In Lenovo systems, SMM BIOS Write Protection is used to prevent writes to SPI Flash. While this provides sufficient protection, an additional layer of protection is provided by SPI Protected Range Registers (PRx). After resuming from S3 sleep mode in various versions of BIOS for some Lenovo ThinkPad systems, the PRx is not set. This does not impact the SMM BIOS Write Protection, which keeps systems protected.
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No Fix Known
No patch has been released yet. Apply workarounds or mitigations where available.
| Vendor | Product | Versions | Fixed In |
|---|---|---|---|
| lenovo | thinkpad_t490_\(20nx\)_firmware | n2iet90w | - |
| lenovo | thinkpad_t490_\(20qx\)_firmware | n2iet90w | - |
| lenovo | thinkpad_t490_\(20rx\)_firmware |
Published
CVE disclosed publicly
Last Modified
Most recent update
Indexed to CVEInsight
Added to this platform
AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
10
Affected Products
2
References
lenovo / thinkpad_t490_\(20nx\)_firmware
| n2ret16w |
| - |
| lenovo | thinkpad_t490s_\(20nx\)_firmware | n2jet89w | - |
| lenovo | thinkpad_t495_drift_firmware | 2020-08-30 | - |
| lenovo | thinkpad_t590_\(20nx\)_firmware | n2iet90w | - |
| lenovo | thinkpad_x1_carbon_\(20qx\)_firmware | n2het54w | - |
| lenovo | thinkpad_x1_yoga_\(20qx\)_firmware | n2het54w | - |
| lenovo | thinkpad_x390_\(20qx\)_firmware | n2jet89w | - |
| lenovo | thinkpad_x390_\(20sx\)_firmware | n2set18w | - |
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Exploitability
Impact