CVE-2019-19449 Memory corruption in n/a
A crafted f2fs filesystem image triggers a slab-out-of-bounds read in the Linux kernel, potentially causing crashes or information disclosure.
- 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-2019-19449?
CVE-2019-19449 is a high-severity memory corruption vulnerability in Linux kernel, published on 8 Dec 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 f2fs filesystem image can lead to slab-out-of-bounds read access in f2fs_build_segment_manager in fs/f2fs/segment.c, related to init_min_max_mtime in fs/f2fs/segment.c (because the second argument to get_seg_entry is not validated).
Weakness: CWE-125
Which versions are affected by CVE-2019-19449?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2019-19449?
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-2019-19449 being exploited?
There is no known exploitation of CVE-2019-19449 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2019-19449, GHSA-j4mc-42j4-7jgg, ROOT-OS-DEBIAN-11-CVE-2019-19449, ROOT-OS-DEBIAN-12-CVE-2019-19449, ROOT-OS-DEBIAN-13-CVE-2019-19449, UBUNTU-CVE-2019-19449.