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NVD / CVE Program· CNA Linux

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

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.20% (FIRST EPSS).
  • Fixed version: Linux Linux 0260c94453a08491640e61f8cf0c384edbe7bd11, 1cd16c8d68f58e54abb8f331d05469237200631f, 9265fa8190312b87637def1382d36fc16de3b8e8.

Low priority for now. Upgrade to Linux Linux 0260c94453a08491640e61f8cf0c384edbe7bd11, 1cd16c8d68f58e54abb8f331d05469237200631f, 9265fa8190312b87637def1382d36fc16de3b8e8 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: spi: oc-tiny: switch to managed controller allocation The controller is allocated with the non-managed spi_alloc_host() while the interrupt is registered with devm_request_irq(). During removal, spi_bitbang_stop() only unregisters the controller; the subsequent spi_controller_put() then frees the controller together with its embedded driver-private devdata, which is the IRQ handler's dev_id. The devm_request_irq() release action (free_irq()), which drains the handler, does not run until after .remove() returns. A late or latched interrupt can therefore reach tiny_spi_irq() and dereference already-freed memory (e.g. hw->base). Switch to devm_spi_alloc_host() so that the devres LIFO order releases the controller only after free_irq() has drained the handler, and drop the now-redundant spi_controller_put() from .remove(). The probe error path is simplified to direct returns. This issue was found by an in-house static analysis tool.

—No exploit Fix available
Published
Sep 17, 2026
Updated
Oct 30, 2026
EPSS
0.2% · 11th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

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Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 2.6.39affected
    • ce792580ea2ce6f7259b45124e9ccc4574c31606 and later · before a2f1c58864fc3612c230a9d5cc1929e1ffe348acaffected · git
    • ce792580ea2ce6f7259b45124e9ccc4574c31606 and later · before 9265fa8190312b87637def1382d36fc16de3b8e8affected · git
    • ce792580ea2ce6f7259b45124e9ccc4574c31606 and later · before 0260c94453a08491640e61f8cf0c384edbe7bd11affected · git
    • ce792580ea2ce6f7259b45124e9ccc4574c31606 and later · before ef5cc4a8c088d05549f71950a72b5deff5000fd7affected · git
    • ce792580ea2ce6f7259b45124e9ccc4574c31606 and later · before 1cd16c8d68f58e54abb8f331d05469237200631faffected · git
    • ce792580ea2ce6f7259b45124e9ccc4574c31606 and later · before d710f43ce30975d197f73c543bfe47b958d8ba17affected · git
    • before 2.6.39not affected · semver
    • 6.1.191 and later · up to and including 6.1.*not affected · semver
    • 6.6.160 and later · up to and including 6.6.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxfrom 0—
Debian:12linux-6.12before 6.12.111-1~deb12u16.12.111-1~deb12u1
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.6-17.2.6-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-90431Sep 17, 2026 · remoteproc: Prevent crash handling to race with rproc_del()
    0Monitor
  • ← EarlierCVE-2026-90432Sep 17, 2026 · sched_ext: Abort directly from the hardlockup handler
    0Monitor
  • Later →CVE-2026-90434Sep 17, 2026 · isofs: release zisofs block pointer buffer head
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux0260c94453a08491640e61f8cf0c384edbe7bd11Vendor (CNA)
Linux Linux1cd16c8d68f58e54abb8f331d05469237200631fVendor (CNA)
Linux Linux9265fa8190312b87637def1382d36fc16de3b8e8Vendor (CNA)
Linux Linuxa2f1c58864fc3612c230a9d5cc1929e1ffe348acVendor (CNA)
Linux Linuxd710f43ce30975d197f73c543bfe47b958d8ba17Vendor (CNA)
Linux Linuxef5cc4a8c088d05549f71950a72b5deff5000fd7Vendor (CNA)
debian:linux6.12.111-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.111-1~deb12u1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

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No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

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Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

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References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

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