CVE-2025-38693
media: dvb-frontends: w7090p: fix null-ptr-deref in w7090p_tuner_write_serpar and w7090p_tuner_read_serpar
Description
In the Linux kernel, the following vulnerability has been resolved: media: dvb-frontends: w7090p: fix null-ptr-deref in w7090p_tuner_write_serpar and w7090p_tuner_read_serpar In w7090p_tuner_write_serpar, msg is controlled by user. When msg[0].buf is null and msg[0].len is zero, former checks on msg[0].buf would be passed. If accessing msg[0].buf[2] without sanity check, null pointer deref would happen. We add check on msg[0].len to prevent crash. Similar commit: commit 0ed554fd769a ("media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()")
INFO
Published Date :
Sept. 4, 2025, 4:15 p.m.
Last Modified :
Sept. 5, 2025, 5:47 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Update to a patched Linux kernel version.
- Apply the provided kernel patch.
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-2025-38693.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-38693 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-2025-38693
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-2025-38693 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-38693 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. 04, 2025
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: media: dvb-frontends: w7090p: fix null-ptr-deref in w7090p_tuner_write_serpar and w7090p_tuner_read_serpar In w7090p_tuner_write_serpar, msg is controlled by user. When msg[0].buf is null and msg[0].len is zero, former checks on msg[0].buf would be passed. If accessing msg[0].buf[2] without sanity check, null pointer deref would happen. We add check on msg[0].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/17b30e5ded062bd74f8ca6f317e1d415a8680665 Added Reference https://git.kernel.org/stable/c/39b06b93f24dff923c4183d564ed28c039150554 Added Reference https://git.kernel.org/stable/c/454a443eaa792c8865c861a282fe6d4f596abc3a Added Reference https://git.kernel.org/stable/c/6bbaec6a036940e22318f0454b50b8000845ab59 Added Reference https://git.kernel.org/stable/c/7a41ecfc3415ebe3b4c44f96b3337691dcf431a3 Added Reference https://git.kernel.org/stable/c/99690a494d91a0dc86cebd628da4c62c40552bcb Added Reference https://git.kernel.org/stable/c/b3d77a3fc71c084575d3df4ec6544b3fb6ce587d Added Reference https://git.kernel.org/stable/c/ed0234c8458b3149f15e496b48a1c9874dd24a1b Added Reference https://git.kernel.org/stable/c/f98132a59ccc59a8b97987363bc99c8968934756