Overview
- 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
- Source
- cve@mitre.org
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 6.4
- Impact score
- 5.9
- Exploitability score
- 0.5
- Vector string
- CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
- Severity
- MEDIUM
Weaknesses
- nvd@nist.gov
- CWE-367
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:insyde:kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A5CC2DFA-DE56-4615-8F35-84F3ACD3B541",
"versionEndExcluding": "5.4.05.44.23",
"versionStartIncluding": "5.4"
},
{
"criteria": "cpe:2.3:a:insyde:kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "9786B2BB-8754-4BA4-868E-FA2468D13AD2",
"versionEndExcluding": "5.5.05.52.23",
"versionStartIncluding": "5.5"
}
],
"operator": "OR"
}
]
}
]