Vulnerability identifier: #VU43980

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2012-1583

CWE-ID: CWE-399

Exploitation vector: Network

Exploit availability: No

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

Vendor: Linux Foundation

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

Double free vulnerability in the xfrm6_tunnel_rcv function in net/ipv6/xfrm6_tunnel.c in the Linux kernel before 2.6.22, when the xfrm6_tunnel module is enabled, allows remote attackers to cause a denial of service (panic) via crafted IPv6 packets.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 2.6.0 - 2.6.21.6

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External links
http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.22
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d0772b70faaf8e9f2013b6c4273d94d5eac8047a
http://marc.info/?l=bugtraq&m=133951357207000&w=2
http://rhn.redhat.com/errata/RHSA-2012-0488.html
http://secunia.com/advisories/48881
http://www.securityfocus.com/bid/53139
http://www.securitytracker.com/id?1026930
http://bugzilla.redhat.com/show_bug.cgi?id=752304
http://github.com/torvalds/linux/commit/d0772b70faaf8e9f2013b6c4273d94d5eac8047a

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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.