GSD-2021-1000343 net:emac/emac-mac: Fix a use after free in emac_mac_tx_buf_send
A use-after-free vulnerability in the Linux kernel EMAC MAC driver allows attackers to potentially execute code or cause a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1000343?
GSD-2021-1000343 is an use after free vulnerability in Kernel, published on 31 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
net:emac/emac-mac: Fix a use after free in emac_mac_tx_buf_send
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 v5.10.37 by commit 9dc373f74097edd0e35f3393d6248eda8d1ba99d, it was introduced in version v4.9 by commit b9b17debc69d27cd55e21ee51a5ba7fc50a426cf. For more details please see the references link.
Which versions are affected by GSD-2021-1000343?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000343?
No fix has been published for GSD-2021-1000343 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is GSD-2021-1000343 being exploited?
There is no known exploitation of GSD-2021-1000343 in the wild and no public exploit code.