CVE-2009-0029 Privilege escalation in n/a

High 7.2 Published 15 Jan 2009 Updated 7 Aug 2024

Local attackers can exploit improper sign extension in 64-bit kernel registers to crash the system or escalate privileges on specific architectures.

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-2009-0029?

CVE-2009-0029 is a high-severity vulnerability in Debian Debian Linux, published on 15 Jan 2009. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The ABI in the Linux kernel 2.6.28 and earlier on s390, powerpc, sparc64, and mips 64-bit platforms requires that a 32-bit argument in a 64-bit register was properly sign extended when sent from a user-mode application, but cannot verify this, which allows local users to cause a denial of service (crash) or possibly gain privileges via a crafted system call.

Weakness: CWE-20

Which versions are affected by CVE-2009-0029?

It affects 2 products.

Products include Debian Debian Linux, Linux kernel.

How do I fix CVE-2009-0029?

Apply the vendor's patch.

Is CVE-2009-0029 being exploited?

There is no known exploitation of CVE-2009-0029 in the wild and no public exploit code.

All Debian Debian Linux vulnerabilities

Sources

Also known as GHSA-4cr9-h3gm-wcrx.