CVE-2016-9794 Information

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.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

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

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8