Bug 2541173 (CVE-2026-97976) - CVE-2026-97976 kernel: Bluetooth: btintel_pcie: validate packet_len before skb_put_data
Summary: CVE-2026-97976 kernel: Bluetooth: btintel_pcie: validate packet_len before sk...
Keywords:
Status: NEW
Alias: CVE-2026-97976
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-25 10:54 UTC by OSIDB Bzimport
Modified: 2026-09-30 05:59 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:


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Description OSIDB Bzimport 2026-09-25 10:54:49 UTC
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().


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