VulnerabilityPublished 4 Sep 2025Updated 5 Nov 2026

CVE-2025-38693: Linux kernel · media: dvb-frontends: w7090p: fix null-ptr-deref in w7090p_tuner_write_serpar and

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in f98132a59ccc59a8b97987363bc99c8968934756 : update Linux kernel when convenient.

Data as of 5 Nov 2026, 21:34 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-05.

Patch

Available – fixed in f98132a59ccc59a8b97987363bc99c8968934756, ed0234c8458b3149f15e496b48a1c9874dd24a1b, b3d77a3fc71c084575d3df4ec6544b3fb6ce587d +6

Exploitation evidence

Disclosed: evidence found.
CVE published 4 Sep 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 713d54a8bd812229410a1902cd9b332a2a27af9f, < f98132a59ccc59a8b97987363bc99c8968934756	Fixed in f98132a59ccc59a8b97987363bc99c8968934756
LinuxLinux	Affected ≥ 713d54a8bd812229410a1902cd9b332a2a27af9f, < ed0234c8458b3149f15e496b48a1c9874dd24a1b	Fixed in ed0234c8458b3149f15e496b48a1c9874dd24a1b
LinuxLinux	Affected ≥ 713d54a8bd812229410a1902cd9b332a2a27af9f, < b3d77a3fc71c084575d3df4ec6544b3fb6ce587d	Fixed in b3d77a3fc71c084575d3df4ec6544b3fb6ce587d
LinuxLinux	Affected ≥ 713d54a8bd812229410a1902cd9b332a2a27af9f, < 99690a494d91a0dc86cebd628da4c62c40552bcb	Fixed in 99690a494d91a0dc86cebd628da4c62c40552bcb
LinuxLinux	Affected ≥ 713d54a8bd812229410a1902cd9b332a2a27af9f, < 454a443eaa792c8865c861a282fe6d4f596abc3a	Fixed in 454a443eaa792c8865c861a282fe6d4f596abc3a
LinuxLinux	Affected ≥ 713d54a8bd812229410a1902cd9b332a2a27af9f, < 39b06b93f24dff923c4183d564ed28c039150554	Fixed in 39b06b93f24dff923c4183d564ed28c039150554

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()")

References

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