CVE-2026-98470: Linux kernel · KVM: arm64: Don't WARN on an unknown VM ioctl in protected mode
Affects Linux kernelSource CVE Database V5
Not known to be exploited : upgrade to cc53eb5c6515e3221314624a22c9da9c80a67f63 or 49d9d295d69d07e850cae35933ba8519e2915f26 when convenient.
Data as of 26 Oct 2026, 13:47 UTC
Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in cc53eb5c6515e3221314624a22c9da9c80a67f63, 49d9d295d69d07e850cae35933ba8519e2915f26
Exploitation evidence
Disclosed: evidence found.
CVE published 18 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 Linux kernel to cc53eb5c6515e3221314624a22c9da9c80a67f63 or 49d9d295d69d07e850cae35933ba8519e2915f26.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in– |
AI-suggested
The vulnerability is fixed in the Linux kernel commits cc53eb5c6515e3221314624a22c9da9c80a67f63 and 49d9d295d69d07e850cae35933ba8519e2915f26. Users should update to these fixed versions or later to remediate the issue.
Description
A vulnerability in the Linux kernel's KVM arm64 implementation caused a WARN on unknown VM ioctl calls in protected mode. This could lead to a kernel panic if userspace issues an unrecognized ioctl, potentially tainting and crashing the pKVM host under panic_on_warn conditions. The issue was fixed in specific commits.