NULL pointer dereference in Linux kernel cifs

1) NULL pointer dereference

EUVDB-ID: #VU90733

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2014-7145

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The vulnerability exists due to NULL pointer dereference within the fs/cifs/smb2pdu.c. A remote non-authenticated attacker can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 3.16 - 3.16.2

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:3.16:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.16.0:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.16.0-28:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.16.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.16.2:*:*:*:*:*:*:*

External links

https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.16.3
https://www.openwall.com/lists/oss-security/2014/09/22/4
https://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=18f39e7be0121317550d03e267e3ebd4dbfbb3ce
https://github.com/torvalds/linux/commit/18f39e7be0121317550d03e267e3ebd4dbfbb3ce
https://www.securityfocus.com/bid/69867
https://www.ubuntu.com/usn/USN-2394-1
https://rhn.redhat.com/errata/RHSA-2015-0102.html

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.