# Bluetooth: hci_sync: free the advertising instance on the failure and cancel paths

CVE record · `CVE-2026-90254`

- **Identifiers:** `CVE-2026-90254`
- **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:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 17 Sept 2026, 16:07 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: `c249ea9b4309cf3250c5bbb42a05d38d0ed9071c to before c2019224a766245b7db39d87fdfe84c3fdc879d9` (git)
  - affected: `c249ea9b4309cf3250c5bbb42a05d38d0ed9071c to before 193182c6467f508a8a61d5db506d796ffed6eee6` (git)
  - affected: `c249ea9b4309cf3250c5bbb42a05d38d0ed9071c to before 2e3d827cd56865c14f6ca118bbccd7801091fb21` (git)
  - affected: `c249ea9b4309cf3250c5bbb42a05d38d0ed9071c to before 9c3b6c1413bd0b4993642d987616331f84d9b7f5` (git)
  - affected: `c249ea9b4309cf3250c5bbb42a05d38d0ed9071c to before bb5ca1cc7744c41c59002bd6523714a685ae6595` (git)
  - affected: `c249ea9b4309cf3250c5bbb42a05d38d0ed9071c to before 120d8dc042e3d45073bb6e50ee7b058a0b182627` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.1`
  - unaffected: `before 6.1` (semver)
  - unaffected: `6.1.188 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.157 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.110 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

## 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:** 0.0021, the 10th 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-2026-90254](https://www.cve.org/CVERecord?id=CVE-2026-90254)
- [NVD: CVE-2026-90254](https://nvd.nist.gov/vuln/detail/CVE-2026-90254)

### References from the CNA

- <https://git.kernel.org/stable/c/c2019224a766245b7db39d87fdfe84c3fdc879d9>
- <https://git.kernel.org/stable/c/193182c6467f508a8a61d5db506d796ffed6eee6>
- <https://git.kernel.org/stable/c/2e3d827cd56865c14f6ca118bbccd7801091fb21>
- <https://git.kernel.org/stable/c/9c3b6c1413bd0b4993642d987616331f84d9b7f5>
- <https://git.kernel.org/stable/c/bb5ca1cc7744c41c59002bd6523714a685ae6595>
- <https://git.kernel.org/stable/c/120d8dc042e3d45073bb6e50ee7b058a0b182627>

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-2026-90254>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90254/>. Everything for agents: <https://agentprime.io/llms.txt>.