CVE-2022-29276

HIGH

8.2

CVSS Score

Published: November 15, 2022 at 12:00 AM UTC

Updated: June 17, 2026 at 04:39 AM UTC

1 product affected across 1 vendorKernel

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Severity

HIGH8.2

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

SMI functions in AhciBusDxe use untrusted inputs leading to corruption of SMRAM. SMI functions in AhciBusDxe use untrusted inputs leading to corruption of SMRAM. This issue was discovered by Insyde during security review. It was fixed in: Kernel 5.0: version 05.09.18 Kernel 5.1: version 05.17.18 Kernel 5.2: version 05.27.18 Kernel 5.3: version 05.36.18 Kernel 5.4: version 05.44.18 Kernel 5.5: version 05.52.18 https://www.insyde.com/security-pledge/SA-2022059

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Kernel · Insyde

95%

5.0 ≤ v < 5.0.05.09.185.1 ≤ v < 5.1.05.17.185.2 ≤ v < 5.2.05.27.185.3 ≤ v < 5.3.05.36.185.4 ≤ v < 5.4.05.44.185.5 ≤ v < 5.5.05.52.18

Affected range stops below 5.0.05.09.18, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.1.05.17.18, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.2.05.27.18, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.3.05.36.18, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.4.05.44.18, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.5.05.52.18, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Vendor Advisory

Source: [email protected]

https://www.insyde.com/security-pledge

Vendor Advisory

Source: [email protected]

https://www.insyde.com/security-pledge/SA-2022059

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.2HIGHCISA-ADP

Attack Vector: LOCAL
Complexity: LOW
Privileges: HIGH
User Interaction: NONE
Scope: CHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-787

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