CVE-2025-71094: Linux kernel · net: usb: asix: validate PHY address before use
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in fc96018f09f8d30586ca6582c5045a84eafef146 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 14:18 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 3% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- CISA SSVC
- 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, 2026-06-10.
- Patch
- Available – fixed in fc96018f09f8d30586ca6582c5045a84eafef146, f5f4f30f3811d37e1aa48667c36add74e5a8d99f, bf8a0f3b787ca7c5889bfca12c60c483041fbee3 +4
Exploitation evidence
Disclosed: evidence found.
CVE published 13 Jan 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in– |
Description
In the Linux kernel, the following vulnerability has been resolved: net: usb: asix: validate PHY address before use The ASIX driver reads the PHY address from the USB device via asix_read_phy_addr(). A malicious or faulty device can return an invalid address (>= PHY_MAX_ADDR), which causes a warning in mdiobus_get_phy(): addr 207 out of range WARNING: drivers/net/phy/mdio_bus.c:76 Validate the PHY address in asix_read_phy_addr() and remove the now-redundant check in ax88172a.c.
References
- git.kernel.org/stable/c/fc96018f09f8d30586ca6582c5045a84eafef146 (opens in a new tab)
- git.kernel.org/stable/c/f5f4f30f3811d37e1aa48667c36add74e5a8d99f (opens in a new tab)
- git.kernel.org/stable/c/38722e69ee64dbb020028c93898d25d6f4c0e0b2 (opens in a new tab)
- git.kernel.org/stable/c/98a12c2547a44a5f03f35c108d2022cc652cbc4d (opens in a new tab)
- git.kernel.org/stable/c/bf8a0f3b787ca7c5889bfca12c60c483041fbee3 (opens in a new tab)
- git.kernel.org/stable/c/a1e077a3f76eea0dc671ed6792e7d543946227e8 (opens in a new tab)