NULL pointer dereference in Linux kernel input tablet driver

1) NULL pointer dereference

EUVDB-ID: #VU90681

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-2187

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a local non-authenticated attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to NULL pointer dereference within the gtco_probe() function in drivers/input/tablet/gtco.c. A local non-authenticated attacker can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 4.5 - 4.5.2

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:4.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.5:rc1:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.5:rc2:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.5:rc3:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.5:rc4:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.5:rc5:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.5:rc6:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.5:rc7:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.5.0:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.5.1:*:*:*:*:*:*:*

External links

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=162f98dea487206d9ab79fc12ed64700667a894d
https://github.com/torvalds/linux/commit/162f98dea487206d9ab79fc12ed64700667a894d
https://bugzilla.redhat.com/show_bug.cgi?id=1317017
https://www.ubuntu.com/usn/USN-2997-1
https://www.ubuntu.com/usn/USN-2996-1
https://www.ubuntu.com/usn/USN-3000-1
https://www.ubuntu.com/usn/USN-2998-1
https://www.ubuntu.com/usn/USN-3002-1
https://www.ubuntu.com/usn/USN-3003-1
https://www.ubuntu.com/usn/USN-3001-1
https://www.ubuntu.com/usn/USN-3004-1
https://www.ubuntu.com/usn/USN-2989-1
https://www.ubuntu.com/usn/USN-3005-1
https://www.ubuntu.com/usn/USN-3007-1
https://lists.opensuse.org/opensuse-security-announce/2016-06/msg00052.html
https://www.ubuntu.com/usn/USN-3006-1
https://www.debian.org/security/2016/dsa-3607
https://www.securityfocus.com/bid/85425
https://lists.opensuse.org/opensuse-security-announce/2016-08/msg00007.html

Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.