Medium (6.4) in insyde kernel. EPSS 0.2% chance of exploitation in the next 30 days.
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
Severity
CVSS 3.1
6.4 medium
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS
0.2% chance of exploitation in the next 30 days; higher than 4% of CVEs (scores of 2026-10-31)