# i3c: master: Fix use-after-free of master->this

CVE record · `CVE-2026-93200`

- **Identifiers:** `CVE-2026-93200`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 17 Sept 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 17 Sept 2026, 16:12 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 to before a9b9cae0bd887ef0d438887f20b0a417491e45f0` (git)
  - affected: `3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 to before 94af669037d129914828a851d8b2a79b4537b73f` (git)
  - affected: `3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 to before e766605a0490723df7b61e6abd0c392889732dd7` (git)
  - affected: `3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 to before 027679d613ea73b8a00831369ec34eea804ce1bd` (git)
  - affected: `3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 to before 23a1c4288a60e253a05a882bd8928ed61beb4a48` (git)
  - affected: `3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 to before 4f3145db05fede36b35f8249b8acde5bd5d54864` (git)
  - affected: `3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 to before 50034d8d0f797c3a7a599f750a7d3e792e80dea5` (git)
  - affected: `3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 to before feb0ed76601f3c2f91f08688c5a7d8b9d382f720` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.0`
  - unaffected: `before 5.0` (semver)
  - unaffected: `5.10.273 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.224 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.112 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.52 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.6 to 7.2.*, inclusive` (semver)
  - unaffected: `7.3 to *, inclusive` (original_commit_for_fix)
  - Other versions: affected

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> The Linux kernel i3c master code from 5.0, before the listed fixes, can free an internal pointer during device detach while sysfs callbacks still use it, causing a use-after-free. The source gives few details on who can trigger it. Upgrade to 5.10.273, 5.15.224, 6.1.191, 6.6.160, or a later release in those series.

Written 12 Nov 2026.

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0016, the 5th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 17 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-93200](https://www.cve.org/CVERecord?id=CVE-2026-93200)
- [NVD: CVE-2026-93200](https://nvd.nist.gov/vuln/detail/CVE-2026-93200)

### References from the CNA

- <https://git.kernel.org/stable/c/a9b9cae0bd887ef0d438887f20b0a417491e45f0>
- <https://git.kernel.org/stable/c/94af669037d129914828a851d8b2a79b4537b73f>
- <https://git.kernel.org/stable/c/e766605a0490723df7b61e6abd0c392889732dd7>
- <https://git.kernel.org/stable/c/027679d613ea73b8a00831369ec34eea804ce1bd>
- <https://git.kernel.org/stable/c/23a1c4288a60e253a05a882bd8928ed61beb4a48>
- <https://git.kernel.org/stable/c/4f3145db05fede36b35f8249b8acde5bd5d54864>
- <https://git.kernel.org/stable/c/50034d8d0f797c3a7a599f750a7d3e792e80dea5>
- <https://git.kernel.org/stable/c/feb0ed76601f3c2f91f08688c5a7d8b9d382f720>

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-93200>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-93200/>. Everything for agents: <https://agentprime.io/llms.txt>.