CVE-2026-98892: Linux kernel · firmware: arm_scmi: Validate BASE_ERROR_EVENT payload size
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in cb77a50d1114c0c9e084176301a8e094d383edfa : update Linux kernel when convenient.
Data as of 26 Oct 2026, 14:18 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 8% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in cb77a50d1114c0c9e084176301a8e094d383edfa, c0742f23ec13fb6f5e0cd884323467a6c127d3c2, bd8bc95ef2daa3bac56197cffcbf2d4c5ed42216 +4
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
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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AI-suggested
A fix is available and has been applied in multiple Linux kernel commits. Users and administrators should update to a Linux kernel version that includes the fix (commits referenced) to mitigate this vulnerability.
Description
A vulnerability in the Linux kernel's arm_scmi firmware component was fixed by validating the payload size of BASE_ERROR_EVENT messages. The flaw involved the notification parser using a count of message reports without verifying that the payload contained all the reported entries, potentially allowing truncated payloads to be processed incorrectly. The fix rejects truncated payloads before copying the report array.
References
- git.kernel.org/stable/c/4a754704698017ced0b657c92b468035faad00ed (opens in a new tab)
- git.kernel.org/stable/c/28d65a0a46435d48b96b6943c518095dff1602a1 (opens in a new tab)
- git.kernel.org/stable/c/890a9c3bf9dae90dcabded9d8e10c708a13779f7 (opens in a new tab)
- git.kernel.org/stable/c/c0742f23ec13fb6f5e0cd884323467a6c127d3c2 (opens in a new tab)
- git.kernel.org/stable/c/bd8bc95ef2daa3bac56197cffcbf2d4c5ed42216 (opens in a new tab)
- git.kernel.org/stable/c/cb77a50d1114c0c9e084176301a8e094d383edfa (opens in a new tab)
- git.kernel.org/stable/c/56e7e64cdd0e7209a58c8ec66028d63387402919 (opens in a new tab)