CVE-2016-4578

Name: CVE-2016-4578
Creator: NVD / NIST
Published: 2016-05-23T10:59:09.05+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.21%

Last modified Jun 17, 2026

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

EPSS Probability

1.21%

64.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

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://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9a47e9cff994f37f7f0dbd9ae23740d0f64f9fe6Vendor Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e4ec8cc8039a7063e24204299b462bd1383184a5Vendor Advisory
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.openwall.com/lists/oss-security/2016/05/11/5Mailing List
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://github.com/torvalds/linux/commit/9a47e9cff994f37f7f0dbd9ae23740d0f64f9fe6Vendor Advisory
https://github.com/torvalds/linux/commit/e4ec8cc8039a7063e24204299b462bd1383184a5Vendor Advisory
https://www.exploit-db.com/exploits/46529/Exploit, Third Party Advisory, VDB Entry
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9a47e9cff994f37f7f0dbd9ae23740d0f64f9fe6Vendor Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e4ec8cc8039a7063e24204299b462bd1383184a5Vendor Advisory
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.openwall.com/lists/oss-security/2016/05/11/5Mailing List
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://github.com/torvalds/linux/commit/9a47e9cff994f37f7f0dbd9ae23740d0f64f9fe6Vendor Advisory
https://github.com/torvalds/linux/commit/e4ec8cc8039a7063e24204299b462bd1383184a5Vendor Advisory
https://www.exploit-db.com/exploits/46529/Exploit, Third Party Advisory, VDB Entry

Timeline

Published: May 23, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-4578?

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.

Are you affected by CVE-2016-4578?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST