CVE-2016-9794
high
CVSS v3
7.8
CVSS v4 NEW
—
VIR risk
7.8
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.
Predictions
Exploit likelihood
75%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 4.7.2-1 |
| debian | bullseye | fixed | 4.7.2-1 |
| debian | forky | fixed | 4.7.2-1 |
| debian | sid | fixed | 4.7.2-1 |
| debian | trixie | fixed | 4.7.2-1 |
| linux-kernel | affected | 3.2.85 |
References
- 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
- https://www.suse.com/security/cve/CVE-2016-9794.html
- https://security-tracker.debian.org/tracker/CVE-2016-9794
CWEs
CWE-362 CWE-416
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.