CVE-2014-7843

Description

The __clear_user function in arch/arm64/lib/clear_user.S in the Linux kernel before 3.17.4 on the ARM64 platform allows local users to cause a denial of service (system crash) by reading one byte beyond a /dev/zero page boundary.

Category

4.9
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.09%
Vendor Advisory kernel.org Vendor Advisory redhat.com Vendor Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.openwall.com/lists/oss-security/2014/11/13/5 mailing list
https://github.com/torvalds/linux/commit/97fc15436b36ee3956efad83e22a557991f7d19d patch vendor advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=97fc15436b36ee3956efad83e22a557991f7d19d
https://bugzilla.redhat.com/show_bug.cgi?id=1163744 patch vendor advisory
http://www.securityfocus.com/bid/71082 vdb entry
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.17.4 vendor advisory
http://secunia.com/advisories/62305 third party advisory

Frequently Asked Questions

What is the severity of CVE-2014-7843?
CVE-2014-7843 has been scored as a medium severity vulnerability.
How to fix CVE-2014-7843?
To fix CVE-2014-7843, 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-2014-7843 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2014-7843 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.
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