CVE-2009-1894 Race condition in n/a

High 7.2 Published 17 Jul 2009 Updated 7 Aug 2024

Local attackers can exploit a race condition in PulseAudio to gain elevated privileges via hard link manipulation.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2009-1894?

CVE-2009-1894 is a high-severity vulnerability in n/a, published on 17 Jul 2009. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Race condition in PulseAudio 0.9.9, 0.9.10, and 0.9.14 allows local users to gain privileges via vectors involving creation of a hard link, related to the application setting LD_BIND_NOW to 1, and then calling execv on the target of the /proc/self/exe symlink.

Weakness: CWE-362

Which versions are affected by CVE-2009-1894?

It affects 1 product.

Products include Pulseaudio Pulseaudio.

How do I fix CVE-2009-1894?

Apply the vendor's patch.

Is CVE-2009-1894 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-1894 exists.

Public exploit code: 2 Exploit-DB entries.

Sources

Also known as DEBIAN-CVE-2009-1894, DSA-1838-1, GHSA-8qwr-xcgg-6rcv.