{"cve":{"cve_id":"CVE-2026-53013","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":null,"epss_percentile":null,"epss_as_of":null,"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmacvlan: fix macvlan_get_size() not reserving space for IFLA_MACVLAN_BC_CUTOFF\n\nmacvlan_get_size() does not account for IFLA_MACVLAN_BC_CUTOFF, but\nmacvlan_fill_info() conditionally includes it when port->bc_cutoff != 1.\nThis causes nla_put_s32() to fail with -EMSGSIZE when the netlink skb\nruns out of space, triggering a WARN_ON in rtnetlink and preventing the\ninterface from being dumped.\n\nThe bug can be reproduced with:\n\n  ip link add macvlan0 link eth0 type macvlan mode bridge\n  ip link set macvlan0 type macvlan bc_cutoff 0\n  ip -d link show macvlan0   # fails with -EMSGSIZE\n\nThe bc_cutoff feature was added in commit 954d1fa1ac93 (\"macvlan: Add\nnetlink attribute for broadcast cutoff\"), which added the nla_put_s32()\ncall in macvlan_fill_info() but missed adding the corresponding\nnla_total_size(4) in macvlan_get_size(). A follow-up commit\n55cef78c244d (\"macvlan: add forgotten nla_policy for\nIFLA_MACVLAN_BC_CUTOFF\") fixed the missing nla_policy entry but still\ndid not fix the size calculation.","published_at":"2026-06-24T16:29:23.856000Z","last_modified_at":null,"cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":null,"nvd_references":["https://git.kernel.org/stable/c/4979252758387b338ca968ba7e0515b0ae2257e3","https://git.kernel.org/stable/c/77ecfa4e27f282d224215895ddfbeb916fc75e24","https://git.kernel.org/stable/c/b6b7154e9f5d75b608ceb2d05b376de8c638c40e","https://git.kernel.org/stable/c/1c004f14ccdc11585625c168bb9a7c5e1b8afb0c","https://git.kernel.org/stable/c/fa92a77b0ed4d5f11a71665a232ac5a54a4b055d"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-28T17:55:22.518073Z","updated_at":"2026-06-28T23:30:49.890169Z"},"effective_severity":null,"badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348","version_start_inclusive":true,"version_end":"4979252758387b338ca968ba7e0515b0ae2257e3","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348:4979252758387b338ca968ba7e0515b0ae2257e3"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348","version_start_inclusive":true,"version_end":"77ecfa4e27f282d224215895ddfbeb916fc75e24","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348:77ecfa4e27f282d224215895ddfbeb916fc75e24"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348","version_start_inclusive":true,"version_end":"b6b7154e9f5d75b608ceb2d05b376de8c638c40e","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348:b6b7154e9f5d75b608ceb2d05b376de8c638c40e"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348","version_start_inclusive":true,"version_end":"1c004f14ccdc11585625c168bb9a7c5e1b8afb0c","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348:1c004f14ccdc11585625c168bb9a7c5e1b8afb0c"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348","version_start_inclusive":true,"version_end":"fa92a77b0ed4d5f11a71665a232ac5a54a4b055d","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348:fa92a77b0ed4d5f11a71665a232ac5a54a4b055d"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.4","version_start_inclusive":true,"version_end":"6.4","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.4:6.4"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"6.4","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:6.4"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.6.141","version_start_inclusive":true,"version_end":"6.6.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.6.141:6.6.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.12.91","version_start_inclusive":true,"version_end":"6.12.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.12.91:6.12.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.18.33","version_start_inclusive":true,"version_end":"6.18.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.18.33:6.18.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.0.10","version_start_inclusive":true,"version_end":"7.0.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.0.10:7.0.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.1","version_start_inclusive":true,"version_end":"*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.1:*"}],"exploit_refs":[],"news":[],"references":[{"url":"https://git.kernel.org/stable/c/4979252758387b338ca968ba7e0515b0ae2257e3","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/77ecfa4e27f282d224215895ddfbeb916fc75e24","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/b6b7154e9f5d75b608ceb2d05b376de8c638c40e","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/1c004f14ccdc11585625c168bb9a7c5e1b8afb0c","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/fa92a77b0ed4d5f11a71665a232ac5a54a4b055d","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-24T16:29:23.856000Z","label":"CVE published","source":null}]}