Improper input validation in Linux kernel ocfs2

1) Improper input validation

EUVDB-ID: #VU92548

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2011-0463

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to improper input validation error within the ocfs2_prepare_page_for_write() function in fs/ocfs2/aops.c. A local user can gain access to sensitive information.

Mitigation

Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

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

External links

https://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=272b62c1f0f6f742046e45b50b6fec98860208a0
https://oss.oracle.com/pipermail/ocfs2-devel/2011-February/007846.html
https://secunia.com/advisories/43966
https://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.39-rc1
https://www.ubuntu.com/usn/USN-1146-1
https://bugzilla.novell.com/show_bug.cgi?id=673037

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.