{"id":"CVE-2026-64125","revision":"de652e77eaa142a6a424111735455300","records":[{"revision":"de652e77eaa142a6a424111735455300","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-64125","aliases":[],"title":"net: bcmgenet: keep RBUF EEE/PM disabled","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: bcmgenet: keep RBUF EEE/PM disabled\n\nSetting RBUF_EEE_EN | RBUF_PM_EN in RBUF_ENERGY_CTRL breaks the RX\npath on GENET hardware once MAC EEE becomes active. RX traffic stops\nflowing while the link stays up and the usual descriptor/RX error\ncounters remain quiet. In that state the MAC still accepts frames\n(rbuf_ovflow_cnt keeps climbing) but RBUF no longer forwards them to\nDMA, so rx_packets is no longer incremented at the netdev level. On\nsome boards the corruption ends up as a paging fault in\nskb_release_data via bcmgenet_rx_poll on an LPI exit.\n\nReproduced on Pi 4B (BCM2711 + BCM54213PE) and confirmed by Florian\nFainelli on an internal Broadcom 4908-family board with the same crash\nsignature. RBUF_PM_EN is not publicly documented.\n\nThis shows up more often now that phy_support_eee() enables EEE by\ndefault, but it also affects older kernels as soon as TX LPI is\nturned on via ethtool, so it is not specific to recent changes.\n\nAlways clear RBUF_EEE_EN | RBUF_PM_EN in bcmgenet_eee_enable_set so\nthe bits stay off across resets. UMAC and TBUF setup is left alone so\nTX-side EEE keeps working.","state":0,"publishedAt":"2026-07-19T15:40:22.59+00:00","modifiedAt":"2026-10-19T20:28:13.405+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/ethernet/broadcom/genet/bcmgenet.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6ef398ea60d931b97d69ed080bd0bd00fac38ec6\",\n                            \"lessThan\": \"2040eb83f6ada148fb32dd98b943a498005d79f2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6ef398ea60d931b97d69ed080bd0bd00fac38ec6\",\n                            \"lessThan\": \"f2782ddac82c70df313012da5f71f1f06b5553ca\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6ef398ea60d931b97d69ed080bd0bd00fac38ec6\",\n                            \"lessThan\": \"b579f3a73da7a7e74213558f4cc3d865c30aaa78\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6ef398ea60d931b97d69ed080bd0bd00fac38ec6\",\n                            \"lessThan\": \"289499907399c5a9f2ed82cb34df49112bb8488f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6ef398ea60d931b97d69ed080bd0bd00fac38ec6\",\n                            \"lessThan\": \"a212fc08f5c48a16a94092bf0a9a8b7cf4483b11\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6ef398ea60d931b97d69ed080bd0bd00fac38ec6\",\n                            \"lessThan\": \"3d4ef05266ab16d8ef7dd21658a557801eb78704\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6ef398ea60d931b97d69ed080bd0bd00fac38ec6\",\n                            \"lessThan\": \"49bdf6bbb21b9c6e3f4d0c1910bf0ef98424be95\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6ef398ea60d931b97d69ed080bd0bd00fac38ec6\",\n                            \"lessThan\": \"9a1730245e416d11ad5c0f2c100061d61cc43f60\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/ethernet/broadcom/genet/bcmgenet.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.19\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.19\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.258\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.209\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.175\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.142\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.92\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.34\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0.11\",\n                            \"lessThanOrEqual\": \"7.0.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/2040eb83f6ada148fb32dd98b943a498005d79f2","https://git.kernel.org/stable/c/f2782ddac82c70df313012da5f71f1f06b5553ca","https://git.kernel.org/stable/c/b579f3a73da7a7e74213558f4cc3d865c30aaa78","https://git.kernel.org/stable/c/289499907399c5a9f2ed82cb34df49112bb8488f","https://git.kernel.org/stable/c/a212fc08f5c48a16a94092bf0a9a8b7cf4483b11","https://git.kernel.org/stable/c/3d4ef05266ab16d8ef7dd21658a557801eb78704","https://git.kernel.org/stable/c/49bdf6bbb21b9c6e3f4d0c1910bf0ef98424be95","https://git.kernel.org/stable/c/9a1730245e416d11ad5c0f2c100061d61cc43f60"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64125","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-64125","identifiers":["CVE-2026-64125"]},"retained":false,"historicalAffected":[]}],"coverage":[]}