CVE-2021-47158 net: dsa: sja1105: add error handling in sja1105_setup()
A memory leak in the sja1105 DSA driver setup function can lead to resource exhaustion and denial of service.
- 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-2021-47158?
CVE-2021-47158 is a high-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: dsa: sja1105: add error handling in sja1105_setup()
If any of sja1105_static_config_load(), sja1105_clocking_setup() or sja1105_devlink_setup() fails, we can't just return in the middle of sja1105_setup() or memory will leak. Add a cleanup path.
Weakness: CWE-401
Which versions are affected by CVE-2021-47158?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2021-47158?
Apply the vendor's patch.
Is CVE-2021-47158 being exploited?
There is no known exploitation of CVE-2021-47158 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2021-47158, GHSA-9r7q-crgf-5r23, UBUNTU-CVE-2021-47158.