GSD-2021-1001581 net_sched: fix NULL deref in fifo_set_limit()
A NULL pointer dereference in the Linux kernel's net_sched component allows local attackers to cause a 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
- None listed
What is GSD-2021-1001581?
GSD-2021-1001581 is a vulnerability in Kernel, published on 19 Oct 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
net_sched: fix NULL deref in fifo_set_limit()
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 v5.4.153 by commit c951a3be5e8803e93bb49a0aca0d30457d3c1b67, it was introduced in version v2.6.27 by commit fb0305ce1b03f6ff17f84f2c63daccecb45f2805. For more details please see the references link.
Which versions are affected by GSD-2021-1001581?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001581?
No fix has been published for GSD-2021-1001581 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1001581 being exploited?
There is no known exploitation of GSD-2021-1001581 in the wild and no public exploit code.