CVE-2016-4578
UnknownEPSS 1.21%
Last modified
CVE-2016-4578 is a vulnerability of currently unknown severity. sound/core/timer.c in the Linux kernel through 4.6 does not initialize certain r1 data structures, which allows local users to obtain sensitive information from kernel stack memory via crafted use of the ALSA timer interface, related to the (1) snd_timer_user_ccallback and (2) snd_timer_user_tinterrupt functions.. EPSS estimates a 1.21% chance of exploitation in the next 30 days.
Description
sound/core/timer.c in the Linux kernel through 4.6 does not initialize certain r1 data structures, which allows local users to obtain sensitive information from kernel stack memory via crafted use of the ALSA timer interface, related to the (1) snd_timer_user_ccallback and (2) snd_timer_user_tinterrupt functions.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 4.6 |
| Canonical | Ubuntu Linux | 12.04 |
| Canonical | Ubuntu Linux | 14.04 |
| Canonical | Ubuntu Linux | 15.10 |
| Canonical | Ubuntu Linux | 16.04 |
| Debian | Debian Linux | 8.0 |
| Redhat | Enterprise Linux Desktop | 7.0 |
| Redhat | Enterprise Linux Server | 7.0 |
| Redhat | Enterprise Linux Server Aus | 7.3 |
| Redhat | Enterprise Linux Server Aus | 7.4 |
| Redhat | Enterprise Linux Server Aus | 7.6 |
| Redhat | Enterprise Linux Server Eus | 7.3 |
| Redhat | Enterprise Linux Server Eus | 7.4 |
| Redhat | Enterprise Linux Server Eus | 7.5 |
| Redhat | Enterprise Linux Server Eus | 7.6 |
| Redhat | Enterprise Linux Server Tus | 7.3 |
| Redhat | Enterprise Linux Server Tus | 7.6 |
| Redhat | Enterprise Linux Workstation | 7.0 |
| Opensuse | Leap | 42.1 |
| Opensuse | Opensuse | 13.1 |
References
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00052.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00007.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00044.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00055.htmlMailing List, Third Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-2574.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-2584.htmlThird Party Advisory
- http://www.debian.org/security/2016/dsa-3607Third Party Advisory
- http://www.securityfocus.com/bid/90535Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/USN-3016-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3016-2Third Party Advisory
- http://www.ubuntu.com/usn/USN-3016-3Third Party Advisory
- http://www.ubuntu.com/usn/USN-3016-4Third Party Advisory
- http://www.ubuntu.com/usn/USN-3017-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3017-2Third Party Advisory
- http://www.ubuntu.com/usn/USN-3017-3Third Party Advisory
- http://www.ubuntu.com/usn/USN-3018-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3018-2Third Party Advisory
- http://www.ubuntu.com/usn/USN-3019-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3020-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3021-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3021-2Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1335215Issue Tracking, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/46529/Exploit, Third Party Advisory, VDB Entry
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00052.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00007.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00044.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00055.htmlMailing List, Third Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-2574.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-2584.htmlThird Party Advisory
- http://www.debian.org/security/2016/dsa-3607Third Party Advisory
- http://www.securityfocus.com/bid/90535Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/USN-3016-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3016-2Third Party Advisory
- http://www.ubuntu.com/usn/USN-3016-3Third Party Advisory
- http://www.ubuntu.com/usn/USN-3016-4Third Party Advisory
- http://www.ubuntu.com/usn/USN-3017-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3017-2Third Party Advisory
- http://www.ubuntu.com/usn/USN-3017-3Third Party Advisory
- http://www.ubuntu.com/usn/USN-3018-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3018-2Third Party Advisory
- http://www.ubuntu.com/usn/USN-3019-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3020-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3021-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3021-2Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1335215Issue Tracking, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/46529/Exploit, Third Party Advisory, VDB Entry
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2016-4578?
sound/core/timer.c in the Linux kernel through 4.6 does not initialize certain r1 data structures, which allows local users to obtain sensitive information from kernel stack memory via crafted use of the ALSA timer interface, related to the (1) snd_timer_user_ccallback and (2) snd_timer_user_tinterrupt functions.
How severe is CVE-2016-4578?
Severity scoring for CVE-2016-4578 is pending analysis. The EPSS model estimates a 1.21% probability of exploitation in the next 30 days.
How do I fix CVE-2016-4578?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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