VulnerabilityPublished 4 Sep 2025Updated 5 Nov 2026

CVE-2025-38725: Linux kernel · net: usb: asix_devices: add phy_mask for ax88772 mdio bus

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in ee2cd40b0bb46056949a2319084a729d95389386 : 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 ee2cd40b0bb46056949a2319084a729d95389386, ccef5ee4adf56472aa26bdd1f821a6d0cd06089a, ad1f8313aeec0115f9978bd2d002ef4a8d96c773 +4

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 ≥ e532a096be0e5e570b383e71d4560e7f04384e0f, < ee2cd40b0bb46056949a2319084a729d95389386	Fixed in ee2cd40b0bb46056949a2319084a729d95389386
LinuxLinux	Affected ≥ e532a096be0e5e570b383e71d4560e7f04384e0f, < ccef5ee4adf56472aa26bdd1f821a6d0cd06089a	Fixed in ccef5ee4adf56472aa26bdd1f821a6d0cd06089a
LinuxLinux	Affected ≥ e532a096be0e5e570b383e71d4560e7f04384e0f, < ad1f8313aeec0115f9978bd2d002ef4a8d96c773	Fixed in ad1f8313aeec0115f9978bd2d002ef4a8d96c773
LinuxLinux	Affected ≥ e532a096be0e5e570b383e71d4560e7f04384e0f, < a754ab53993b1585132e871c5d811167ad3c52ff	Fixed in a754ab53993b1585132e871c5d811167ad3c52ff
LinuxLinux	Affected ≥ e532a096be0e5e570b383e71d4560e7f04384e0f, < 75947d3200de98a9ded9ad8972e02f1a177097fe	Fixed in 75947d3200de98a9ded9ad8972e02f1a177097fe
LinuxLinux	Affected ≥ e532a096be0e5e570b383e71d4560e7f04384e0f, < 59ed6fbdb1bc03316e09493ffde7066f031c7524	Fixed in 59ed6fbdb1bc03316e09493ffde7066f031c7524

Description

In the Linux kernel, the following vulnerability has been resolved: net: usb: asix_devices: add phy_mask for ax88772 mdio bus Without setting phy_mask for ax88772 mdio bus, current driver may create at most 32 mdio phy devices with phy address range from 0x00 ~ 0x1f. DLink DUB-E100 H/W Ver B1 is such a device. However, only one main phy device will bind to net phy driver. This is creating issue during system suspend/resume since phy_polling_mode() in phy_state_machine() will directly deference member of phydev->drv for non-main phy devices. Then NULL pointer dereference issue will occur. Due to only external phy or internal phy is necessary, add phy_mask for ax88772 mdio bus to workarnoud the issue.

References

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