CVE-2016-2543

medium
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

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.

References

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

Details

Source: MITRE

Published: 2016-04-27

Updated: 2017-09-07

Risk Information

CVSS v2

Base Score: 4.9

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C

Impact Score: 6.9

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3

Base Score: 6.2

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

Impact Score: 3.6

Exploitability Score: 2.5

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to 4.4 (inclusive)

Tenable Plugins

View all (17 total)

IDNameProductFamilySeverity
125101EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1513)NessusHuawei Local Security Checks
critical
124815EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1491)NessusHuawei Local Security Checks
critical
111022OracleVM 3.3 : Unbreakable / etc (OVMSA-2018-0237)NessusOracleVM Local Security Checks
high
110998Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2018-4164)NessusOracle Linux Local Security Checks
high
110585Oracle Linux 6 : Unbreakable Enterprise kernel (ELSA-2018-4145)NessusOracle Linux Local Security Checks
medium
110583Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2018-4134)NessusOracle Linux Local Security Checks
high
110581OracleVM 3.3 : Unbreakable / etc (OVMSA-2018-0231)NessusOracleVM Local Security Checks
high
93289SUSE SLES11 Security Update : kernel (SUSE-SU-2016:2074-1)NessusSuSE Local Security Checks
critical
93104openSUSE Security Update : the Linux Kernel (openSUSE-2016-1015)NessusSuSE Local Security Checks
critical
91087Ubuntu 12.04 LTS : linux vulnerabilities (USN-2967-1)NessusUbuntu Local Security Checks
critical
90884SUSE SLES11 Security Update : kernel (SUSE-SU-2016:1203-1)NessusSuSE Local Security Checks
critical
90264SUSE SLED11 / SLES11 Security Update : kernel (SUSE-SU-2016:0911-1)NessusSuSE Local Security Checks
critical
89937Ubuntu 14.04 LTS : linux-lts-vivid vulnerabilities (USN-2932-1)NessusUbuntu Local Security Checks
high
89936Ubuntu 14.04 LTS : linux-lts-utopic vulnerabilities (USN-2931-1)NessusUbuntu Local Security Checks
high
89933Ubuntu 12.04 LTS : linux-lts-trusty vulnerabilities (USN-2929-2)NessusUbuntu Local Security Checks
high
89932Ubuntu 14.04 LTS : linux vulnerabilities (USN-2929-1)NessusUbuntu Local Security Checks
high
89122Debian DSA-3503-1 : linux - security updateNessusDebian Local Security Checks
critical