NULL pointer dereference in Linux kernel - CVE-2023-52856
Published: May 31, 2024 / Updated: May 14, 2025
Vulnerability identifier: #VU90434
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-2023-52856
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 lt8912_bridge_detach() function in drivers/gpu/drm/bridge/lontium-lt8912b.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/42071feab712ba2a139b8928f7e0f8d3a6fc719e
- https://git.kernel.org/stable/c/7bf0cb8f40280a85034990dfe42be8ca8f80f37a
- https://git.kernel.org/stable/c/fcd9895e365474709844eeb31cfe53d912c3596e
- https://git.kernel.org/stable/c/b65e3249f3ca96e3c736af889461d80d675feab6
- https://git.kernel.org/stable/c/44283993144a03af9df31934d6c32bbd42d1a347
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.139
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.63
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.12
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7