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VulnerabilityPublished Updated

CVE-2026-93092: Linux kernel · firmware: arm_scmi: Unregister device notifier before IDR teardown

Source GCVE Database

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Authoritative record:CVE-2026-93092· Medium

Not known to be exploited · fixed in f5e528f631425416f9b39e9d8b385c9f1ceb40d6 : update Linux kernel when convenient.

Data as of 30 Oct 2026, 16:33 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in f5e528f631425416f9b39e9d8b385c9f1ceb40d6, 492fb49eac24beecd6d3c5e4744a513e626f8dcf, 74fcaa0a3f7ad3edfde2e8c6cb8ae457a00e0b7a +3

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 17 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 53b8c25df7082edd78a3fc63e359abee0f28fa70, < f5e528f631425416f9b39e9d8b385c9f1ceb40d6
Fixed in
  • f5e528f631425416f9b39e9d8b385c9f1ceb40d6
LinuxLinuxAffected
  • ≥ 53b8c25df7082edd78a3fc63e359abee0f28fa70, < 492fb49eac24beecd6d3c5e4744a513e626f8dcf
Fixed in
  • 492fb49eac24beecd6d3c5e4744a513e626f8dcf
LinuxLinuxAffected
  • ≥ 53b8c25df7082edd78a3fc63e359abee0f28fa70, < 74fcaa0a3f7ad3edfde2e8c6cb8ae457a00e0b7a
Fixed in
  • 74fcaa0a3f7ad3edfde2e8c6cb8ae457a00e0b7a
LinuxLinuxAffected
  • ≥ 53b8c25df7082edd78a3fc63e359abee0f28fa70, < 70a26b37389846f1f29a09f7983aa3f45feff529
Fixed in
  • 70a26b37389846f1f29a09f7983aa3f45feff529
LinuxLinuxAffected
  • ≥ 53b8c25df7082edd78a3fc63e359abee0f28fa70, < 66a0bbf30cc14140fe13f63cd594a7c1ee352b75
Fixed in
  • 66a0bbf30cc14140fe13f63cd594a7c1ee352b75
LinuxLinuxAffected
  • ≥ 0c0e28e587198b5b4fd742b761cbf7ef9a7fef1c, < 3ec1f79e912fa0e1c119753c819eb3c2591e71b7
Fixed in
  • 3ec1f79e912fa0e1c119753c819eb3c2591e71b7

Description

In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Unregister device notifier before IDR teardown The requested-devices notifier looks up protocol fwnodes from the active_protocols IDR. During remove, unregister the notifier before releasing and destroying active_protocols so no notifier callback can race with the IDR teardown. Keep the bus notifier registered until after the protocol state is torn down, matching the existing remove ordering for SCMI bus users.

References

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