CVE-2019-19927 Memory corruption in n/a

Medium 6.0 Published Updated

A local attacker can trigger a slab-out-of-bounds read in the Linux kernel by mounting a crafted f2fs filesystem image, potentially leading to information disclosure or system crash.

Exploited in the wild
Not known
Login needed
An administrator
Attackable
Local or same network only
Victim action needed
Not needed
Fix
Available

What is CVE-2019-19927?

CVE-2019-19927 is a medium-severity memory corruption vulnerability in Linux kernel, published on 31 Dec 2019. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel 5.0.0-rc7 (as distributed in ubuntu/linux.git on kernel.ubuntu.com), mounting a crafted f2fs filesystem image and performing some operations can lead to slab-out-of-bounds read access in ttm_put_pages in drivers/gpu/drm/ttm/ttm_page_alloc.c. This is related to the vmwgfx or ttm module.

Weakness: CWE-125

Which versions are affected by CVE-2019-19927?

It affects 2 products.

Products include Linux kernel, Opensuse Leap.

How do I fix CVE-2019-19927?

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-2019-19927 being exploited?

There is no known exploitation of CVE-2019-19927 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as DEBIAN-CVE-2019-19927, GHSA-wwjm-g2hc-3mhm, UBUNTU-CVE-2019-19927.

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