Answer in brief
CVE-2025-38110 records a High severity (CVSS 7.8) vulnerability in net/mdiobus: Fix potential out-of-bounds clause 45 read/write access. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). 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 7.8. 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). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=4e4aafcddbbfcdd6eed5780e190fcbfac8b4685a <abb0605ca00979a49572a6516f6db22c3dc57223 || >=4e4aafcddbbfcdd6eed5780e190fcbfac8b4685a <31bf7b2b92563a352788cf9df3698682f659bacc || >=4e4aafcddbbfcdd6eed5780e190fcbfac8b4685a <4ded22f7f3ce9714ed72c3e9c68fea1cb9388ae7 || >=4e4aafcddbbfcdd6eed5780e190fcbfac8b4685a <260388f79e94fb3026c419a208ece8358bb7b555 | abb0605ca00979a49572a6516f6db22c3dc57223, 31bf7b2b92563a352788cf9df3698682f659bacc, 4ded22f7f3ce9714ed72c3e9c68fea1cb9388ae7, 260388f79e94fb3026c419a208ece8358bb7b555 |
| Linux/Linuxgeneric | 6.3 | Not reported |
Published upstream
Jul 3, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: net/mdiobus: Fix potential out-of-bounds clause 45 read/write access When using publicly available tools like 'mdio-tools' to read/write data from/to network interface and its PHY via C45 (clause 45) mdiobus, there is no verification of parameters passed to the ioctl and it accepts any mdio address. Currently there is support for 32 addresses in kernel via PHY_MAX_ADDR define, but it is possible to pass higher value than that via ioctl. While read/write operation should generally fail in this case, mdiobus provides stats array, where wrong address may allow out-of-bounds read/write. Fix that by adding address verification before C45 read/write operation. While this excludes this access from any statistics, it improves security of read/write operation.
Quoted source text, attributed separately from HOL analysis.