Stack-based buffer overflow in Linux kernel - CVE-2026-98108
Published: September 28, 2026
Vulnerability identifier: #VU152350
CSH Severity: Medium
CVSS v4: 7.7 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-98108
CWE-ID: CWE-121
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause memory corruption.
The vulnerability exists due to a stack-based buffer overflow in the Bluetooth L2CAP deferred enhanced credit-based response handling when processing L2CAP LE connection requests. A remote attacker can send specially crafted L2CAP LE connection requests to cause memory corruption.
The issue involves deferred-setup channels and listening parent channels configured for extended flow control.
Affected software
Linux kernel
How to mitigate CVE-2026-98108
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3