medium
5.5
CWE
193 682
Advisory Published
CVE Published
Updated

CVE-2017-2618

First published: Tue Feb 07 2017(Updated: )

A flaw was found in the Linux kernel's handling of clearing SELinux attributes on /proc/pid/attr files before 4.9.10. An empty (null) write to this file can crash the system by causing the system to attempt to access unmapped kernel memory.

Credit: secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
Linux Linux kernel<4.9.10
Debian Debian Linux=8.0
Redhat Enterprise Linux=7.0
Redhat Enterprise Linux Desktop=7.0
Redhat Enterprise Linux Server=7.0
Redhat Enterprise Linux Server Aus=7.3
Redhat Enterprise Linux Server Aus=7.4
Redhat Enterprise Linux Server Eus=7.3
Redhat Enterprise Linux Server Eus=7.4
Redhat Enterprise Linux Server Eus=7.5
Redhat Enterprise Linux Workstation=7.0
debian/linux
5.10.223-1
5.10.226-1
6.1.115-1
6.1.119-1
6.12.5-1
6.12.6-1

Remedy

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2618

Remedy

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=0c461cb727d146c9ef2d3e86214f498b78b7d125

Remedy

https://marc.info/?l=selinux&m=148588165923772&w=2

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Reference Links

Frequently Asked Questions

  • What is CVE-2017-2618?

    CVE-2017-2618 is a vulnerability in the Linux kernel's handling of clearing SELinux attributes on /proc/pid/attr files.

  • How severe is CVE-2017-2618?

    CVE-2017-2618 has a severity rating of medium.

  • What is the impact of CVE-2017-2618?

    An empty (null) write to /proc/pid/attr files can crash the system by causing the system to attempt to access unmapped kernel memory.

  • How can I fix CVE-2017-2618?

    To fix CVE-2017-2618, update your Linux kernel to version 4.10 or higher.

  • Where can I find more information about CVE-2017-2618?

    You can find more information about CVE-2017-2618 in the following references: <ul><li><a href="https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=0c461cb727d146c9ef2d3e86214f498b78b7d125">Git commit</a></li><li><a href="https://marc.info/?l=selinux&m=148588165923772&w=2">SELinux mailing list</a></li><li><a href="https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1419916#c2">Red Hat Bugzilla</a></li></ul>

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