Overview
- Description
- DMA transactions which are targeted at input buffers used for the FwBlockServiceSmm software SMI handler could cause SMRAM corruption through a TOCTOU attack. DMA transactions which are targeted at input buffers used for the software SMI handler used by the FwBlockServiceSmm driver could cause SMRAM corruption through a TOCTOU attack. This issue was discovered by Insyde engineering based on the general description provided by Intel's iSTARE group. Fixed in kernel 5.2: 05.27.23, 5.3: 05.36.23, 5.4: 05.44.23, 5.5: 05.52.23 https://www.insyde.com/security-pledge/SA-2022048
- Source
- cve@mitre.org
- NVD status
- Modified
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": "94BB75BA-F075-45A2-AD76-BA8DCA2F4CEF",
"versionEndExcluding": "5.2.05.27.23",
"versionStartIncluding": "5.2"
},
{
"criteria": "cpe:2.3:a:insyde:kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B164BDEE-BE93-4EB5-89E7-AB2D63512CA6",
"versionEndExcluding": "5.3.05.36.23",
"versionStartIncluding": "5.3"
},
{
"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"
}
]
}
]