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CVE-2016-9794

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Date: December 28, 2016

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.

Language: C

Severity Score

Related Resources (19)

https://bugzilla.redhat.com/show_bug.cgi?id=1401494
https://access.redhat.com/security/cve/CVE-2016-9794
https://people.canonical.com/~ubuntu-security/cve/CVE-2016-9794
http://www.securityfocus.com/bid/94654
https://patchwork.kernel.org/patch/8752621/
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00081.html
https://nvd.nist.gov/vuln/detail/CVE-2016-9794
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00062.html
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00088.html
http://www.openwall.com/lists/oss-security/2016/12/03/2
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00091.html
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00075.html
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00057.html
https://source.android.com/security/bulletin/2017-05-01
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00072.html
http://rhn.redhat.com/errata/RHSA-2016-2574.html
https://github.com/torvalds/linux/commit/3aa02cb664c5fb1042958c8d1aa8c35055a2ebc4
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3aa02cb664c5fb1042958c8d1aa8c35055a2ebc4
https://www.mend.io/vulnerability-database/CVE-2016-9794

Severity Score

Weakness Type (CWE)

Race Conditions

CWE-362

Use After Free

CWE-416

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE
Additional information:

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