial of service by crashing the affected system.

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