NULL pointer dereference in Linux kernel

1) NULL pointer dereference

EUVDB-ID: #VU44346

Risk: Medium

CVSSv3.1: 6.8 [AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2011-2525

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 call.

Mitigation

Update to version 2.6.35.

Vulnerable software versions

Linux kernel: 2.6.0 - 2.6.34.10

External links

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=53b0f08042f04813cd1a7473dacd3edfacb28eb3
http://kerneltrap.org/mailarchive/linux-netdev/2010/5/21/6277805
http://mirror.anl.gov/pub/linux/kernel/v2.6/ChangeLog-2.6.35
http://openwall.com/lists/oss-security/2011/07/12/1
http://rhn.redhat.com/errata/RHSA-2011-1065.html
http://rhn.redhat.com/errata/RHSA-2011-1163.html
http://bugzilla.redhat.com/show_bug.cgi?id=720552

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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