#VU115431 NULL pointer dereference in Linux kernel - CVE-2023-53220
Published: September 16, 2025 / Updated: September 22, 2025
Vulnerability identifier: #VU115431
Vulnerability risk: 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-2023-53220
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 az6007_i2c_xfer() function in drivers/media/usb/dvb-usb-v2/az6007.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/1047f9343011f2cedc73c64829686206a7e9fc3f
- https://git.kernel.org/stable/c/5b1ea100ad3695025969dc4693f307877fb688d6
- https://git.kernel.org/stable/c/6ab7ea4e17d6a605d05308adf8f3408924770cba
- https://git.kernel.org/stable/c/991c77fe18c6f374bbf83376f8c42550aa565662
- https://git.kernel.org/stable/c/a1110f19d4940e4185251d072cbb0ff51486a1e7
- https://git.kernel.org/stable/c/a9def3e9718a4dc756f48db147d42ec41a966240
- https://git.kernel.org/stable/c/adcb73f8ce9aec48b1f85223f401c1574015d8d2
- https://git.kernel.org/stable/c/c6763fefa267f6e62595a6ac1f57815d99fc90b7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.326