GSD-2021-1000499 RDMA/rxe: Return CQE error if invalid lkey was supplied
The Linux Kernel RDMA/rxe driver fails to validate local keys, allowing attackers to access or modify memory without proper authorization.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1000499?
GSD-2021-1000499 is a missing authorization vulnerability in Kernel, published on 31 May 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
RDMA/rxe: Return CQE error if invalid lkey was supplied
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 v5.12.7 by commit abe31d25facdb9109fe2cf69890748295291570c, it was introduced in version v4.8 by commit 8700e3e7c4857d28ebaa824509934556da0b3e76. For more details please see the references link.
Which versions are affected by GSD-2021-1000499?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000499?
No fix has been published for GSD-2021-1000499 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is GSD-2021-1000499 being exploited?
There is no known exploitation of GSD-2021-1000499 in the wild and no public exploit code.