Bluetooth: btintel_pcie: validate packet_len before skb_put_data

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-97976
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-25 11:17:25 UTC
Updated2026-09-25 11:17:25 UTC
DescriptionIn 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().

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected c2b636b3f788d10486a6691ad6dd3ec4c93bd78e ab0159b1f7214ce9bad9862751e4553e635a21b1 git Not specified
CNA Linux Linux affected c2b636b3f788d10486a6691ad6dd3ec4c93bd78e 73a50c636425cb9f7ab647b5a97bd14dd5610076 git Not specified
CNA Linux Linux affected c2b636b3f788d10486a6691ad6dd3ec4c93bd78e 46884c0f92708f1d218fc94d88800227a19b52f8 git Not specified
CNA Linux Linux affected c2b636b3f788d10486a6691ad6dd3ec4c93bd78e 6436e1b5331b1aebf905c13e0880a37032719b75 git Not specified
CNA Linux Linux affected 6.10 Not specified
CNA Linux Linux unaffected 6.10 semver Not specified
CNA Linux Linux unaffected 6.12.111 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.53 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.7 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/46884c0f92708f1d218fc94d88800227a19b52f8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ab0159b1f7214ce9bad9862751e4553e635a21b1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6436e1b5331b1aebf905c13e0880a37032719b75 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/73a50c636425cb9f7ab647b5a97bd14dd5610076 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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