What is CVE-2026-98221?

CVE-2026-98221 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 5.13 onward and patched in 5.15.222, 6.1.189, 6.6.158 and others. CVE-2026-98221 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-98221?

CVE-2026-98221 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2026-98221?

Yes, CVE-2026-98221 has been patched. Fixed versions include 5.15.222, 6.1.189, 6.6.158 and others. If you are running Linux kernel 5.13 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-98221 actively exploited?

CVE-2026-98221 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-98221

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.

Package Linux Kernel

Published 2026-10-06

Last modified 2026-10-06

Patch available

Yes

Affected versions

Linux kernel versions 5.13 and later are affected. Fixed in 5.15.222, 6.1.189, 6.6.158, 6.12.112, 6.18.54, 7.2.8, 7.3-rc4 and their respective stable series.

Affected from

≥ 5.13

Fixed in

✓ 5.15.222 5.15.x ✓ 6.1.189 6.1.x ✓ 6.6.158 6.6.x ✓ 6.12.112 6.12.x ✓ 6.18.54 6.18.x ✓ 7.2.8 7.2.x ✓ 7.3-rc4

References

7 total

Showing 5 of 7 references View all on NVD

Frequently asked questions

What is CVE-2026-98221?

CVE-2026-98221 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.13 onward and has been patched in 5.15.222, 6.1.189, 6.6.158 and others. CVE-2026-98221 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2026-98221?

Yes. CVE-2026-98221 has been patched. Fixed versions include 5.15.222, 6.1.189, 6.6.158 and others. If you are running Linux kernel 5.13 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-98221 actively exploited?

No. CVE-2026-98221 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.