GSD-2021-1002543 ethtool: ioctl: fix potential NULL deref in ethtool_set_coalesce()
A local attacker can trigger a NULL pointer dereference in the Linux kernel ethtool ioctl handler, causing a system crash.
- 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 GSD-2021-1002543?
GSD-2021-1002543 is a vulnerability in Kernel, published on 19 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
ethtool: ioctl: fix potential NULL deref in ethtool_set_coalesce()
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.15.6 by commit abfdd9e2f0f9699015d72317f74154d3e53664e6, it was introduced in version v5.15 by commit f3ccfda1931977b80267ba54070a1aeafa18f6ca. For more details please see the references link.
Which versions are affected by GSD-2021-1002543?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002543?
No fix has been published for GSD-2021-1002543 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1002543 being exploited?
There is no known exploitation of GSD-2021-1002543 in the wild and no public exploit code.