Vulnerability identifier: #VU41051

Vulnerability risk: Medium

CVSSv3.1: 4.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:U/RC:C]

CVE-ID: CVE-2014-7841

CWE-ID: CWE-476

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

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. A remote attacker can trigger denial of service conditions via a malformed INIT chunk.

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

Vulnerable software versions

Linux kernel: 3.0 - 3.0.68, 3.1 - 3.1.10, 3.2, 3.10 - 3.10.29, 3.11 - 3.11.10, 3.12 - 3.12.17, 3.13 - 3.13.11, 3.14 - 3.14.5, 3.15 - 3.15.8, 3.16.0 - 3.16.1, 3.17 - 3.17.2

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External links
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e40607cbe270a9e8360907cb1e62ddf0736e4864
http://linux.oracle.com/errata/ELSA-2015-3004.html
http://linux.oracle.com/errata/ELSA-2015-3005.html
http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html
http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00020.html
http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00000.html
http://rhn.redhat.com/errata/RHSA-2015-0087.html
http://rhn.redhat.com/errata/RHSA-2015-0102.html
http://rhn.redhat.com/errata/RHSA-2015-0284.html
http://rhn.redhat.com/errata/RHSA-2015-0285.html
http://rhn.redhat.com/errata/RHSA-2015-0695.html
http://secunia.com/advisories/62305
http://secunia.com/advisories/62597
http://secunia.com/advisories/62735
http://www.debian.org/security/2014/dsa-3093
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.17.4
http://www.openwall.com/lists/oss-security/2014/11/13/6
http://www.securityfocus.com/bid/71081
http://bugzilla.redhat.com/show_bug.cgi?id=1163087
http://github.com/torvalds/linux/commit/e40607cbe270a9e8360907cb1e62ddf0736e4864
http://support.f5.com/kb/en-us/solutions/public/16000/000/sol16016.html

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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.