CVE-2022-35895 Memory corruption in n/a
Attackers can exploit improper input validation in the FwBlockServiceSmm driver to corrupt memory and execute arbitrary code in SMRAM.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-35895?
CVE-2022-35895 is a high-severity memory corruption vulnerability in Insyde Insydeh2o, published on 21 Sep 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. The FwBlockSericceSmm driver does not properly validate input parameters for a software SMI routine, leading to memory corruption of arbitrary addresses including SMRAM, and possible arbitrary code execution.
Weakness: CWE-787
Which versions are affected by CVE-2022-35895?
It affects 1 product.
Products include Insyde Insydeh2o.
How do I fix CVE-2022-35895?
No fix has been published for CVE-2022-35895 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2022-35895 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-35895 exists.
Other vulnerabilities in Insyde Insydeh2o
Sources
Also known as GHSA-mm42-46m4-7pp9.