CVE-2018-20854 Memory corruption in n/a
An off-by-one error in the Linux kernel's Ocelot SerDes PHY driver allows out-of-bounds memory reads, potentially leading to information disclosure or crashes.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-20854?
CVE-2018-20854 is a high-severity memory corruption vulnerability in Linux kernel, published on 26 Jul 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An issue was discovered in the Linux kernel before 4.20. drivers/phy/mscc/phy-ocelot-serdes.c has an off-by-one error with a resultant ctrl->phys out-of-bounds read.
Weakness: CWE-125
Which versions are affected by CVE-2018-20854?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2018-20854?
No fix has been published for CVE-2018-20854 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2018-20854 being exploited?
There is no known exploitation of CVE-2018-20854 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as GHSA-364h-gppc-fj9q.