CVE-2016-2543 Information

Description

The snd_seq_ioctl_remove_events function in sound/core/seq/seq_clientmgr.c in the Linux kernel before 4.4.1 does not verify FIFO assignment before proceeding with FIFO clearing which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via a crafted ioctl call.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=030e2c78d3a91dd0d27fef37e91950dde333eba1 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 http://www.openwall.com/lists/oss-security/2016/01/19/1 http://www.securityfocus.com/bid/83377 http://www.securitytracker.com/id/1035304 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=1311554 https://github.com/torvalds/linux/commit/030e2c78d3a91dd0d27fef37e91950dde333eba1

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.2