In the Linux kernel, the following vulnerability has been resolved: tpm: tpm_i2c_nuvoton: disable IRQ on wait timeout i2c_nuvoton_wait_for_stat()… (CVE-2026-80930)
A vulnerability in the Linux kernel's TPM driver for Nuvoton I2C devices was fixed. The issue involved improper handling of IRQ enabling and disabling during wait timeouts in the i2c_nuvoton_wait_for_stat() function, which could leave IRQs enabled incorrectly. The fix ensures IRQs are disabled on wait timeout and preserves the original error code on interrupted waits.
AI Analysis
Technical Summary
The Linux kernel TPM driver for Nuvoton I2C devices had a flaw where the function i2c_nuvoton_wait_for_stat() enabled IRQs before waiting for an interrupt handler to report status changes. If the wait timed out or was interrupted before the handler ran, the function returned without disabling the IRQ, causing an imbalance in IRQ handling. The patch disables the IRQ before exiting the failed wait path and preserves the original error code for interrupted waits instead of converting it to a timeout error.
Potential Impact
Improper IRQ handling could lead to inconsistent device states or unexpected behavior in the TPM driver, potentially affecting system stability or TPM operations. No specific exploitation details or active exploits are reported.
Mitigation Recommendations
A fix has been applied to the Linux kernel to disable IRQs properly on wait timeouts in the TPM Nuvoton I2C driver. Users should update to the patched kernel version containing this fix. No additional mitigation steps are indicated.
In the Linux kernel, the following vulnerability has been resolved: tpm: tpm_i2c_nuvoton: disable IRQ on wait timeout i2c_nuvoton_wait_for_stat()… (CVE-2026-80930)
Description
A vulnerability in the Linux kernel's TPM driver for Nuvoton I2C devices was fixed. The issue involved improper handling of IRQ enabling and disabling during wait timeouts in the i2c_nuvoton_wait_for_stat() function, which could leave IRQs enabled incorrectly. The fix ensures IRQs are disabled on wait timeout and preserves the original error code on interrupted waits.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel TPM driver for Nuvoton I2C devices had a flaw where the function i2c_nuvoton_wait_for_stat() enabled IRQs before waiting for an interrupt handler to report status changes. If the wait timed out or was interrupted before the handler ran, the function returned without disabling the IRQ, causing an imbalance in IRQ handling. The patch disables the IRQ before exiting the failed wait path and preserves the original error code for interrupted waits instead of converting it to a timeout error.
Potential Impact
Improper IRQ handling could lead to inconsistent device states or unexpected behavior in the TPM driver, potentially affecting system stability or TPM operations. No specific exploitation details or active exploits are reported.
Mitigation Recommendations
A fix has been applied to the Linux kernel to disable IRQs properly on wait timeouts in the TPM Nuvoton I2C driver. Users should update to the patched kernel version containing this fix. No additional mitigation steps are indicated.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-6qqr-xmx9-c73w
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-80930"]
Threat ID: 6aa4a03355bf5e2cf5a873fb
Added to database: 09/12/2026, 00:43:31 UTC
Last enriched: 09/12/2026, 01:27:44 UTC
Last updated: 09/12/2026, 01:52:07 UTC
Views: 3
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