VulnerabilityPublished 17 Sep 2026Updated 30 Oct 2026

CVE-2026-93089: Linux kernel · firmware: arm_scmi: Free transport channel on IDR failure

Source GCVE Database

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Authoritative record:CVE-2026-93089· Low

Not known to be exploited · fixed in fbaebd380caa4e1cec9306ca00231da6518a123f : update Linux kernel when convenient.

Data as of 30 Oct 2026, 18:18 UTC

Severity

Low

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

Thin evidence

One scorer or none

Patch: Available – fixed in fbaebd380caa4e1cec9306ca00231da6518a123f, de0a4c103740cf54cf77370d47e03c9aa51aa5ee, d72e7e5f24687c0490aabf317653caffe0447aeb +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-x7f6-mwmw-m629

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1, < fbaebd380caa4e1cec9306ca00231da6518a123f	Fixed in fbaebd380caa4e1cec9306ca00231da6518a123f
LinuxLinux	Affected ≥ 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1, < de0a4c103740cf54cf77370d47e03c9aa51aa5ee	Fixed in de0a4c103740cf54cf77370d47e03c9aa51aa5ee
LinuxLinux	Affected ≥ 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1, < d72e7e5f24687c0490aabf317653caffe0447aeb	Fixed in d72e7e5f24687c0490aabf317653caffe0447aeb
LinuxLinux	Affected ≥ 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1, < d7c60c0fe2bd452b56fe07947842d64da61b7290	Fixed in d7c60c0fe2bd452b56fe07947842d64da61b7290
LinuxLinux	Affected ≥ 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1, < ae7980c9af698d0a7e6790d49249abc71f0fc304	Fixed in ae7980c9af698d0a7e6790d49249abc71f0fc304
LinuxLinux	Affected ≥ 22f7f35fd71b597a5d916e41d7646be6ee530c86, < 10fae57504ee0ef791d145278b339184cd9db45f	Fixed in 10fae57504ee0ef791d145278b339184cd9db45f

AI-suggested

A fix has been implemented in the Linux kernel to call chan_free() before destroying the device on IDR insertion failure, ensuring proper cleanup of transport-specific resources. Users should apply the official kernel update containing this fix once available. No additional mitigation steps are indicated.

Description

A vulnerability in the Linux kernel's arm_scmi firmware component involves improper resource cleanup when an IDR insertion fails after transport channel setup. This can lead to transport-specific resources such as IRQs, mailbox channels, and shared memory not being released properly.

References

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