An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. An SMM callout vulnerability in the SMM driver in UsbLegacyControlSmm leads to possible arbitrary code execution in SMM and escalation of privileges. An attacker could overwrite the function pointers in the EFI_BOOT_SERVICES table before the USB SMI handler triggers. (This is not exploitable from code running in the operating system.)
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No Fix Known
No patch has been released yet. Apply workarounds or mitigations where available.
Published
CVE disclosed publicly
Last Modified
Most recent update
Indexed to CVEInsight
Added to this platform
AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
6
Affected Products
6
References
insyde / insydeh2o
| - |
| insyde | insydeh2o | 5.4 - 05.44.28 | - |
| insyde | insydeh2o | 5.5 - 05.52.28 | - |
| insyde | insydeh2o | 5.0 - 05.09.38 | - |
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Exploitability
Impact