CVE-2026-97976 PUBLISHED

Bluetooth: btintel_pcie: validate packet_len before skb_put_data

Assigner: Linux
Reserved: 25.09.2026 Published: 25.09.2026 Updated: 25.09.2026

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: btintel_pcie: validate packet_len before skb_put_data

btintel_pcie_submit_rx_work() reads packet_len from rfh_hdr without checking if it exceeds the RX buffer size. An oversized packet_len can lead to an out-of-bounds read in skb_put_data().

Validate packet_len to ensure it is non-zero and does not exceed BTINTEL_PCIE_BUFFER_SIZE - sizeof(*rfh_hdr), logging an error when invalid.

This issue was reported by Claude Mythos. It can be simulated either by using customized firmware configured to return an invalid packet_len or by modifying rfh_hdr->packet_len in the driver before calling btintel_pcie_submit_rx_work().

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from c2b636b3f788d10486a6691ad6dd3ec4c93bd78e to ab0159b1f7214ce9bad9862751e4553e635a21b1 (excl.)
  • affected from c2b636b3f788d10486a6691ad6dd3ec4c93bd78e to 73a50c636425cb9f7ab647b5a97bd14dd5610076 (excl.)
  • affected from c2b636b3f788d10486a6691ad6dd3ec4c93bd78e to 46884c0f92708f1d218fc94d88800227a19b52f8 (excl.)
  • affected from c2b636b3f788d10486a6691ad6dd3ec4c93bd78e to 6436e1b5331b1aebf905c13e0880a37032719b75 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.10 is affected
  • unaffected from 0 to 6.10 (excl.)
  • unaffected from 6.12.111 to 6.12.* (incl.)
  • unaffected from 6.18.53 to 6.18.* (incl.)
  • unaffected from 7.2.7 to 7.2.* (incl.)
  • unaffected from 7.3-rc3 to * (incl.)

References