CVE-2023-1989
kernel: Use after free bug in btsdio_remove due to race condition
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · March 9, 2023
Updated · September 28, 2026
Description
A use-after-free flaw was found in btsdio_remove in drivers\bluetooth\btsdio.c in the Linux Kernel. A call to btsdio_remove with an unfinished job may cause a race problem which leads to a UAF on hdev devices.
Statement
Because successful exploitation of this flaw requires that a system supports SDIO hardware and that an attacker has control over attaching and detaching that hardware, Red Hat assesses the impact of this vulnerability as Moderate.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
This flaw can be mitigated by preventing the affected Generic Bluetooth SDIO driver kernel module from loading during the boot time. Ensure the module is added into the blacklist file.
Refer:
How do I blacklist a kernel module to prevent it from loading automatically?
https://access.redhat.com/solutions/41278
CVSS / CWE
CVSS 3.1 · 7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 · Use After Free