GSD-2022-1004221 net: tun: avoid disabling NAPI twice
A bug in the Linux kernel's tun driver could cause a double NAPI disable, potentially leading to a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not stated
- Attackable
- Not stated
- Victim action needed
- Not stated
- Fix
- None listed
What is GSD-2022-1004221?
GSD-2022-1004221 is a denial of service vulnerability in Kernel, published on 31 Jul 2022.
Official description
net: tun: avoid disabling NAPI twice
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 v5.18.10 by commit b74a3789768c039182a45903b9f584b090d25117, it was introduced in version v5.18.10 by commit 872c6c9eee952a0fdb33de440c358155ef87b854. For more details please see the references link.
Which versions are affected by GSD-2022-1004221?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1004221?
No fix has been published for GSD-2022-1004221 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is GSD-2022-1004221 being exploited?
There is no known exploitation of GSD-2022-1004221 in the wild and no public exploit code.