{"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"}}}}

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{"bugzilla": {"description": "kernel: macvlan: fix macvlan_get_size() not reserving space for IFLA_MACVLAN_BC_CUTOFF", "id": "2492298", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492298"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-131", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmacvlan: fix macvlan_get_size() not reserving space for IFLA_MACVLAN_BC_CUTOFF\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.\nThe bug can be reproduced with:\nip link add macvlan0 link eth0 type macvlan mode bridge\nip link set macvlan0 type macvlan bc_cutoff 0\nip -d link show macvlan0 # fails with -EMSGSIZE\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.", "A flaw was found in the Linux kernel's macvlan module. An issue in the `macvlan_get_size()` function, which incorrectly calculates the required space for network interface information, can lead to a denial of service. A local user could exploit this by configuring a macvlan interface with a specific broadcast cutoff setting, causing the system to fail when attempting to display network interface details."], "name": "CVE-2026-53013", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-06-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53013\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53013\nhttps://lore.kernel.org/linux-cve-announce/2026062450-CVE-2026-53013-b62d@gregkh/T"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348,4979252758387b338ca968ba7e0515b0ae2257e3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348,77ecfa4e27f282d224215895ddfbeb916fc75e24)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348,b6b7154e9f5d75b608ceb2d05b376de8c638c40e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348,1c004f14ccdc11585625c168bb9a7c5e1b8afb0c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348,fa92a77b0ed4d5f11a71665a232ac5a54a4b055d)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.4"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.4)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.141,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.91,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.33,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.10,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-06-24T20:15:07.670147+00:00", "updated": "2026-06-27T02:30:03.448262+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-119", "CWE-131"]}