GSD-2021-1001727 RDMA/cma: Fix listener leak in rdma_cma_listen_on_all() failure
A listener leak in the Linux Kernel RDMA subsystem can lead to resource exhaustion and 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-2021-1001727?
GSD-2021-1001727 is a denial of service 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
RDMA/cma: Fix listener leak in rdma_cma_listen_on_all() failure
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 v5.14.10 by commit e56a5146ef8cb51cd7c9e748267dce7564448a35, it was introduced in version v5.11 by commit c80a0c52d85c49a910d0dc0e342e8d8898677dc0. For more details please see the references link.
Which versions are affected by GSD-2021-1001727?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001727?
No fix has been published for GSD-2021-1001727 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-2021-1001727 being exploited?
There is no known exploitation of GSD-2021-1001727 in the wild and no public exploit code.