CVE-2009-2848 Privilege escalation in n/a
Local attackers can exploit improper handling of thread IDs in the Linux kernel to cause memory corruption, leading to denial of service or privilege escalation.
- 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-2009-2848?
CVE-2009-2848 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 18 Aug 2009. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The execve function in the Linux kernel, possibly 2.6.30-rc6 and earlier, does not properly clear the current->clear_child_tid pointer, which allows local users to cause a denial of service (memory corruption) or possibly gain privileges via a clone system call with CLONE_CHILD_SETTID or CLONE_CHILD_CLEARTID enabled, which is not properly handled during thread creation and exit.
Weakness: CWE-269
Which versions are affected by CVE-2009-2848?
It affects 12 products.
Products include Canonical Ubuntu Linux, Fedoraproject Fedora, Linux kernel, Novell Linux Desktop, Opensuse Opensuse, Redhat Enterprise Linux Desktop and 6 more.
How do I fix CVE-2009-2848?
Apply the vendor's patch.
Is CVE-2009-2848 being exploited?
There is no known exploitation of CVE-2009-2848 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as GHSA-2589-6chq-5gj4.