{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53013", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.378Z", "datePublished": "2026-06-24T16:29:23.856Z", "dateUpdated": "2026-06-24T16:29:23.856Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-24T16:29:23.856Z"}, "descriptions": [{"lang": "en", "value": "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/macvlan.c"], "versions": [{"version": "954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348", "lessThan": "4979252758387b338ca968ba7e0515b0ae2257e3", "status": "affected", "versionType": "git"}, {"version": "954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348", "lessThan": "77ecfa4e27f282d224215895ddfbeb916fc75e24", "status": "affected", "versionType": "git"}, {"version": "954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348", "lessThan": "b6b7154e9f5d75b608ceb2d05b376de8c638c40e", "status": "affected", "versionType": "git"}, {"version": "954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348", "lessThan": "1c004f14ccdc11585625c168bb9a7c5e1b8afb0c", "status": "affected", "versionType": "git"}, {"version": "954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348", "lessThan": "fa92a77b0ed4d5f11a71665a232ac5a54a4b055d", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/macvlan.c"], "versions": [{"version": "6.4", "status": "affected"}, {"version": "0", "lessThan": "6.4", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.141", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.91", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.33", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.10", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.6.141"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.12.91"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.18.33"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "7.0.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/4979252758387b338ca968ba7e0515b0ae2257e3"}, {"url": "https://git.kernel.org/stable/c/77ecfa4e27f282d224215895ddfbeb916fc75e24"}, {"url": "https://git.kernel.org/stable/c/b6b7154e9f5d75b608ceb2d05b376de8c638c40e"}, {"url": "https://git.kernel.org/stable/c/1c004f14ccdc11585625c168bb9a7c5e1b8afb0c"}, {"url": "https://git.kernel.org/stable/c/fa92a77b0ed4d5f11a71665a232ac5a54a4b055d"}], "title": "macvlan: fix macvlan_get_size() not reserving space for IFLA_MACVLAN_BC_CUTOFF", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{}

{}

{}