CVE-2022-49356 SUNRPC: Trap RDMA segment overflows
A memory corruption vulnerability in the Linux kernel's SUNRPC RDMA implementation allows attackers to cause denial of service or potentially execute code.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-49356?
CVE-2022-49356 is a critical memory corruption vulnerability in Linux kernel, published on 26 Feb 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
SUNRPC: Trap RDMA segment overflows
Prevent svc_rdma_build_writes() from walking off the end of a Write chunk's segment array. Caught with KASAN.
The test that this fix replaces is invalid, and might have been left over from an earlier prototype of the PCL work.
Which versions are affected by CVE-2022-49356?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-49356?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2022-49356 being exploited?
There is no known exploitation of CVE-2022-49356 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-49356, GHSA-7v7j-q759-fprg, UBUNTU-CVE-2022-49356.