NULL pointer dereference in Linux kernel

1) NULL pointer dereference

EUVDB-ID: #VU41277

Risk: Medium

CVSSv3.1: 6.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2014-3535

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in the Linux kernel before 2.6.36 incorrectly uses macros for netdev_printk and its related logging implementation, which allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) by sending invalid packets to a VxLAN interface. A remote attacker can perform a denial of service (DoS) attack.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Linux kernel: 2.6.35 - 2.6.35.12

External links

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=256df2f3879efdb2e9808bdb1b54b16fbb11fa38
http://mirror.linux.org.au/linux/kernel/v2.6/ChangeLog-2.6.36
http://www.securityfocus.com/bid/69721
http://bugzilla.redhat.com/show_bug.cgi?id=1114540
http://github.com/torvalds/linux/commit/256df2f3879efdb2e9808bdb1b54b16fbb11fa38

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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