CVE-2022-33986 Race condition in n/a
Attackers can exploit a TOCTOU race condition in the VariableRuntimeDxe SMI handler via DMA to corrupt SMRAM and escalate privileges.
- 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-2022-33986?
CVE-2022-33986 is a medium-severity vulnerability in n/a, published on 14 Nov 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
DMA attacks on the parameter buffer used by the VariableRuntimeDxe software SMI handler could lead to a TOCTOU attack. DMA attacks on the parameter buffer used by the software SMI handler used by the driver VariableRuntimeDxe could lead to a TOCTOU attack on the SMI handler and lead to corruption of SMRAM. This issue was discovered by Insyde engineering during a security review. This issue is fixed in Kernel 5.4: 05.44.23 and Kernel 5.5: 05.52.23. CWE-367 CWE-367 Report at: https://www.insyde.com/security-pledge/SA-2022056
Weakness: CWE-367
Which versions are affected by CVE-2022-33986?
It affects 1 product.
Products include Insyde Kernel.
How do I fix CVE-2022-33986?
No fix has been published for CVE-2022-33986 yet. Limit exposure of the affected software until one is available.
Is CVE-2022-33986 being exploited?
There is no known exploitation of CVE-2022-33986 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-qhqh-xp2p-xp7w.