CVE-2026-98221
Received Received - Intake

BaseFortify

Publication date: 2026-10-06

Last updated on: 2026-10-06

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: KEYS: trusted: Fix tpm2_load_cmd() boundary check tpm2_load_cmd() does boundary checks against the ASN.1 size i.e., payload->blob_len. Address this by passing the decoded blob size to tpm2_load_cmd(), and use it for the boundary checks.

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Meta Information

Published
2026-10-06
Last Modified
2026-10-06
Generated
2026-10-19
AI Q&A
2026-10-06
EPSS Evaluated
2026-10-18
NVD
CVE-2026-98221
EUVD
EUVD-2026-93149

Affected Vendors & Products

Showing 8 associated CPEs
Vendor Product Version / Range
Linux Linux f2219745250f388edacabe6cca73654131c67d0a
Linux Linux f2219745250f388edacabe6cca73654131c67d0a
Linux Linux f2219745250f388edacabe6cca73654131c67d0a
Linux Linux f2219745250f388edacabe6cca73654131c67d0a
Linux Linux f2219745250f388edacabe6cca73654131c67d0a
Linux Linux f2219745250f388edacabe6cca73654131c67d0a
Linux Linux f2219745250f388edacabe6cca73654131c67d0a
Linux Linux 5.13

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability in the Linux kernel involves a boundary check issue in the tpm2_load_cmd() function. The function was incorrectly using the ASN.1 size for boundary checks instead of the decoded blob size, which could lead to improper validation of input data.

Detection Guidance

This vulnerability is specific to the Linux kernel's trusted keys subsystem and TPM2 handling. Detection requires checking kernel versions and examining the tpm2_load_cmd() function for boundary check issues. No direct network detection commands are provided in the context.

Impact Analysis

This vulnerability could allow an attacker to bypass security checks by providing maliciously crafted input data, potentially leading to unauthorized access or execution of arbitrary code in the kernel. It primarily affects systems using TPM 2.0 for trusted computing.

Compliance Impact

This vulnerability does not directly affect compliance with GDPR, HIPAA, or similar standards as it is a low-level kernel issue related to boundary checks in TPM2 command handling. No evidence suggests it impacts data protection, encryption, or access control mechanisms that these regulations address.

Mitigation Strategies

Update your Linux kernel to the latest patched version to resolve the tpm2_load_cmd() boundary check issue. Monitor vendor advisories for kernel updates and apply them promptly.

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