# Bluetooth: RFCOMM: validate skb length in rfcomm_recv_frame

CVE record · `CVE-2026-93783`

- **Identifiers:** `CVE-2026-93783`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 24 Sept 2026
- **Updated:** 3 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 24 Sept 2026, 16:02 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: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before fb40eda15122f6b780228639c1ead6820340ff54` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 3829af5fab5a22405bf1e7d69068c2ec0fce46ca` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before b161eacd7fa4a2d765724b5504ac6cc388e48f80` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 30d1d9f3495463f7c026e4c553127f79b486fcd6` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 67dc3b40fae71b6b11c71e7ff69bac0758818c05` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before bbc310caa2b6bf5fe42896ba27da0fbc12e4ac51` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before b230e5bf501c5edaf2eb0991cb862ac142031d4b` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.12`
  - unaffected: `before 2.6.12` (semver)
  - unaffected: `5.10.271 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.222 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.189 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.158 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.111 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.53 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2 to *, inclusive` (original_commit_for_fix)
  - Other versions: affected

## 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:** 0.0017, the 6th percentile, on 12 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 24 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-93783](https://www.cve.org/CVERecord?id=CVE-2026-93783)
- [NVD: CVE-2026-93783](https://nvd.nist.gov/vuln/detail/CVE-2026-93783)

### References from the CNA

- <https://git.kernel.org/stable/c/fb40eda15122f6b780228639c1ead6820340ff54>
- <https://git.kernel.org/stable/c/3829af5fab5a22405bf1e7d69068c2ec0fce46ca>
- <https://git.kernel.org/stable/c/b161eacd7fa4a2d765724b5504ac6cc388e48f80>
- <https://git.kernel.org/stable/c/30d1d9f3495463f7c026e4c553127f79b486fcd6>
- <https://git.kernel.org/stable/c/67dc3b40fae71b6b11c71e7ff69bac0758818c05>
- <https://git.kernel.org/stable/c/bbc310caa2b6bf5fe42896ba27da0fbc12e4ac51>
- <https://git.kernel.org/stable/c/b230e5bf501c5edaf2eb0991cb862ac142031d4b>

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-2026-93783>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-93783/>. Everything for agents: <https://agentprime.io/llms.txt>.