CVE Vulnerabilities

CVE-2022-30774

Time-of-check Time-of-use (TOCTOU) Race Condition

Published: Nov 15, 2022 | Modified: Feb 14, 2023
CVSS 3.x
6.4
MEDIUM
Source:
NVD
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu

DMA attacks on the parameter buffer used by the PnpSmm driver could change the contents after parameter values have been checked but before they are used (a TOCTOU attack) DMA attacks on the parameter buffer used by the PnpSmm driver could change the contents after parameter values have been checked but before they are used (a TOCTOU attack) . This issue was discovered by Insyde engineering during a security review. This iss was fixed in Kernel 5.2: 05.27.29, Kernel 5.3: 05.36.25, Kernel 5.4: 05.44.25, Kernel 5.5: 05.52.25. CWE-367 https://www.insyde.com/security-pledge/SA-2022043

Weakness

The product checks the state of a resource before using that resource, but the resource’s state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state.

Affected Software

Name Vendor Start Version End Version
Kernel Insyde 5.2 (including) 5.2.05.27.29 (excluding)
Kernel Insyde 5.3 (including) 5.3.05.36.25 (excluding)
Kernel Insyde 5.4 (including) 5.4.05.44.25 (excluding)
Kernel Insyde 5.5 (including) 5.5.05.52.25 (excluding)

Potential Mitigations

References