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CVE-2025-38110 is an out-of-bounds read/write vulnerability in the Linux kernel net/mdiobus subsystem. The Clause 45 MDIO ioctl handling path accepted an MDIO PHY address without verifying that it was within the kernel-supported range of 32 PHY addresses. A caller supplying an out-of-range address could cause an out-of-bounds access to the MDIO bus statistics array during a Clause 45 read or write operation. The upstream fix validates the MDIO address before executing the Clause 45 operation.
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A Linux kernel MDIO bus subsystem flaw permitting potential out-of-bounds Clause 45 read or write access.
A Linux kernel net/mdiobus vulnerability involving potential out-of-bounds Clause 45 read/write access.
A potential out-of-bounds access vulnerability in Linux kernel net/mdiobus Clause 45 read/write handling, addressed by the Red Hat Enterprise Linux 10 kernel update.
An out-of-bounds read/write vulnerability in the Linux kernel's net/mdiobus clause 45 (C45) ioctl handling. Insufficient validation of the MDIO address permits an address above the PHY_MAX_ADDR limit (32), potentially causing out-of-bounds access to the mdiobus statistics array.
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Cross-references every affected SKU, including bundled OEM variants.
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