GSD-2021-1001266 NFSv4: Fix an Oops in pnfs_mark_request_commit() when doing O_DIRECT
A null pointer dereference in the Linux Kernel NFSv4 module can cause a system crash when using O_DIRECT, leading to 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-2021-1001266?
GSD-2021-1001266 is a vulnerability in Kernel, published on 3 Aug 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
NFSv4: Fix an Oops in pnfs_mark_request_commit() when doing O_DIRECT
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 v5.10.52 by commit 5c7ef8a3705542136a1e19b070e951f0730b2153, it was introduced in version v5.7 by commit 9c455a8c1e146dac3a6d1405fe6a7096177b9546. For more details please see the references link.
Which versions are affected by GSD-2021-1001266?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001266?
No fix has been published for GSD-2021-1001266 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1001266 being exploited?
There is no known exploitation of GSD-2021-1001266 in the wild and no public exploit code.