CVE-2023-53220

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2023-53220
In the Linux kernel, the following vulnerability has been resolved: media: az6007: Fix null-ptr-deref in az6007_i2c_xfer() In az6007_i2c_xfer, msg is controlled by user. When msg[i].buf is null and msg[i].len is zero, former checks on msg[i].buf would be passed. Malicious data finally reach az6007_i2c_xfer. If accessing msg[i].buf[0] without sanity check, null ptr deref would happen. We add check on msg[i].len to prevent crash. Similar commit: commit 0ed554fd769a ("media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()")

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/1047f9343011f2cedc73c64829686206a7e9fc3f Patch
https://git.kernel.org/stable/c/5b1ea100ad3695025969dc4693f307877fb688d6 Patch
https://git.kernel.org/stable/c/6ab7ea4e17d6a605d05308adf8f3408924770cba Patch
https://git.kernel.org/stable/c/991c77fe18c6f374bbf83376f8c42550aa565662 Patch
https://git.kernel.org/stable/c/a1110f19d4940e4185251d072cbb0ff51486a1e7 Patch
https://git.kernel.org/stable/c/a9def3e9718a4dc756f48db147d42ec41a966240 Patch
https://git.kernel.org/stable/c/adcb73f8ce9aec48b1f85223f401c1574015d8d2 Patch
https://git.kernel.org/stable/c/c6763fefa267f6e62595a6ac1f57815d99fc90b7 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

03 Dec 2025, 15:29

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CWE CWE-476
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
First Time Linux
Linux linux Kernel
References () https://git.kernel.org/stable/c/1047f9343011f2cedc73c64829686206a7e9fc3f - () https://git.kernel.org/stable/c/1047f9343011f2cedc73c64829686206a7e9fc3f - Patch
References () https://git.kernel.org/stable/c/5b1ea100ad3695025969dc4693f307877fb688d6 - () https://git.kernel.org/stable/c/5b1ea100ad3695025969dc4693f307877fb688d6 - Patch
References () https://git.kernel.org/stable/c/6ab7ea4e17d6a605d05308adf8f3408924770cba - () https://git.kernel.org/stable/c/6ab7ea4e17d6a605d05308adf8f3408924770cba - Patch
References () https://git.kernel.org/stable/c/991c77fe18c6f374bbf83376f8c42550aa565662 - () https://git.kernel.org/stable/c/991c77fe18c6f374bbf83376f8c42550aa565662 - Patch
References () https://git.kernel.org/stable/c/a1110f19d4940e4185251d072cbb0ff51486a1e7 - () https://git.kernel.org/stable/c/a1110f19d4940e4185251d072cbb0ff51486a1e7 - Patch
References () https://git.kernel.org/stable/c/a9def3e9718a4dc756f48db147d42ec41a966240 - () https://git.kernel.org/stable/c/a9def3e9718a4dc756f48db147d42ec41a966240 - Patch
References () https://git.kernel.org/stable/c/adcb73f8ce9aec48b1f85223f401c1574015d8d2 - () https://git.kernel.org/stable/c/adcb73f8ce9aec48b1f85223f401c1574015d8d2 - Patch
References () https://git.kernel.org/stable/c/c6763fefa267f6e62595a6ac1f57815d99fc90b7 - () https://git.kernel.org/stable/c/c6763fefa267f6e62595a6ac1f57815d99fc90b7 - Patch
Information

Published : 2025-09-15 15:15

Updated : 2025-12-03 15:29

NVD link : CVE-2023-53220

Mitre link : CVE-2023-53220

CVE.ORG link : CVE-2023-53220

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference