CVE-2017-2618

Description

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.

Categories

5.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.05%
Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory kernel.org
Affected: Linux kernel
Published at:
Updated at:

References

Link Tags
https://marc.info/?l=selinux&m=148588165923772&w=2 patch mailing list third party advisory
https://www.debian.org/security/2017/dsa-3791 third party advisory vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2618 patch third party advisory issue tracking
https://access.redhat.com/errata/RHSA-2017:0932 third party advisory vendor advisory
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=0c461cb727d146c9ef2d3e86214f498b78b7d125 patch vendor advisory
https://access.redhat.com/errata/RHSA-2017:0933 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2017:0931 third party advisory vendor advisory
http://www.securityfocus.com/bid/96272 third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2017-2618?
CVE-2017-2618 has been scored as a medium severity vulnerability.
How to fix CVE-2017-2618?
To fix CVE-2017-2618, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-2618 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-2618 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-2618?
CVE-2017-2618 affects Linux kernel.
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