Resource exhaustion in Linux kernel

1) Resource exhaustion

EUVDB-ID: #VU30366

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2012-0810

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The int3 handler in the Linux kernel before 3.3 relies on a per-CPU debug stack, which allows local users to cause a denial of service (stack corruption and panic) via a crafted application that triggers certain lock contention.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 3.0 - 3.2.93

External links

http://bugzilla.redhat.com/show_bug.cgi?id=794557
http://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git/commit/?id=bcf6b1d78c0bde228929c388978ed3af9a623463
http://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git/commit/?id=e5d4e1c3ccee18c68f23d62ba77bda26e893d4f0

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.