NULL pointer dereference in Linux kernel usb class driver

1) NULL pointer dereference

EUVDB-ID: #VU90677

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-2016-3138

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 acm_probe() function in drivers/usb/class/cdc-acm.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 - 4.5.0

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:*:*:*:*:*:*:*

External links

https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.1
https://www.openwall.com/lists/oss-security/2016/03/14/4
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8835ba4a39cf53f705417b3b3a94eb067673f2c9
https://github.com/torvalds/linux/commit/8835ba4a39cf53f705417b3b3a94eb067673f2c9
https://bugzilla.redhat.com/show_bug.cgi?id=1316204
https://www.ubuntu.com/usn/USN-2997-1
https://www.ubuntu.com/usn/USN-2996-1
https://lists.opensuse.org/opensuse-security-announce/2016-06/msg00052.html
https://lists.opensuse.org/opensuse-security-announce/2016-06/msg00056.html
https://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.html
https://lists.opensuse.org/opensuse-security-announce/2016-06/msg00059.html
https://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html
https://www.debian.org/security/2016/dsa-3607
https://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html
https://lists.opensuse.org/opensuse-security-announce/2016-05/msg00060.html
https://www.ubuntu.com/usn/USN-2968-1
https://www.ubuntu.com/usn/USN-2969-1
https://www.ubuntu.com/usn/USN-2971-1
https://www.ubuntu.com/usn/USN-2971-2
https://www.ubuntu.com/usn/USN-2970-1
https://www.ubuntu.com/usn/USN-2971-3
https://www.ubuntu.com/usn/USN-2968-2

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.