CVE-2016-9794

Description

Race condition in the snd_pcm_period_elapsed function in sound/core/pcm_lib.c in the ALSA subsystem in the Linux kernel before 4.7 allows local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via a crafted SNDRV_PCM_TRIGGER_START command.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.05%
Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory kernel.org Vendor Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1401494 issue tracking
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00057.html third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00088.html third party advisory vendor advisory
https://patchwork.kernel.org/patch/8752621/ issue tracking
https://source.android.com/security/bulletin/2017-05-01 third party advisory
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00072.html third party advisory vendor advisory
http://rhn.redhat.com/errata/RHSA-2016-2574.html third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00062.html third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00075.html third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00081.html third party advisory vendor advisory
http://www.openwall.com/lists/oss-security/2016/12/03/2 patch mailing list
https://github.com/torvalds/linux/commit/3aa02cb664c5fb1042958c8d1aa8c35055a2ebc4 patch vendor advisory
http://www.securityfocus.com/bid/94654 third party advisory vdb entry
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3aa02cb664c5fb1042958c8d1aa8c35055a2ebc4 patch vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00091.html third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2016-9794?
CVE-2016-9794 has been scored as a high severity vulnerability.
How to fix CVE-2016-9794?
To fix CVE-2016-9794, 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-2016-9794 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2016-9794 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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