CVE-2026-93081: Linux kernel · firmware: arm_scmi: Fix SCMI device destroy lifetimes
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in d8ecdceeb90cd2c265b222a7b65487faf68fea73 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 20:07 UTC
Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in d8ecdceeb90cd2c265b222a7b65487faf68fea73, c59b3393df1348a12308aaabd5fbc58ed6b21cf5, a60bc2df2d323cc1342f0cf95563cae266801e20 +7
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
|
| LinuxLinux | Affected
| Fixed in– |
AI-suggested
A fix is available and has been applied in Linux kernel versions 6.6.160, 6.12.114, 5.16, 6.2, 6.15, and later. Users and administrators should upgrade to these fixed kernel versions to remediate the vulnerability. No additional mitigation steps are indicated by the vendor advisory.
Description
CVE-2026-93081 is a vulnerability in the Linux kernel's arm_scmi firmware component involving improper device lifetime management. The flaw occurs because the reference to a child device is dropped prematurely, allowing concurrent unregister operations to release the device while it is still in use. This can lead to use-after-free conditions. The issue is addressed by retaining the device reference until the device destroy process completes and by ensuring the SCMI bus ID is not reused prematurely. Multiple Linux kernel versions are affected and have been fixed in later releases.
References
- git.kernel.org/stable/c/d8ecdceeb90cd2c265b222a7b65487faf68fea73 (opens in a new tab)
- git.kernel.org/stable/c/916e27f71a80f6d77c48d1a1a5782d6d5ef9017c (opens in a new tab)
- git.kernel.org/stable/c/a60bc2df2d323cc1342f0cf95563cae266801e20 (opens in a new tab)
- git.kernel.org/stable/c/c59b3393df1348a12308aaabd5fbc58ed6b21cf5 (opens in a new tab)
- git.kernel.org/stable/c/6abe8fe36b29ff51d1a42c2f338972883f4751a5 (opens in a new tab)