CVE-2026-98221
KEYS: trusted: Fix tpm2_load_cmd() boundary check
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.
INFO
Published Date :
Oct. 6, 2026, 9:18 a.m.
Last Modified :
Oct. 19, 2026, 10:18 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Update the Linux kernel to the latest version.
- Ensure tpm2_load_cmd() uses decoded blob size for checks.
- Verify integrity of ASN.1 size checks.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-98221.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-98221 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-98221
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-98221 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-98221 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 19, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/98xxx/CVE-2026-98221.json">CVE-2026-98221</a> -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 06, 2026
Action Type Old Value New Value Added 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. Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/98xxx/CVE-2026-98221.json">CVE-2026-98221</a> Added Reference https://git.kernel.org/stable/c/114f00d738f15dd8c7318369edcdc53dd6d08763 Added Reference https://git.kernel.org/stable/c/134825dfc971fbf2b1d0f58f0b3bce8332ad0afb Added Reference https://git.kernel.org/stable/c/3fd487c69ad3161e358c33c170bab0cf02a071b7 Added Reference https://git.kernel.org/stable/c/5afa57ea91481c6c49f194b0f5a5c4d96a4d7348 Added Reference https://git.kernel.org/stable/c/9ddbc5f4bb498aff8096a5231574858a4bffee4f Added Reference https://git.kernel.org/stable/c/b020b447338872440142fe8a57350a483da86b7a Added Reference https://git.kernel.org/stable/c/cc86227fea28aed86c1fb52a884560b4440da198