Input validation error in Linux kernel

1) Input validation error

EUVDB-ID: #VU30635

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/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-2010-2243

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

A vulnerability exists in kernel/time/clocksource.c in the Linux kernel before 2.6.34 where on non-GENERIC_TIME systems (GENERIC_TIME=n), accessing /sys/devices/system/clocksource/clocksource0/current_clocksource results in an OOPS.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 2.6.0 - 2.6.32.58

External links

http://access.redhat.com/security/cve/cve-2010-2243
http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ad6759fbf35d104dbf573cd6f4c6784ad6823f7e
http://security-tracker.debian.org/tracker/CVE-2010-2243
http://www.openwall.com/lists/oss-security/2010/06/25/1

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.