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: linux kernel
References5
- git.kernel.org/stable/c/1237c2d4a8db79dfd4369bff6930b0e385ed7d5c Patch
- git.kernel.org/stable/c/2dbccf1eb8c04b84ee3afdb1d6b787db02e7befc Patch
- git.kernel.org/stable/c/3fbe3f4c57fda09f32e13fa05f53a0cc6f500619 Patch
- git.kernel.org/stable/c/155bc8f94d52c01c0952acee8156f05f26d81ef6
- git.kernel.org/stable/c/3f87fe8ceaa775a5b0ed02802146c1f4743998fb
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 13 · as of 7 November 2026
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