Bluetooth: btintel_pcie: validate packet_len before skb_put_data (CVE-2026-97976) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-97976

Bluetooth: btintel_pcie: validate packet_len before skb_put_data

Answer in brief

CVE-2026-97976 records a Unknown severity vulnerability in Bluetooth: btintel_pcie: validate packet_len before skb_put_data. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 25, 2026Updated Sep 25, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 25, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=c2b636b3f788d10486a6691ad6dd3ec4c93bd78e <ab0159b1f7214ce9bad9862751e4553e635a21b1 \|\| >=c2b636b3f788d10486a6691ad6dd3ec4c93bd78e <73a50c636425cb9f7ab647b5a97bd14dd5610076 \|\| >=c2b636b3f788d10486a6691ad6dd3ec4c93bd78e <46884c0f92708f1d218fc94d88800227a19b52f8 \|\| >=c2b636b3f788d10486a6691ad6dd3ec4c93bd78e <6436e1b5331b1aebf905c13e0880a37032719b75	ab0159b1f7214ce9bad9862751e4553e635a21b1, 73a50c636425cb9f7ab647b5a97bd14dd5610076, 46884c0f92708f1d218fc94d88800227a19b52f8, 6436e1b5331b1aebf905c13e0880a37032719b75
Linux/Linuxgeneric	6.10	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to ab0159b1f7214ce9bad9862751e4553e635a21b1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source description

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().

Quoted source text, attributed separately from HOL analysis.