CVE-2026-97976

Summary

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().

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxc2b636b3f788d10486a6691ad6dd3ec4c93bd78e < ab0159b1f7214ce9bad9862751e4553e635a21b1affected
LinuxLinuxc2b636b3f788d10486a6691ad6dd3ec4c93bd78e < 73a50c636425cb9f7ab647b5a97bd14dd5610076affected
LinuxLinuxc2b636b3f788d10486a6691ad6dd3ec4c93bd78e < 46884c0f92708f1d218fc94d88800227a19b52f8affected
LinuxLinuxc2b636b3f788d10486a6691ad6dd3ec4c93bd78e < 6436e1b5331b1aebf905c13e0880a37032719b75affected
LinuxLinux6.10affected
LinuxLinux0 < 6.10unaffected
LinuxLinux6.12.111 <= 6.12.*unaffected
LinuxLinux6.18.53 <= 6.18.*unaffected
LinuxLinux7.2.7 <= 7.2.*unaffected
LinuxLinux7.3-rc3 <= *unaffected

Weaknesses

References