NULL pointer dereference in Linux kernel - CVE-2023-52833
Published: May 31, 2024 / Updated: May 14, 2025
Vulnerability identifier: #VU90452
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-52833
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the btusb_mtk_hci_wmt_sync() function in drivers/bluetooth/btusb.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/9f8e4d1a4ca1179aaeb43f91f3e2a386e7e616b3
- https://git.kernel.org/stable/c/f9de14bde56dcbb0765284c6dfc35842b021733c
- https://git.kernel.org/stable/c/a556f2ef556a04790f67f2fa272f1a77336d15a0
- https://git.kernel.org/stable/c/0048ddf045bddc4dacb3e783fd869a2f8fb5be30
- https://git.kernel.org/stable/c/13b1ebad4c175e6a9b0748acbf133c21a15d282a
- https://git.kernel.org/stable/c/624820f7c8826dd010e8b1963303c145f99816e9
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.202
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.140
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.64
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7