CVE-2026-93089: Linux kernel · firmware: arm_scmi: Free transport channel on IDR failure
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in fbaebd380caa4e1cec9306ca00231da6518a123f : update Linux kernel when convenient.
Data as of 26 Oct 2026, 17:16 UTC
Rated Low by Threat Radar's AI analysis · 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 fbaebd380caa4e1cec9306ca00231da6518a123f, de0a4c103740cf54cf77370d47e03c9aa51aa5ee, d72e7e5f24687c0490aabf317653caffe0447aeb +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.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in– |
AI-suggested
This issue has been fixed in the Linux kernel. Users should update to the fixed versions identified by the commits fbaebd380caa4e1cec9306ca00231da6518a123f, de0a4c103740cf54cf77370d47e03c9aa51aa5ee, d72e7e5f24687c0490aabf317653caffe0447aeb, d7c60c0fe2bd452b56fe07947842d64da61b7290, and ae7980c9af698d0a7e6790d49249abc71f0fc304. Applying these updates will ensure proper cleanup of transport channels and prevent resource leaks.
Description
A vulnerability in the Linux kernel's arm_scmi firmware component involves improper cleanup of transport channels when an IDR insertion fails. The error path destroys the transport device and frees channel info without invoking the transport cleanup callback, potentially leading to resource leaks. The issue is fixed by ensuring chan_free() is called before device destruction to release resources like IRQs, mailbox channels, and shared memory properly.
References
- git.kernel.org/stable/c/ae7980c9af698d0a7e6790d49249abc71f0fc304 (opens in a new tab)
- git.kernel.org/stable/c/de0a4c103740cf54cf77370d47e03c9aa51aa5ee (opens in a new tab)
- git.kernel.org/stable/c/d7c60c0fe2bd452b56fe07947842d64da61b7290 (opens in a new tab)
- git.kernel.org/stable/c/fbaebd380caa4e1cec9306ca00231da6518a123f (opens in a new tab)
- git.kernel.org/stable/c/d72e7e5f24687c0490aabf317653caffe0447aeb (opens in a new tab)