CVE-2022-49858 octeontx2-pf: Fix SQE threshold checking
A race condition in the OcteonTX2 driver can cause memory leaks and potential denial of service by losing SKB pointers during packet transmission.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-49858?
CVE-2022-49858 is a high-severity memory corruption vulnerability in Linux kernel, published on 1 May 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
octeontx2-pf: Fix SQE threshold checking
Current way of checking available SQE count which is based on HW updated SQB count could result in driver submitting an SQE even before CQE for the previously transmitted SQE at the same index is processed in NAPI resulting losing SKB pointers, hence a leak. Fix this by checking a consumer index which is updated once CQE is processed.
Which versions are affected by CVE-2022-49858?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-49858?
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-2022-49858 being exploited?
There is no known exploitation of CVE-2022-49858 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-49858, GHSA-6chx-4cx4-vrw4, ROOT-OS-DEBIAN-11-CVE-2022-49858, ROOT-OS-UBUNTU-2204-CVE-2022-49858, UBUNTU-CVE-2022-49858.