All vulnerabilities
CVE-2026-98291

Linux: Bluetooth: btintel_pcie: fix off-by-one bounds check in RX submit

Linux LinuxOperating systems
Open in ThreatlineRecord JSON
CVSS
NoneNot scored
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.18%Chance of exploitation activity in the next 30 days, higher than 6% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in18464860ce27af0dccd2fc72830610b85b518cffAlso 2ea5a87a5a7ae58cb2662b8a7d06f209383e1765CVE List
Published6 Oct 2026Updated 19 Oct 2026CVE List

What fixes it

  • 18464860ce27af0dccd2fc72830610b85b518cffLinuxCVE List
  • 2ea5a87a5a7ae58cb2662b8a7d06f209383e1765LinuxCVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: btintel_pcie: fix off-by-one bounds check in RX submit

btintel_pcie_submit_rx() used frbd_index > rxq->count to guard the FRBD array access, allowing frbd_index == rxq->count to pass through and index one element past the end of the array. Change the check to >= rxq->count so every out-of-range index is rejected.

This issue was reported by Claude Mythos.

Text from CVE List

Affected versions 10

  • Linuxaffected: c2b636b3f788d10486a6691ad6dd3ec4c93bd78e before b5214d72bfdf8ef7744d0c8147e6ebb09b36b259CVE List
  • Linuxaffected: c2b636b3f788d10486a6691ad6dd3ec4c93bd78e before 18464860ce27af0dccd2fc72830610b85b518cffCVE List
  • Linuxaffected: c2b636b3f788d10486a6691ad6dd3ec4c93bd78e before de4c3c72bcc6e8474f70c22427f94ca44bccd890CVE List
  • Linuxaffected: c2b636b3f788d10486a6691ad6dd3ec4c93bd78e before 2ea5a87a5a7ae58cb2662b8a7d06f209383e1765CVE List
  • Linuxaffected: 6.10CVE List
  • Linuxunaffected: all versions before 6.10CVE List
  • Linuxunaffected: 6.12.112 through 6.12.*CVE List
  • Linuxunaffected: 6.18.54 through 6.18.*CVE List
  • Linuxunaffected: 7.2.8 through 7.2.*CVE List
  • Linuxunaffected: 7.3CVE List

References 4