NULL pointer dereference in Linux kernel

1) NULL pointer dereference

EUVDB-ID: #VU44357

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2011-2203

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 in the Linux kernel 2.6 allows local users to cause a denial of service (NULL pointer dereference and Oops) by mounting an HFS file system with a malformed MDB extent record. A remote attacker can perform a denial of service (DoS) attack.

Mitigation

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

Vulnerable software versions

Linux kernel: 2.6

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:2.6:*:*:*:*:*:*:*

External links

https://secunia.com/advisories/47754
https://www.openwall.com/lists/oss-security/2011/06/13/16
https://www.securityfocus.com/bid/48236
https://www.ubuntu.com/usn/USN-1324-1
https://www.ubuntu.com/usn/USN-1328-1
https://www.ubuntu.com/usn/USN-1344-1
https://bugzilla.redhat.com/show_bug.cgi?id=712774
https://lkml.org/lkml/2011/6/8/154

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.