CVE-2021-47149 net: fujitsu: fix potential null-ptr-deref
A null pointer dereference in the Fujitsu network driver can cause a system crash if ioremap fails, requiring a kernel patch.
- 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-2021-47149?
CVE-2021-47149 is a medium-severity vulnerability in Linux kernel, published on 25 Mar 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
net: fujitsu: fix potential null-ptr-deref
In fmvj18x_get_hwinfo(), if ioremap fails there will be NULL pointer deref. To fix this, check the return value of ioremap and return -1 to the caller in case of failure.
Weakness: CWE-476
Which versions are affected by CVE-2021-47149?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2021-47149?
Apply the vendor's patch.
Is CVE-2021-47149 being exploited?
There is no known exploitation of CVE-2021-47149 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2021-47149, GHSA-mx9m-w3w5-w7q4, UBUNTU-CVE-2021-47149.