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CVE-2026-99221

UnknownEPSS 0.17%

Last modified

CVE-2026-99221 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: keys/trusted_keys: return immediately after TPM unseal failure trusted_tpm_unseal() proceeds to pcrlock() when the TPM unseal operation fails. If pcrlock() succeeds, its return value overwrites the unseal error, causing key instantiation to succeed. Return immediately when unseal fails to preserve the original error.. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: keys/trusted_keys: return immediately after TPM unseal failure trusted_tpm_unseal() proceeds to pcrlock() when the TPM unseal operation fails. If pcrlock() succeeds, its return value overwrites the unseal error, causing key instantiation to succeed. Return immediately when unseal fails to preserve the original error.

Metrics

EPSS Probability
0.17%

6.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

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

VendorProductVersions
LinuxLinux>= 5d0682be318910e028bdf57c90a1695ffc34be37, < 4876f09ce222e140a73aad950882b3605440c935; >= 5d0682be318910e028bdf57c90a1695ffc34be37, < 2d92a0f87c338a08367aff05edd1ade86da4ac8d; >= 5d0682be318910e028bdf57c90a1695ffc34be37, < 234d09bb3b3d84851d4b3246272addc30f3353eb; >= 5d0682be318910e028bdf57c90a1695ffc34be37, < 6e359d8cb8580b9874801dea930086effd4d9c62; >= 5d0682be318910e028bdf57c90a1695ffc34be37, < e55d48f21f591a9fe80d26b5fbd1912ea725d9e6; >= 5d0682be318910e028bdf57c90a1695ffc34be37, < 63b19ec2863b2cb5279b746ecd3d6210b1a93945; >= 5d0682be318910e028bdf57c90a1695ffc34be37, < ed697a5f667435bbb1cedbe5bd9f300de645047d; >= 5d0682be318910e028bdf57c90a1695ffc34be37, < f92d0ccb05bf9089072cb067dda0dffd5394c4ef
LinuxLinux5.13

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-99221?
In the Linux kernel, the following vulnerability has been resolved: keys/trusted_keys: return immediately after TPM unseal failure trusted_tpm_unseal() proceeds to pcrlock() when the TPM unseal operation fails. If pcrlock() succeeds, its return value overwrites the unseal error, causing key instantiation to succeed. Return immediately when unseal fails to preserve the original error.
How severe is CVE-2026-99221?
Severity scoring for CVE-2026-99221 is pending analysis. The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2026-99221?
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