SB2026100776 - Off-by-one in Linux kernel bluetooth driver
Published: October 7, 2026
Security Bulletin ID
SB2026100776
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Off-by-one (CVE-ID: CVE-2026-98291)
CWE-ID: CWE-193 - Off-by-one Error
CVSSv4: 0 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause an out-of-bounds access to the FRBD array.
The vulnerability exists due to an off-by-one bounds check in btintel_pcie_submit_rx() when submitting receive buffers. A local user can trigger RX submission with an FRBD index equal to the RX queue count to cause an out-of-bounds access to the FRBD array.
Remediation
Install update from vendor's website.