274 lines
14 KiB
JSON
274 lines
14 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-64077",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-07-19T07:54:57.031Z",
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"datePublished": "2026-07-19T15:39:50.966Z",
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"dateUpdated": "2026-10-30T12:27:34.127Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-30T12:27:34.127Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ebtables: move to two-stage removal scheme\n\nLike previous patches for x_tables, follow same pattern in ebtables.\nWe can't reuse xt helpers: ebt_table struct layout is incompatible.\n\ntable->ops assignment is now done while still holding the ebt mutex\nto make sure we never expose partially-filled table struct."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The bug is reached through ebtables setsockopt/getsockopt administration syscalls (do_ebt_set_ctl/do_ebt_get_ctl), not through processing of remotely received network or bridge frames.\nAC:L - An attacker can reliably win the race by running concurrent threads—one issuing ebtables setsockopt to register or modify a table while another destroys the network namespace or triggers module teardown.\nPR:L - All entry paths require CAP_NET_ADMIN in the target network namespace, which an unprivileged local attacker can obtain via user+network namespaces (unshare -Urn).\nUI:N - Exploitation requires no action from any other user or administrator beyond the attacker’s own local namespace and sockopt operations.\nS:U - Impact is confined to kernel memory and privileges on the host; this is a standard kernel race/UAF issue, not a VM, container, or IOMMU boundary escape.\nC:H - The missing two-stage removal allows concurrent setsockopt to use an ebt_table while __ebt_unregister_table() frees its backing structures, creating a use-after-free that can be leveraged for arbitrary kernel memory disclosure.\nI:H - The teardown race and partially-initialized table exposure enable heap use-after-free conditions that can be developed into arbitrary kernel memory writes or code execution via heap grooming.\nA:H - The NULL ops race causes a general protection fault in nf_unregister_net_hooks(), and the concurrent teardown UAF can trigger kernel oops, panic, or denial of service."
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}
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]
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}
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],
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{
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/bridge/netfilter/ebtable_broute.c",
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"net/bridge/netfilter/ebtable_filter.c",
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"net/bridge/netfilter/ebtable_nat.c",
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"net/bridge/netfilter/ebtables.c"
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{
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/bridge/netfilter/ebtable_broute.c",
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"net/bridge/netfilter/ebtable_filter.c",
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"net/bridge/netfilter/ebtable_nat.c",
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"net/bridge/netfilter/ebtables.c"
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],
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"versions": [
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{
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"version": "5.15",
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"status": "affected"
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},
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{
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"version": "0",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.191",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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},
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{
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"version": "6.6.160",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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},
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{
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"version": "6.12.114",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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},
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{
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"version": "6.18.34",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.0.11",
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"lessThanOrEqual": "7.0.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.1",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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"cpeApplicability": [
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"nodes": [
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"operator": "OR",
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/b37e27f5d5cbb7723644fdf089e28a216d6093ed"
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"url": "https://git.kernel.org/stable/c/b7f0544d86d439cb946515d2ef6a0a75e8626710"
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}
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],
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"title": "netfilter: ebtables: move to two-stage removal scheme",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-64077",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T15:36:11.050471Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-362",
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"description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')"
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}
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]
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-10-19T20:28:11.430Z"
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}
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}
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]
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}
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} |