CVE-2019-19378 Memory corruption in n/a
A local attacker can trigger a slab-out-of-bounds write in the Linux kernel by mounting a crafted btrfs filesystem image, potentially leading to code execution or privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2019-19378?
CVE-2019-19378 is a high-severity memory corruption vulnerability in Linux kernel, published on 29 Nov 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image can lead to slab-out-of-bounds write access in index_rbio_pages in fs/btrfs/raid56.c.
Weakness: CWE-787
Which versions are affected by CVE-2019-19378?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2019-19378?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2019-19378 being exploited?
There is no known exploitation of CVE-2019-19378 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2019-19378, GHSA-9pm5-94qv-mm9q, ROOT-OS-DEBIAN-12-CVE-2019-19378, ROOT-OS-DEBIAN-13-CVE-2019-19378, ROOT-OS-UBUNTU-2204-CVE-2019-19378, ROOT-OS-UBUNTU-2404-CVE-2019-19378 and 1 more.