CVE-2023-53220
media: az6007: Fix null-ptr-deref in az6007_i2c_xfer()
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()")
INFO
Published Date :
Sept. 15, 2025, 3:15 p.m.
Last Modified :
Sept. 15, 2025, 3:22 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2023-53220
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update the Linux kernel to the latest stable version.
- Apply the provided patch for the az6007 driver.
- Recompile and install the modified kernel.
- Reboot the system to load the new kernel.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-53220.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-53220 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-53220
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-53220 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-53220 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 15, 2025
Action Type Old Value New Value Added 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()") Added Reference https://git.kernel.org/stable/c/1047f9343011f2cedc73c64829686206a7e9fc3f Added Reference https://git.kernel.org/stable/c/5b1ea100ad3695025969dc4693f307877fb688d6 Added Reference https://git.kernel.org/stable/c/6ab7ea4e17d6a605d05308adf8f3408924770cba Added Reference https://git.kernel.org/stable/c/991c77fe18c6f374bbf83376f8c42550aa565662 Added Reference https://git.kernel.org/stable/c/a1110f19d4940e4185251d072cbb0ff51486a1e7 Added Reference https://git.kernel.org/stable/c/a9def3e9718a4dc756f48db147d42ec41a966240 Added Reference https://git.kernel.org/stable/c/adcb73f8ce9aec48b1f85223f401c1574015d8d2 Added Reference https://git.kernel.org/stable/c/c6763fefa267f6e62595a6ac1f57815d99fc90b7