CVE-2026-98892: Linux kernel · firmware: arm_scmi: Validate BASE_ERROR_EVENT payload size
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 28 Oct 2026, 01:29 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
Exploitation evidence
Disclosed: evidence found.
CVE published 23 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
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Validate BASE_ERROR_EVENT payload size BASE_ERROR_EVENT carries a variable number of message reports, with the count encoded in error_status. The notification parser used that count without checking whether the received payload contained all reported entries. Reject truncated payloads before copying the report array.
References
- ubuntu.com/security/CVE-2026-98892 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-98892 (opens in a new tab)
- git.kernel.org/stable/c/28d65a0a46435d48b96b6943c518095dff1602a1 (opens in a new tab)
- git.kernel.org/stable/c/4a754704698017ced0b657c92b468035faad00ed (opens in a new tab)
- git.kernel.org/stable/c/56e7e64cdd0e7209a58c8ec66028d63387402919 (opens in a new tab)
- git.kernel.org/stable/c/890a9c3bf9dae90dcabded9d8e10c708a13779f7 (opens in a new tab)
- git.kernel.org/stable/c/bd8bc95ef2daa3bac56197cffcbf2d4c5ed42216 (opens in a new tab)
- git.kernel.org/stable/c/c0742f23ec13fb6f5e0cd884323467a6c127d3c2 (opens in a new tab)
- git.kernel.org/stable/c/cb77a50d1114c0c9e084176301a8e094d383edfa (opens in a new tab)