Use-after-free in Linux kernel - CVE-2026-97908
Published: September 28, 2026
Vulnerability identifier: #VU152576
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-97908
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to trigger a use-after-free condition.
The vulnerability exists due to use-after-free in the btqcomsmd Bluetooth driver when the command or ACL RPMsg endpoint receives data during device teardown. A remote attacker can trigger delivery of data from WCNSS during device teardown to cause an endpoint callback to dereference an already freed hci_dev.
Affected software
Linux kernel
How to mitigate CVE-2026-97908
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3