Use After Free in Linux Kernel
CVE-2016-9794
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.
Vulnerability class: Race Condition
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (24.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 24.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Issue Tracking)
- lists.opensuse.org/opensuse-security-announce/2016-12/msg00057.html (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2016-12/msg00088.html (vendor-advisory, Third Party Advisory)
- patchwork.kernel.org/patch/8752621/ (Issue Tracking)
- source.android.com/security/bulletin/2017-05-01 (Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2016-12/msg00072.html (vendor-advisory, Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2016-2574.html (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2016-12/msg00062.html (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2016-12/msg00075.html (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2016-12/msg00081.html (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2016-9794?
- CVE-2016-9794 is a high-severity vulnerability in Linux Kernel, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 7.8/10. Published 2016-12-28.
- How severe is CVE-2016-9794?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2016-9794 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.