CVE-2022-32476 describes a Time-of-Check to Time-of-Use (TOCTOU) race condition in Insyde InsydeH2O firmware kernels 5.0 through 5.5. This vulnerability, stemming from DMA attacks on a shared SMM/non-SMM buffer, could lead to SMRAM corruption and privilege escalation. With a CVSS score of 7.0 (HIGH), exploitation requires local access and high attack complexity, but can result in full confidentiality, integrity, and availability impact. While mitigations like IOMMU protection or data copying to SMRAM exist, there is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 5.0, < 5.2.05.27.27CPE matchmatch criteria | cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:* | ||
>= 5.3, < 5.3.05.36.27CPE matchmatch criteria | cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:* | ||
>= 5.4, < 5.4.05.44.27CPE matchmatch criteria | cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:* | ||
>= 5.5, < 5.5.05.52.27CPE matchmatch criteria | cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
No social media mentions found for this CVE.
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.4 InfoSec Media, 0.1 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.