Out-of-bounds write in Linux kernel - CVE-2026-98107
Published: September 28, 2026
Vulnerability identifier: #VU152349
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-98107
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Linux kernel
How to mitigate CVE-2026-98107
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3