VulnerabilityPublished 17 Sep 2026Updated 30 Oct 2026

CVE-2026-92506: Linux kernel · firmware: arm_scmi: Fix requested device removal race

Source GCVE Database

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Authoritative record:CVE-2026-92506· High

Not known to be exploited · fixed in c3d4ef1c0ca6917aad6f1093b49f3932944a8c19 : patch Linux kernel soon.

Data as of 30 Oct 2026, 18:18 UTC

Severity

High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none

Patch: Available – fixed in c3d4ef1c0ca6917aad6f1093b49f3932944a8c19, 803e50af43ab1c3f76cbc744e496532ec151f305, 21d35c5f46e99e9047bb9ded3ecb5ab440dd75b3 +3

Exploitation evidence

Disclosed: evidence found.
CVE published 17 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 30 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.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), 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-5f27-8j35-25fh

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ d3cd7c525fd2ecce3a6c963f314969a54783d211, < c3d4ef1c0ca6917aad6f1093b49f3932944a8c19	Fixed in c3d4ef1c0ca6917aad6f1093b49f3932944a8c19
LinuxLinux	Affected ≥ a6fe96b2e371d5fd300cca24459cdcf471c2c741, < 803e50af43ab1c3f76cbc744e496532ec151f305	Fixed in 803e50af43ab1c3f76cbc744e496532ec151f305
LinuxLinux	Affected ≥ d3cd7c525fd2ecce3a6c963f314969a54783d211, < 21d35c5f46e99e9047bb9ded3ecb5ab440dd75b3	Fixed in 21d35c5f46e99e9047bb9ded3ecb5ab440dd75b3
LinuxLinux	Affected ≥ d3cd7c525fd2ecce3a6c963f314969a54783d211, < 2ff7713b7308cd6bea3328f7cd750b5eaab42af3	Fixed in 2ff7713b7308cd6bea3328f7cd750b5eaab42af3
LinuxLinux	Affected ≥ d3cd7c525fd2ecce3a6c963f314969a54783d211, < 2c4097e6c4aed276c5e9ec2ab331ab397ea780bf	Fixed in 2c4097e6c4aed276c5e9ec2ab331ab397ea780bf
LinuxLinux	Affected ≥ d3cd7c525fd2ecce3a6c963f314969a54783d211, < 1c35915eaaa81a12340c838c5c2ccb02be2194c3	Fixed in 1c35915eaaa81a12340c838c5c2ccb02be2194c3

AI-suggested

A fix for this race condition has been implemented in the Linux kernel. Users should apply the official kernel updates that include this patch once available. Since this is a kernel-level issue, upgrading to a fixed kernel version is the recommended mitigation.

Description

CVE-2026-92506 is a race condition vulnerability in the Linux kernel's arm_scmi firmware component related to device removal. The flaw occurs when two SCMI drivers for the same protocol unregister concurrently, leading to a use-after-free and potential double free of a list head structure. The issue has been fixed by reordering list and IDR updates to complete before releasing the mutex and moving notifier callbacks outside the critical section.

References

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