SB2026092886 - Out-of-bounds write in Linux kernel bluetooth
Published: September 28, 2026 Updated: September 30, 2026
Security Bulletin ID
SB2026092886
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds write (CVE-ID: CVE-2026-98107)
CWE-ID: CWE-787 - Out-of-bounds write
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause an out-of-bounds write.
The vulnerability exists due to an out-of-bounds write in the L2CAP ECRED connection handling when connecting a sequence of L2CAP sockets with deferred and non-deferred channels. A local user can initiate the socket connection sequence to write a 16-bit SCID value past the SCID array.
Remediation
Install update from vendor's website.