CVE-2025-71094: net: usb: asix: validate PHY address before use
Vulnerability summary
CVE-2025-71094 is a medium (CVSS 5.5) Improper Input Validation vulnerability in linux. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 3.1% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 45 · Related 42Timeline
- 13-01-2026PublishedVulnerability first disclosed.
- 19-10-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.14%
Chance of exploitation in the next 30 days
Percentile
3%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.13% on 04-10-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu144 products
- linux< 5.15.0-173.183 | < 6.8.0-110.110 | < 6.17.0-22.22
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.15.0-1103.110 | < 6.8.0-1052.55 | < 6.17.0-1012.12
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 7e88b11a862afe59ee0c365123ea5fb96a26cb3b, < fc96018f09f8d30586ca6582c5045a84eafef146 | ≥ 7e88b11a862afe59ee0c365123ea5fb96a26cb3b, < f5f4f30f3811d37e1aa48667c36add74e5a8d99f | ≥ 7e88b11a862afe59ee0c365123ea5fb96a26cb3b, < 38722e69ee64dbb020028c93898d25d6f4c0e0b2 | ≥ 7e88b11a862afe59ee0c365123ea5fb96a26cb3b, < 98a12c2547a44a5f03f35c108d2022cc652cbc4d | ≥ 7e88b11a862afe59ee0c365123ea5fb96a26cb3b, < bf8a0f3b787ca7c5889bfca12c60c483041fbee3 | ≥ 7e88b11a862afe59ee0c365123ea5fb96a26cb3b, < a1e077a3f76eea0dc671ed6792e7d543946227e8 | 4e4f3cb41d687bd64cd03358862b23c84d82329e | ≥ 5.13.13, < 5.14 | 5.14
- linux_kernelEOL≥ 5.13.13, < 5.14 | ≥ 5.14.1, < 5.15.198 | ≥ 5.16, < 6.1.160 | ≥ 6.2, < 6.6.120 | ≥ 6.7, < 6.12.64 | ≥ 6.13, < 6.18.4 | 5.14 | 6.19:rc1 | 6.19:rc2 | 6.19:rc3 | 6.19:rc4 | 6.19:rc5 | 6.19:rc6 | 6.19:rc7 | 6.19:rc8
Debian1 product
- linux< 6.1.162-1 | < 6.12.69-1 | < 6.18.5-1
3 vendors · 147 products