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VulnerabilityPublished Updated

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

Source GCVE Database

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Authoritative record:CVE-2025-38272· Medium

Not known to be exploited · CVSS 5.5 Medium · fixed in 1237c2d4a8db79dfd4369bff6930b0e385ed7d5c : update Linux kernel when convenient.

Data as of 30 Oct 2026, 16:33 UTC

CVSS 3.1 base score
5.5Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
Patch
Available – fixed in 1237c2d4a8db79dfd4369bff6930b0e385ed7d5c, 155bc8f94d52c01c0952acee8156f05f26d81ef6, 3fbe3f4c57fda09f32e13fa05f53a0cc6f500619 +2
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 10 Jul 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 22256b0afb12333571ad11799fa68fd27e4f4e80, < 1237c2d4a8db79dfd4369bff6930b0e385ed7d5c
Fixed in
  • 1237c2d4a8db79dfd4369bff6930b0e385ed7d5c
LinuxLinuxAffected
  • ≥ 22256b0afb12333571ad11799fa68fd27e4f4e80, < 155bc8f94d52c01c0952acee8156f05f26d81ef6
Fixed in
  • 155bc8f94d52c01c0952acee8156f05f26d81ef6
LinuxLinuxAffected
  • ≥ 22256b0afb12333571ad11799fa68fd27e4f4e80, < 3fbe3f4c57fda09f32e13fa05f53a0cc6f500619
Fixed in
  • 3fbe3f4c57fda09f32e13fa05f53a0cc6f500619
LinuxLinuxAffected
  • ≥ 22256b0afb12333571ad11799fa68fd27e4f4e80, < 3f87fe8ceaa775a5b0ed02802146c1f4743998fb
Fixed in
  • 3f87fe8ceaa775a5b0ed02802146c1f4743998fb
LinuxLinuxAffected
  • ≥ 22256b0afb12333571ad11799fa68fd27e4f4e80, < 2dbccf1eb8c04b84ee3afdb1d6b787db02e7befc
Fixed in
  • 2dbccf1eb8c04b84ee3afdb1d6b787db02e7befc
LinuxLinuxAffected
  • =4.15
Fixed in–

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.

References

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