VulnerabilityPublished 23 Oct 2026

CVE-2026-98892: Linux kernel · firmware: arm_scmi: Validate BASE_ERROR_EVENT payload size

Source GCVE Database

Authoritative record:CVE-2026-98892· Medium

Not known to be exploited · fixed in cb77a50d1114c0c9e084176301a8e094d383edfa : update Linux kernel when convenient.

Data as of 26 Oct 2026, 14:05 UTC

Severity

Medium

Rated by Threat Radar · 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.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

ghsa-73qm-h5pg-gqfm

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 585dfab3fb80e67b3a54790b3d5ef2991feb3950, < cb77a50d1114c0c9e084176301a8e094d383edfa	Fixed in cb77a50d1114c0c9e084176301a8e094d383edfa
LinuxLinux	Affected ≥ 585dfab3fb80e67b3a54790b3d5ef2991feb3950, < c0742f23ec13fb6f5e0cd884323467a6c127d3c2	Fixed in c0742f23ec13fb6f5e0cd884323467a6c127d3c2
LinuxLinux	Affected ≥ 585dfab3fb80e67b3a54790b3d5ef2991feb3950, < bd8bc95ef2daa3bac56197cffcbf2d4c5ed42216	Fixed in bd8bc95ef2daa3bac56197cffcbf2d4c5ed42216
LinuxLinux	Affected ≥ 585dfab3fb80e67b3a54790b3d5ef2991feb3950, < 890a9c3bf9dae90dcabded9d8e10c708a13779f7	Fixed in 890a9c3bf9dae90dcabded9d8e10c708a13779f7
LinuxLinux	Affected ≥ 585dfab3fb80e67b3a54790b3d5ef2991feb3950, < 56e7e64cdd0e7209a58c8ec66028d63387402919	Fixed in 56e7e64cdd0e7209a58c8ec66028d63387402919
LinuxLinux	Affected ≥ 585dfab3fb80e67b3a54790b3d5ef2991feb3950, < 28d65a0a46435d48b96b6943c518095dff1602a1	Fixed in 28d65a0a46435d48b96b6943c518095dff1602a1

AI-suggested

A fix has been applied to the Linux kernel to validate the BASE_ERROR_EVENT payload size and reject truncated payloads. Users should update to the fixed kernel version once available. Patch status is not explicitly confirmed in the provided data; check the official Linux kernel advisories for the exact fixed versions and remediation guidance.

Description

A vulnerability in the Linux kernel's arm_scmi firmware component was resolved 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 reported entries, potentially leading to processing of truncated payloads. The fix rejects truncated payloads before copying the report array.

References

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