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CVE-2026-90070

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Last modified

CVE-2026-90070 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: tpm: st33zp24: Return zero on status read failure st33zp24_status() ignores the result of the transport read and returns data even when no byte was received. The I2C transport, for example, skips i2c_master_recv() when the register-select write is short or fails, leaving data uninitialized.

Description

In the Linux kernel, the following vulnerability has been resolved: tpm: st33zp24: Return zero on status read failure st33zp24_status() ignores the result of the transport read and returns data even when no byte was received. The I2C transport, for example, skips i2c_master_recv() when the register-select write is short or fails, leaving data uninitialized. The resulting stack value can be interpreted as TPM_STS flags and let status checks complete spuriously. The status callback cannot propagate a transport error. Return zero unless recv() reports exactly one byte. With no status bits set, callers retry or take their existing timeout or error path instead of acting on an invalid status value. This issue was found by a static analysis checker and confirmed by manual source review.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 251a7b08213af82e40e4a70cac056e245853c410, < d732cfc4befe28f02ec82ed5fd2bc2a21fbabd42; >= 251a7b08213af82e40e4a70cac056e245853c410, < 4973e8386257eed10e5433a94a53bcc6ec37d2a1; >= 251a7b08213af82e40e4a70cac056e245853c410, < 981307e2e8a930da492c2bcf763865c47c2a5165; >= 251a7b08213af82e40e4a70cac056e245853c410, < 1bfd5c54e40704ce93d128a25de3d8dd772bf183; >= 251a7b08213af82e40e4a70cac056e245853c410, < 38c26fe4522963a91d4fb02c844d8faa740fe9d1; >= 251a7b08213af82e40e4a70cac056e245853c410, < 14feaa498c20c1b7ddefe27de5329aaff822cc0d; >= 251a7b08213af82e40e4a70cac056e245853c410, < e6d7d9b665419cda3e9f91030d81c9f8ba71e51d; >= 251a7b08213af82e40e4a70cac056e245853c410, < 8b92687708f5ef980de01c2042dbd76d11f78547
LinuxLinux3.9

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-90070?
In the Linux kernel, the following vulnerability has been resolved: tpm: st33zp24: Return zero on status read failure st33zp24_status() ignores the result of the transport read and returns data even when no byte was received. The I2C transport, for example, skips i2c_master_recv() when the register-select write is short or fails, leaving data uninitialized. The resulting stack value can be interpreted as TPM_STS flags and let status checks complete spuriously. The status callback cannot propagate a transport error. Return zero unless recv() reports exactly one byte. With no status bits set, callers retry or take their existing timeout or error path instead of acting on an invalid status value. This issue was found by a static analysis checker and confirmed by manual source review.
How severe is CVE-2026-90070?
Severity scoring for CVE-2026-90070 is pending analysis.
How do I fix CVE-2026-90070?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST