CVE-2019-19049 Denial of service in n/a
Attackers can cause denial of service via memory leak in Linux kernel unittest code, though exploitation is disputed as it requires boot-time access.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-19049?
CVE-2019-19049 is a high-severity denial of service vulnerability in Linux kernel, published on 18 Nov 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A memory leak in the unittest_data_add() function in drivers/of/unittest.c in the Linux kernel before 5.3.10 allows attackers to cause a denial of service (memory consumption) by triggering of_fdt_unflatten_tree() failures, aka CID-e13de8fe0d6a. NOTE: third parties dispute the relevance of this because unittest.c can only be reached during boot
Weakness: CWE-401
Which versions are affected by CVE-2019-19049?
It affects 2 products.
Products include Linux kernel, Opensuse Leap.
How do I fix CVE-2019-19049?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2019-19049 being exploited?
There is no known exploitation of CVE-2019-19049 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2019-19049, GHSA-37hw-m3rc-6ww4, UBUNTU-CVE-2019-19049.