VulnerabilityPublished 17 Sep 2026Updated 30 Oct 2026

CVE-2026-90433: Linux kernel · spi: oc-tiny: switch to managed controller allocation

Source GCVE Database

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Authoritative record:CVE-2026-90433· High

Not known to be exploited · fixed in ef5cc4a8c088d05549f71950a72b5deff5000fd7 : patch Linux kernel soon.

Data as of 30 Oct 2026, 18:21 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 ef5cc4a8c088d05549f71950a72b5deff5000fd7, d710f43ce30975d197f73c543bfe47b958d8ba17, a2f1c58864fc3612c230a9d5cc1929e1ffe348ac +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-mj54-2c5f-648c

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ ce792580ea2ce6f7259b45124e9ccc4574c31606, < ef5cc4a8c088d05549f71950a72b5deff5000fd7	Fixed in ef5cc4a8c088d05549f71950a72b5deff5000fd7
LinuxLinux	Affected ≥ ce792580ea2ce6f7259b45124e9ccc4574c31606, < d710f43ce30975d197f73c543bfe47b958d8ba17	Fixed in d710f43ce30975d197f73c543bfe47b958d8ba17
LinuxLinux	Affected ≥ ce792580ea2ce6f7259b45124e9ccc4574c31606, < a2f1c58864fc3612c230a9d5cc1929e1ffe348ac	Fixed in a2f1c58864fc3612c230a9d5cc1929e1ffe348ac
LinuxLinux	Affected ≥ ce792580ea2ce6f7259b45124e9ccc4574c31606, < 9265fa8190312b87637def1382d36fc16de3b8e8	Fixed in 9265fa8190312b87637def1382d36fc16de3b8e8
LinuxLinux	Affected ≥ ce792580ea2ce6f7259b45124e9ccc4574c31606, < 0260c94453a08491640e61f8cf0c384edbe7bd11	Fixed in 0260c94453a08491640e61f8cf0c384edbe7bd11
LinuxLinux	Affected ≥ ce792580ea2ce6f7259b45124e9ccc4574c31606, < 1cd16c8d68f58e54abb8f331d05469237200631f	Fixed in 1cd16c8d68f58e54abb8f331d05469237200631f

AI-suggested

A fix is available that switches the controller allocation to devm_spi_alloc_host(), ensuring proper managed resource release order. Users should update to the patched Linux kernel version containing this fix. No additional mitigation is required beyond applying the official patch.

Description

A use-after-free vulnerability in the Linux kernel's spi oc-tiny driver was addressed by switching to managed controller allocation. The issue arises because the controller is allocated non-managed while the interrupt is registered with a managed request. During device removal, an interrupt handler can access freed memory, leading to potential memory corruption.

References

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