{"api_version":"1","generated_at":"2026-07-20T14:43:28+00:00","cve":"CVE-2026-64125","urls":{"html":"https://cve.report/CVE-2026-64125","api":"https://cve.report/api/cve/CVE-2026-64125.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64125","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64125"},"summary":{"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":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 16:17:54","updated_at":"2026-07-19 16:17:54"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/f2782ddac82c70df313012da5f71f1f06b5553ca","name":"https://git.kernel.org/stable/c/f2782ddac82c70df313012da5f71f1f06b5553ca","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9a1730245e416d11ad5c0f2c100061d61cc43f60","name":"https://git.kernel.org/stable/c/9a1730245e416d11ad5c0f2c100061d61cc43f60","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a212fc08f5c48a16a94092bf0a9a8b7cf4483b11","name":"https://git.kernel.org/stable/c/a212fc08f5c48a16a94092bf0a9a8b7cf4483b11","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b579f3a73da7a7e74213558f4cc3d865c30aaa78","name":"https://git.kernel.org/stable/c/b579f3a73da7a7e74213558f4cc3d865c30aaa78","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/289499907399c5a9f2ed82cb34df49112bb8488f","name":"https://git.kernel.org/stable/c/289499907399c5a9f2ed82cb34df49112bb8488f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/49bdf6bbb21b9c6e3f4d0c1910bf0ef98424be95","name":"https://git.kernel.org/stable/c/49bdf6bbb21b9c6e3f4d0c1910bf0ef98424be95","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2040eb83f6ada148fb32dd98b943a498005d79f2","name":"https://git.kernel.org/stable/c/2040eb83f6ada148fb32dd98b943a498005d79f2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3d4ef05266ab16d8ef7dd21658a557801eb78704","name":"https://git.kernel.org/stable/c/3d4ef05266ab16d8ef7dd21658a557801eb78704","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64125","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64125","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6ef398ea60d931b97d69ed080bd0bd00fac38ec6 2040eb83f6ada148fb32dd98b943a498005d79f2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6ef398ea60d931b97d69ed080bd0bd00fac38ec6 f2782ddac82c70df313012da5f71f1f06b5553ca git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6ef398ea60d931b97d69ed080bd0bd00fac38ec6 b579f3a73da7a7e74213558f4cc3d865c30aaa78 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6ef398ea60d931b97d69ed080bd0bd00fac38ec6 289499907399c5a9f2ed82cb34df49112bb8488f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.209 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.175 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.142 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.92 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.34 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.11 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/ethernet/broadcom/genet/bcmgenet.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"2040eb83f6ada148fb32dd98b943a498005d79f2","status":"affected","version":"6ef398ea60d931b97d69ed080bd0bd00fac38ec6","versionType":"git"},{"lessThan":"f2782ddac82c70df313012da5f71f1f06b5553ca","status":"affected","version":"6ef398ea60d931b97d69ed080bd0bd00fac38ec6","versionType":"git"},{"lessThan":"b579f3a73da7a7e74213558f4cc3d865c30aaa78","status":"affected","version":"6ef398ea60d931b97d69ed080bd0bd00fac38ec6","versionType":"git"},{"lessThan":"289499907399c5a9f2ed82cb34df49112bb8488f","status":"affected","version":"6ef398ea60d931b97d69ed080bd0bd00fac38ec6","versionType":"git"},{"lessThan":"a212fc08f5c48a16a94092bf0a9a8b7cf4483b11","status":"affected","version":"6ef398ea60d931b97d69ed080bd0bd00fac38ec6","versionType":"git"},{"lessThan":"3d4ef05266ab16d8ef7dd21658a557801eb78704","status":"affected","version":"6ef398ea60d931b97d69ed080bd0bd00fac38ec6","versionType":"git"},{"lessThan":"49bdf6bbb21b9c6e3f4d0c1910bf0ef98424be95","status":"affected","version":"6ef398ea60d931b97d69ed080bd0bd00fac38ec6","versionType":"git"},{"lessThan":"9a1730245e416d11ad5c0f2c100061d61cc43f60","status":"affected","version":"6ef398ea60d931b97d69ed080bd0bd00fac38ec6","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/ethernet/broadcom/genet/bcmgenet.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.19"},{"lessThan":"3.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.258","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.209","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.175","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.142","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.92","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.34","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.258","versionStartIncluding":"3.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.209","versionStartIncluding":"3.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.175","versionStartIncluding":"3.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.142","versionStartIncluding":"3.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.92","versionStartIncluding":"3.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.34","versionStartIncluding":"3.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.11","versionStartIncluding":"3.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"3.19","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2026-07-19T15:40:22.590Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/2040eb83f6ada148fb32dd98b943a498005d79f2"},{"url":"https://git.kernel.org/stable/c/f2782ddac82c70df313012da5f71f1f06b5553ca"},{"url":"https://git.kernel.org/stable/c/b579f3a73da7a7e74213558f4cc3d865c30aaa78"},{"url":"https://git.kernel.org/stable/c/289499907399c5a9f2ed82cb34df49112bb8488f"},{"url":"https://git.kernel.org/stable/c/a212fc08f5c48a16a94092bf0a9a8b7cf4483b11"},{"url":"https://git.kernel.org/stable/c/3d4ef05266ab16d8ef7dd21658a557801eb78704"},{"url":"https://git.kernel.org/stable/c/49bdf6bbb21b9c6e3f4d0c1910bf0ef98424be95"},{"url":"https://git.kernel.org/stable/c/9a1730245e416d11ad5c0f2c100061d61cc43f60"}],"title":"net: bcmgenet: keep RBUF EEE/PM disabled","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64125","datePublished":"2026-07-19T15:40:22.590Z","dateReserved":"2026-07-19T07:54:57.036Z","dateUpdated":"2026-07-19T15:40:22.590Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-19 16:17:54","lastModifiedDate":"2026-07-19 16:17:54","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64125","Ordinal":"1","Title":"net: bcmgenet: keep RBUF EEE/PM disabled","CVE":"CVE-2026-64125","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64125","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"net: bcmgenet: keep RBUF EEE/PM disabled"}]}}}