CVE-2023-53220

MEDIUM EPSS 4.2%
Published Sep 15, 20259mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Sep 15, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago

Description

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()")

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
4.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 7

VendorProductVersionRange
linuxlinux_kernel* <4.14.326
linuxlinux_kernel*≥4.15  –  <4.19.295
linuxlinux_kernel*≥4.20  –  <5.4.257
linuxlinux_kernel*≥5.5  –  <5.10.197
linuxlinux_kernel*≥5.11  –  <5.15.133
linuxlinux_kernel*≥5.16  –  <6.1.55
linuxlinux_kernel*≥6.2  –  <6.5.5

References 8

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

Remediation

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