CVE-2016-4578

Public Exploit

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.

Category

5.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.26%
Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory debian.org Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory kernel.org Vendor Advisory kernel.org Vendor Advisory github.com Vendor Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.html third party advisory vendor advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e4ec8cc8039a7063e24204299b462bd1383184a5 vendor advisory
http://www.ubuntu.com/usn/USN-3017-1 third party advisory vendor advisory
https://www.exploit-db.com/exploits/46529/ exploit vdb entry third party advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00007.html mailing list third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-3017-3 third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00055.html mailing list third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-3018-2 third party advisory vendor advisory
https://github.com/torvalds/linux/commit/e4ec8cc8039a7063e24204299b462bd1383184a5 vendor advisory
http://www.ubuntu.com/usn/USN-3021-2 third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-3017-2 third party advisory vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1335215 issue tracking vdb entry third party advisory
http://rhn.redhat.com/errata/RHSA-2016-2584.html third party advisory vendor advisory
http://rhn.redhat.com/errata/RHSA-2016-2574.html third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-3019-1 third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.html mailing list third party advisory vendor advisory
http://www.debian.org/security/2016/dsa-3607 third party advisory vendor advisory
http://www.securityfocus.com/bid/90535 vdb entry third party advisory
http://www.ubuntu.com/usn/USN-3016-2 third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-3016-1 third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00052.html third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-3021-1 third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-3018-1 third party advisory vendor advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9a47e9cff994f37f7f0dbd9ae23740d0f64f9fe6 vendor advisory
http://www.openwall.com/lists/oss-security/2016/05/11/5 mailing list
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00044.html mailing list third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-3016-3 third party advisory vendor advisory
https://github.com/torvalds/linux/commit/9a47e9cff994f37f7f0dbd9ae23740d0f64f9fe6 vendor advisory
http://www.ubuntu.com/usn/USN-3016-4 third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-3020-1 third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2016-4578?
CVE-2016-4578 has been scored as a medium severity vulnerability.
How to fix CVE-2016-4578?
To fix CVE-2016-4578, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-4578 being actively exploited in the wild?
It is possible that CVE-2016-4578 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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