{"id":"CVE-2026-97976","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btintel_pcie: validate packet_len before skb_put_data\n\nbtintel_pcie_submit_rx_work() reads packet_len from rfh_hdr without\nchecking if it exceeds the RX buff…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btintel_pcie: validate packet_len before skb_put_data\n\nbtintel_pcie_submit_rx_work() reads packet_len from rfh_hdr without\nchecking if it exceeds the RX buff…","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= c2b636b3f788d10486a6691ad6dd3ec4c93bd78e < ab0159b1f7214ce9bad9862751e4553e635a21b1","Linux >= c2b636b3f788d10486a6691ad6dd3ec4c93bd78e < 73a50c636425cb9f7ab647b5a97bd14dd5610076","Linux >= c2b636b3f788d10486a6691ad6dd3ec4c93bd78e < 46884c0f92708f1d218fc94d88800227a19b52f8","Linux >= c2b636b3f788d10486a6691ad6dd3ec4c93bd78e < 6436e1b5331b1aebf905c13e0880a37032719b75","Linux 6.10"],"published":"2026-09-25","updated":"2026-09-25","sourceUpdated":"2026-09-25T11:17:25.570","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-97976","references":[{"url":"https://git.kernel.org/stable/c/46884c0f92708f1d218fc94d88800227a19b52f8","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6436e1b5331b1aebf905c13e0880a37032719b75","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/73a50c636425cb9f7ab647b5a97bd14dd5610076","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ab0159b1f7214ce9bad9862751e4553e635a21b1","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97976.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-97976"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2541173"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-97976"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97976"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97976.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ingestedAt":"2026-09-25T11:06:38.870Z","epss":0.00168,"epssPercentile":0.06034,"cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-125"],"slug":"CVE-2026-97976","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btintel_pcie: validate packet_len before skb_put_data\n\nbtintel_pcie_submit_rx_work() reads packet_len from rfh_hdr without\nchecking if it exceeds the RX buffer size. An oversized packet_len\ncan lead to an out-of-bounds read in skb_put_data().\n\nValidate packet_len to ensure it is non-zero and does not exceed\nBTINTEL_PCIE_BUFFER_SIZE - sizeof(*rfh_hdr), logging an error when\ninvalid.\n\nThis issue was reported by Claude Mythos. It can be simulated either by\nusing customized firmware configured to return an invalid packet_len or\nby modifying rfh_hdr->packet_len in the driver before calling\nbtintel_pcie_submit_rx_work().\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97976.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":213317,"id":"CVE-2026-97976","ts":1790754689035,"field":"cvss","old":null,"new":"5.5"},{"seq":213316,"id":"CVE-2026-97976","ts":1790754689035,"field":"severity","old":"none","new":"medium"}]}