Vulnerability in Insyde Kernel
CVE-2022-33982
DMA attacks on the parameter buffer used by the Int15ServiceSmm software SMI handler could lead to a TOCTOU attack on the SMI handler and lead to corruption of SMRAM. DMA attacks on the parameter buffer used by the software SMI handler used by the driver Int15ServiceSmm 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 5.2: 05.27.23, Kernel 5.3: 05.36.23, Kernel 5.4: 05.44.23 and Kernel 5.5: 05.52.23 CWE-367
Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)
EPSS: 0.002 (4.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Insyde Kernel
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Vendor Advisory)
- cve@mitre.org (Vendor Advisory)
- cve@mitre.org
Frequently asked questions
- What is CVE-2022-33982?
- CVE-2022-33982 is a medium-severity vulnerability in Insyde Kernel, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 6.4/10. Published 2022-11-14.
- How severe is CVE-2022-33982?
- Medium severity. CVSS v3 base score is 6.4 out of 10.