#VU44068 Input validation error in Linux kernel - CVE-2012-1090

Vulnerability identifier: #VU44068

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2012-1090

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

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

Vendor: Linux Foundation

Description

The vulnerability allows a local authenticated user to perform a denial of service (DoS) attack.

The cifs_lookup function in fs/cifs/dir.c in the Linux kernel before 3.2.10 allows local users to cause a denial of service (OOPS) via attempted access to a special file, as demonstrated by a FIFO.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 3.2.1 - 3.2.9

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External links
https://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html
https://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html
https://rhn.redhat.com/errata/RHSA-2012-0481.html
https://rhn.redhat.com/errata/RHSA-2012-0531.html
https://secunia.com/advisories/48842
https://secunia.com/advisories/48964
https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.10
https://www.openwall.com/lists/oss-security/2012/02/28/4
https://bugzilla.redhat.com/show_bug.cgi?id=798293
https://github.com/torvalds/linux/commit/88d7d4e4a439f32acc56a6d860e415ee71d3df08

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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.