CVE-2016-2547

low-risk

Published 2016-04-27

sound/core/timer.c in the Linux kernel before 4.4.1 employs a locking approach that does not consider slave timer instances, which allows local users to cause a denial of service (race condition, use-after-free, and system crash) via a crafted ioctl call.

Do I need to act?

0.07% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 5.1/10 Medium

LOCAL / HIGH complexity

Affected Products (1)

Linux Kernel

Affected Vendors

Linux

References (40)

Patch http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b5a663...

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html

http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html

http://www.debian.org/security/2016/dsa-3503

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.1

Patch http://www.openwall.com/lists/oss-security/2016/01/19/1

http://www.securityfocus.com/bid/83378

http://www.securitytracker.com/id/1035298

http://www.ubuntu.com/usn/USN-2929-1

http://www.ubuntu.com/usn/USN-2929-2

http://www.ubuntu.com/usn/USN-2930-1

http://www.ubuntu.com/usn/USN-2930-2

http://www.ubuntu.com/usn/USN-2930-3

http://www.ubuntu.com/usn/USN-2931-1

http://www.ubuntu.com/usn/USN-2932-1

http://www.ubuntu.com/usn/USN-2967-1

http://www.ubuntu.com/usn/USN-2967-2

https://bugzilla.redhat.com/show_bug.cgi?id=1311566

Patch https://github.com/torvalds/linux/commit/b5a663aa426f4884c71cd8580adae73f33570f0...

and 20 more references

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low-risk

Severity 13/34 · Low

Exploitability 0/34 · Minimal

Exposure 5/34 · Minimal