VulnerabilityPublished 17 Sep 2026Updated 21 Oct 2026

CVE-2026-93090: Linux kernel · firmware: arm_scmi: Clean up channels on setup failure

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in e835bd88ce9ddd858c186317f79e76ffa689c8db : update Linux kernel when convenient.

Data as of 26 Oct 2026, 17:30 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in e835bd88ce9ddd858c186317f79e76ffa689c8db, d33b2b68bce6d5e28ee77f0952d7f3dc82bbe610, b8479e1f0219cf18bfdfeca97994e563a0afb602 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 17 Sep 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.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1, < e835bd88ce9ddd858c186317f79e76ffa689c8db	Fixed in e835bd88ce9ddd858c186317f79e76ffa689c8db
LinuxLinux	Affected ≥ 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1, < d33b2b68bce6d5e28ee77f0952d7f3dc82bbe610	Fixed in d33b2b68bce6d5e28ee77f0952d7f3dc82bbe610
LinuxLinux	Affected ≥ 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1, < b8479e1f0219cf18bfdfeca97994e563a0afb602	Fixed in b8479e1f0219cf18bfdfeca97994e563a0afb602
LinuxLinux	Affected ≥ 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1, < 687d67be3d87894ef12e8a164434612e0b53cfae	Fixed in 687d67be3d87894ef12e8a164434612e0b53cfae
LinuxLinux	Affected ≥ 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1, < 43aad7687238d6178cb3fdac53c8de3f43bfa028	Fixed in 43aad7687238d6178cb3fdac53c8de3f43bfa028
LinuxLinux	Affected =6.3	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Clean up channels on setup failure scmi_channels_setup() can fail after the common BASE channel or earlier protocol channels have already been registered in the TX/RX IDRs. Route this failure through the existing channel cleanup label so the transport channels, transport devices and IDR state created before the failure are released before the probe error path frees the SCMI instance ID.

References

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