GSD-2023-1001578 nfsd: under NFSv4.1, fix double svc_xprt_put on rpc_create failure
A double free vulnerability in the Linux Kernel NFS server can cause a denial of service when RPC creation fails under NFSv4.1.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2023-1001578?
GSD-2023-1001578 is an use after free vulnerability in Kernel, published on 17 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
nfsd: under NFSv4.1, fix double svc_xprt_put on rpc_create 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 v4.9.337 by commit 707bcca9616002d204091ca7c4d1d91151104332, it was introduced in version v4.9.229 by commit 69151594c72a1748cf93ae5b5fa68d5084253dce. For more details please see the references link.
Which versions are affected by GSD-2023-1001578?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1001578?
No fix has been published for GSD-2023-1001578 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is GSD-2023-1001578 being exploited?
There is no known exploitation of GSD-2023-1001578 in the wild and no public exploit code.