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Unrated severityNVD Advisory· Published Mar 27, 2025· Updated Oct 1, 2025

net: phy: dp83822: Fix null pointer access on DP83825/DP83826 devices

CVE-2023-52984

Description

In the Linux kernel, the following vulnerability has been resolved:

net: phy: dp83822: Fix null pointer access on DP83825/DP83826 devices

The probe() function is only used for the DP83822 PHY, leaving the private data pointer uninitialized for the smaller DP83825/26 models. While all uses of the private data structure are hidden in 82822 specific callbacks, configuring the interrupt is shared across all models. This causes a NULL pointer dereference on the smaller PHYs as it accesses the private data unchecked. Verifying the pointer avoids that.

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Affected products

84

Patches

Vulnerability mechanics

References

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