# CVE-2026-98304: net: bcmgenet: restore the hardware filters on open

CVE-2026-98304 is fixed in linux on 1 platform by DEBIAN-CVE-2026-98304 (version 7.2.8-1), released October 6, 2026. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2026-98304
- Priority: Urgent
- CVSS: 9.8 (Critical)
- EPSS: 0.0017
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 6, 2026
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-98304

## Description

In the Linux kernel, the following vulnerability has been resolved:  net: bcmgenet: restore the hardware filters on open  bcmgenet_hfb_init() runs INIT_LIST_HEAD() on priv->rxnfc_list, which drops every rule off the list, and bcmgenet_open() calls it on each ifup. Every rule the user configured is silently lost:    # ethtool -N eth0 flow-type ether dst $MAC action 0   Added rule with ID 0   # ethtool -n eth0 | grep -c Filter:   1   # ip link set eth0 down && ip link set eth0 up   # ethtool -n eth0 | grep -c Filter:   0  Initialise the lists once at probe and restore the rules on open, as bcmgenet_resume() already does.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 7.2.8-1 | [DEBIAN-CVE-2026-98304](https://patchblox.com/security/data/fix/linux/debian-cve-2026-98304.md) | Oct 6, 2026 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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