# Bluetooth: l2cap: clear chan->ident on ECRED reconfiguration success

CVE record · `CVE-2026-63976`

- **Identifiers:** `CVE-2026-63976`
- **State:** Confirmed
- **Severity:** CVSS 8.8 High
- **Critical:** No
- **CNA:** Linux
- **Weakness (CWE):** [CWE-694](https://cwe.mitre.org/data/definitions/694.html)
- **Tags:** [CWE-694](https://agentprime.io/advisories/tag/cwe-694.md)
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 19 Jul 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 19 Jul 2026, 14:56 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: `15f02b91056253e8cdc592888f431da0731337b8 to before 59f5ecf6ad5c4db6ae81965a96156954a3b0d89a` (git)
  - affected: `15f02b91056253e8cdc592888f431da0731337b8 to before ae0152d77d101c920769934fb102b18de0c6f526` (git)
  - affected: `15f02b91056253e8cdc592888f431da0731337b8 to before c2afd2613fda90107c5e2fe8e855627451749c78` (git)
  - affected: `15f02b91056253e8cdc592888f431da0731337b8 to before cc2b4f749de09975bfa06e58bbbad2f6acd4c79c` (git)
  - affected: `15f02b91056253e8cdc592888f431da0731337b8 to before 3b5b5f423b4fd23404a393bda8adba3cd6f74ef1` (git)
  - affected: `15f02b91056253e8cdc592888f431da0731337b8 to before f39049304ba655ffcbb92edbdf8c51a1f1210bed` (git)
  - affected: `15f02b91056253e8cdc592888f431da0731337b8 to before 8e7977afaef37c6bd2b2654f1bce6ab40d471147` (git)
  - affected: `15f02b91056253e8cdc592888f431da0731337b8 to before 00e1950716c6ed67d74777b2db286b0fa23b4be9` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.7`
  - unaffected: `before 5.7` (semver)
  - unaffected: `5.10.259 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.210 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.176 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.143 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.93 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.35 to 6.18.*, inclusive` (semver)
  - unaffected: `7.0.12 to 7.0.*, inclusive` (semver)
  - unaffected: `7.1 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

- 8.8 High, CVSS 3.1: `CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`, from CNA (Linux)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0057, the 47th percentile, on 5 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 19 Jul 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-63976](https://www.cve.org/CVERecord?id=CVE-2026-63976)
- [NVD: CVE-2026-63976](https://nvd.nist.gov/vuln/detail/CVE-2026-63976)

### References from the CNA

- <https://git.kernel.org/stable/c/59f5ecf6ad5c4db6ae81965a96156954a3b0d89a>
- <https://git.kernel.org/stable/c/ae0152d77d101c920769934fb102b18de0c6f526>
- <https://git.kernel.org/stable/c/c2afd2613fda90107c5e2fe8e855627451749c78>
- <https://git.kernel.org/stable/c/cc2b4f749de09975bfa06e58bbbad2f6acd4c79c>
- <https://git.kernel.org/stable/c/3b5b5f423b4fd23404a393bda8adba3cd6f74ef1>
- <https://git.kernel.org/stable/c/f39049304ba655ffcbb92edbdf8c51a1f1210bed>
- <https://git.kernel.org/stable/c/8e7977afaef37c6bd2b2654f1bce6ab40d471147>
- <https://git.kernel.org/stable/c/00e1950716c6ed67d74777b2db286b0fa23b4be9>

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-2026-63976>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-63976/>. Everything for agents: <https://agentprime.io/llms.txt>.