Answer in brief
CVE-2025-38736 records a High severity (CVSS 7.1) vulnerability in net: usb: asix_devices: Fix PHY address mask in MDIO bus initialization. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC CN 4100 (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2025-38736 records a High severity (CVSS 7.1) vulnerability in net: usb: asix_devices: Fix PHY address mask in MDIO bus initialization. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC CN 4100 (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC CN 4100 (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=75947d3200de98a9ded9ad8972e02f1a177097fe <fcb4ce9f729c1d08e53abf9d449340e24c3edee6 || >=59ed6fbdb1bc03316e09493ffde7066f031c7524 <8f141f2a4f2ef8ca865d5921574c3d6535e00a49 || >=ccef5ee4adf56472aa26bdd1f821a6d0cd06089a <748da80831221ae24b4bc8d7ffb22acd5712a341 || >=ee2cd40b0bb46056949a2319084a729d95389386 <22042ffedd8c2c6db08ccdd6d4273068eddd3c5c || >=ad1f8313aeec0115f9978bd2d002ef4a8d96c773 <523eab02fce458fa6d3c51de5bb055800986953e || >=4faff70959d51078f9ee8372f8cff0d7045e4114 <24ef2f53c07f273bad99173e27ee88d44d135b1c || a754ab53993b1585132e871c5d811167ad3c52ff || >=6.15.11 <6.16 | fcb4ce9f729c1d08e53abf9d449340e24c3edee6, 8f141f2a4f2ef8ca865d5921574c3d6535e00a49, 748da80831221ae24b4bc8d7ffb22acd5712a341, 22042ffedd8c2c6db08ccdd6d4273068eddd3c5c, 523eab02fce458fa6d3c51de5bb055800986953e, 24ef2f53c07f273bad99173e27ee88d44d135b1c, 6.16 |
| Linux/Linuxgeneric | >=6.12.43 <6.12.44 || >=6.16.2 <6.16.4 | 6.12.44, 6.16.4 |
| Siemens/SIMATIC CN 4100generic | >=0 <V5.0 | V5.0 |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
Published upstream
Sep 5, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 14, 2026
In the Linux kernel, the following vulnerability has been resolved: net: usb: asix_devices: Fix PHY address mask in MDIO bus initialization Syzbot reported shift-out-of-bounds exception on MDIO bus initialization. The PHY address should be masked to 5 bits (0-31). Without this mask, invalid PHY addresses could be used, potentially causing issues with MDIO bus operations. Fix this by masking the PHY address with 0x1f (31 decimal) to ensure it stays within the valid range.
Quoted source text, attributed separately from HOL analysis.
CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC CN 4100 (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=75947d3200de98a9ded9ad8972e02f1a177097fe <fcb4ce9f729c1d08e53abf9d449340e24c3edee6 || >=59ed6fbdb1bc03316e09493ffde7066f031c7524 <8f141f2a4f2ef8ca865d5921574c3d6535e00a49 || >=ccef5ee4adf56472aa26bdd1f821a6d0cd06089a <748da80831221ae24b4bc8d7ffb22acd5712a341 || >=ee2cd40b0bb46056949a2319084a729d95389386 <22042ffedd8c2c6db08ccdd6d4273068eddd3c5c || >=ad1f8313aeec0115f9978bd2d002ef4a8d96c773 <523eab02fce458fa6d3c51de5bb055800986953e || >=4faff70959d51078f9ee8372f8cff0d7045e4114 <24ef2f53c07f273bad99173e27ee88d44d135b1c || a754ab53993b1585132e871c5d811167ad3c52ff || >=6.15.11 <6.16 | fcb4ce9f729c1d08e53abf9d449340e24c3edee6, 8f141f2a4f2ef8ca865d5921574c3d6535e00a49, 748da80831221ae24b4bc8d7ffb22acd5712a341, 22042ffedd8c2c6db08ccdd6d4273068eddd3c5c, 523eab02fce458fa6d3c51de5bb055800986953e, 24ef2f53c07f273bad99173e27ee88d44d135b1c, 6.16 |
| Linux/Linuxgeneric | >=6.12.43 <6.12.44 || >=6.16.2 <6.16.4 | 6.12.44, 6.16.4 |
| Siemens/SIMATIC CN 4100generic | >=0 <V5.0 | V5.0 |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
Published upstream
Sep 5, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 14, 2026
In the Linux kernel, the following vulnerability has been resolved: net: usb: asix_devices: Fix PHY address mask in MDIO bus initialization Syzbot reported shift-out-of-bounds exception on MDIO bus initialization. The PHY address should be masked to 5 bits (0-31). Without this mask, invalid PHY addresses could be used, potentially causing issues with MDIO bus operations. Fix this by masking the PHY address with 0x1f (31 decimal) to ensure it stays within the valid range.
Quoted source text, attributed separately from HOL analysis.