NULL pointer dereference in Linux kernel

1) NULL pointer dereference

EUVDB-ID: #VU42784

Risk: Medium

CVSSv3.1: 6.5 [AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2011-2482

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. A remote attacker can trigger denial of service conditions via a crafted SCTP packet.

Mitigation

Update to version 2.6.21.

Vulnerable software versions

Linux kernel: 2.6.0 - 2.6.20.21

External links

http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.21
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=ea2bc483ff5caada7c4aa0d5fbf87d3a6590273d
http://rhn.redhat.com/errata/RHSA-2011-1212.html
http://www.openwall.com/lists/oss-security/2011/08/30/1
http://bugzilla.redhat.com/show_bug.cgi?id=714867
http://github.com/torvalds/linux/commit/ea2bc483ff5caada7c4aa0d5fbf87d3a6590273d

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.