NULL pointer dereference in Linux kernel - CVE-2023-52789
Published: May 31, 2024 / Updated: May 14, 2025
Vulnerability identifier: #VU90421
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-2023-52789
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 vcc_probe() and vcc_table_remove() functions in drivers/tty/vcc.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/38cd56fc9de78bf3c878790785e8c231116ef9d3
- https://git.kernel.org/stable/c/909963e0c16778cec28efb1affc21558825f4200
- https://git.kernel.org/stable/c/460284dfb10b207980c6f3f7046e33446ceb38ac
- https://git.kernel.org/stable/c/4ef41a7f33ffe1a335e7db7e1564ddc6afad47cc
- https://git.kernel.org/stable/c/6c80f48912b5bd4965352d1a9a989e21743a4a06
- https://git.kernel.org/stable/c/7cebc86481bf16049e266f6774d90f2fd4f8d5d2
- https://git.kernel.org/stable/c/4a24a31826246b15477399febd13292b0c9f0ee9
- https://git.kernel.org/stable/c/8f8771757b130383732195497e47fba2aba76d3a
- https://git.kernel.org/stable/c/d81ffb87aaa75f842cd7aa57091810353755b3e6
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.331
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.300
- 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/v5.x/ChangeLog-5.4.262
- 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