CVE-2026-98221: Linux kernel · KEYS: trusted: Fix tpm2_load_cmd() boundary check
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in cc86227fea28aed86c1fb52a884560b4440da198 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 12:55 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in cc86227fea28aed86c1fb52a884560b4440da198, b020b447338872440142fe8a57350a483da86b7a, 134825dfc971fbf2b1d0f58f0b3bce8332ad0afb +4
Exploitation evidence
Disclosed: evidence found.
CVE published 6 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
AI-suggested
A fix for this vulnerability is available and has been applied in specific Linux kernel commits. Users and administrators should update their Linux kernel to a version that includes these fixes to mitigate the issue.
Description
A vulnerability in the Linux kernel's KEYS subsystem related to the trusted TPM2 interface was fixed by correcting boundary checks in the tpm2_load_cmd() function. The issue involved improper boundary checks against the ASN.1 payload size, which was addressed by using the decoded blob size for validation.
References
- git.kernel.org/stable/c/cc86227fea28aed86c1fb52a884560b4440da198 (opens in a new tab)
- git.kernel.org/stable/c/b020b447338872440142fe8a57350a483da86b7a (opens in a new tab)
- git.kernel.org/stable/c/3fd487c69ad3161e358c33c170bab0cf02a071b7 (opens in a new tab)
- git.kernel.org/stable/c/5afa57ea91481c6c49f194b0f5a5c4d96a4d7348 (opens in a new tab)
- git.kernel.org/stable/c/9ddbc5f4bb498aff8096a5231574858a4bffee4f (opens in a new tab)
- git.kernel.org/stable/c/134825dfc971fbf2b1d0f58f0b3bce8332ad0afb (opens in a new tab)
- git.kernel.org/stable/c/114f00d738f15dd8c7318369edcdc53dd6d08763 (opens in a new tab)