CVE-2020-9383 Memory corruption in n/a
An out-of-bounds read in the Linux kernel floppy driver allows attackers to cause a denial of service or disclose sensitive memory information.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-9383?
CVE-2020-9383 is a high-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 25 Feb 2020. 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 3.16 through 5.5.6. set_fdc in drivers/block/floppy.c leads to a wait_til_ready out-of-bounds read because the FDC index is not checked for errors before assigning it, aka CID-2e90ca68b0d2.
Weakness: CWE-125
Which versions are affected by CVE-2020-9383?
It affects 12 products.
Products include Canonical Ubuntu Linux, Debian Debian Linux, Linux kernel, Netapp Active Iq Unified Manager, Netapp Cloud Backup, Netapp Data Availability Services and 6 more.
How do I fix CVE-2020-9383?
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-2020-9383 being exploited?
There is no known exploitation of CVE-2020-9383 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2020-9383, GHSA-cg92-xv4w-rrj3, UBUNTU-CVE-2020-9383.