Skip to main content
VulnerabilityPublished Updated

CVE-2026-64125: Linux kernel · net: bcmgenet: keep RBUF EEE/PM disabled

Affects Linux kernelSource GCVE Database

0
Authoritative record:CVE-2026-64125· Critical 9.8

Not known to be exploited · CVSS 9.8 Critical · fixed in f2782ddac82c70df313012da5f71f1f06b5553ca : patch Linux kernel as a priority.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 45% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in f2782ddac82c70df313012da5f71f1f06b5553ca, b579f3a73da7a7e74213558f4cc3d865c30aaa78, a212fc08f5c48a16a94092bf0a9a8b7cf4483b11 +5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 19 Jul 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 6ef398ea60d931b97d69ed080bd0bd00fac38ec6, < f2782ddac82c70df313012da5f71f1f06b5553ca
Fixed in
  • f2782ddac82c70df313012da5f71f1f06b5553ca
LinuxLinuxAffected
  • ≥ 6ef398ea60d931b97d69ed080bd0bd00fac38ec6, < b579f3a73da7a7e74213558f4cc3d865c30aaa78
Fixed in
  • b579f3a73da7a7e74213558f4cc3d865c30aaa78
LinuxLinuxAffected
  • ≥ 6ef398ea60d931b97d69ed080bd0bd00fac38ec6, < a212fc08f5c48a16a94092bf0a9a8b7cf4483b11
Fixed in
  • a212fc08f5c48a16a94092bf0a9a8b7cf4483b11
LinuxLinuxAffected
  • ≥ 6ef398ea60d931b97d69ed080bd0bd00fac38ec6, < 289499907399c5a9f2ed82cb34df49112bb8488f
Fixed in
  • 289499907399c5a9f2ed82cb34df49112bb8488f
LinuxLinuxAffected
  • ≥ 6ef398ea60d931b97d69ed080bd0bd00fac38ec6, < 2040eb83f6ada148fb32dd98b943a498005d79f2
Fixed in
  • 2040eb83f6ada148fb32dd98b943a498005d79f2
LinuxLinuxAffected
  • ≥ 6ef398ea60d931b97d69ed080bd0bd00fac38ec6, < 49bdf6bbb21b9c6e3f4d0c1910bf0ef98424be95
Fixed in
  • 49bdf6bbb21b9c6e3f4d0c1910bf0ef98424be95

AI-suggested

A patch is available and should be applied to affected Linux kernel versions. The vendor advisory from Ubuntu confirms that updating to the fixed linux-aws kernel versions resolves the issue. After updating, a system reboot is required to apply the fix. Due to ABI changes, third-party kernel modules may need recompilation and reinstallation. No additional mitigations are required beyond applying the official kernel updates.

Description

A vulnerability in the Linux kernel's bcmgenet network driver was resolved, where enabling certain energy-efficient Ethernet (EEE) and power management (PM) features caused the RX path on GENET hardware to break, stopping RX traffic despite the link remaining up. This issue was reproducible on specific hardware including Raspberry Pi 4B and certain Broadcom boards. The vulnerability could lead to denial of service or system instability due to RX packet loss and potential kernel crashes. The issue is addressed by disabling RBUF EEE/PM features. Multiple Linux kernel security issues were fixed in the same update, with patches available for affected versions.

References

Community reviews

Loading reviews…