What’s Vulnerable › Vulnerabilities

CVE-2025-38272: net: dsa: b53: do not enable EEE on bcm63xx

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-07-10 · updated 2026-10-30

Description

In the Linux kernel, the following vulnerability has been resolved: net: dsa: b53: do not enable EEE on bcm63xx BCM63xx internal switches do not support EEE, but provide multiple RGMII ports where external PHYs may be connected. If one of these PHYs are EEE capable, we may try to enable EEE for the MACs, which then hangs the system on access of the (non-existent) EEE registers. Fix this by checking if the switch actually supports EEE before attempting to configure it.

Affected products

• Linux kernel: from 4.15 before 6.12.46; from 6.13 before 6.15.3 — fixed in 6.12.46, 6.15.3
• Linux: 4.15 — fixed in 6.16

How to fix

Upgrade to a fixed version: Linux kernel 6.12.46, 6.15.3; Linux 6.16. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1237c2d4a8db79dfd4369bff6930b0e385ed7d5c
• https://git.kernel.org/stable/c/155bc8f94d52c01c0952acee8156f05f26d81ef6
• https://git.kernel.org/stable/c/2dbccf1eb8c04b84ee3afdb1d6b787db02e7befc
• https://git.kernel.org/stable/c/3f87fe8ceaa775a5b0ed02802146c1f4743998fb
• https://git.kernel.org/stable/c/3fbe3f4c57fda09f32e13fa05f53a0cc6f500619

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