164 lines
7.9 KiB
JSON
164 lines
7.9 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-2026-72430",
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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": "2026-08-09T03:40:39.928Z",
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"datePublished": "2026-08-15T05:56:46.178Z",
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"dateUpdated": "2026-08-17T05:14:29.962Z"
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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": "2026-08-17T05:14:29.962Z"
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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\nnet/sched: act_ct: fix nf_connlabels leak on two error paths\n\ntcf_ct_fill_params() calls nf_connlabels_get() (setting put_labels) when\nTCA_CT_LABELS is present, but two later error sites use a bare return\ninstead of \"goto err\", skipping the err: nf_connlabels_put() cleanup.\nThey also precede the \"p->put_labels = put_labels\" assignment, so the\ntcf_ct_params_free() fallback does not release the count either. Each\nfailed RTM_NEWACTION on these paths leaks one nf_connlabels reference:\nnet->ct.labels_used is incremented and never released. The action is\nreachable with CAP_NET_ADMIN over the netns, i.e. from an unprivileged\nuser namespace on default-userns kernels.\n\nImpact: an unprivileged user with CAP_NET_ADMIN over a network namespace\n(e.g. via user namespaces) leaks one nf_connlabels reference per failed\nRTM_NEWACTION on the two error paths; net->ct.labels_used is never\nreleased.\n\nThe err: label is safe to reach from both sites: p->tmpl is still NULL\nthere (kzalloc'd, not yet assigned) and nf_ct_put(NULL) is a no-op, so\nno inline release is needed."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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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/sched/act_ct.c"
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],
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"versions": [
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{
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"version": "70f06c115bcca26ceeebf938e48bc8143668e38b",
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"lessThan": "13b561c893c741635adce3781490a7a1099106c8",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "70f06c115bcca26ceeebf938e48bc8143668e38b",
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"lessThan": "1d51aff78f078af1a80e9496c2f4643f4c0ef0a0",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "70f06c115bcca26ceeebf938e48bc8143668e38b",
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"lessThan": "0c3d8fc87e10e38fe054ece009d6d1f66bef2cd4",
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"status": "affected",
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{
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"lessThan": "16e088016f38cf728a0de709c3335cc5a3850476",
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"status": "affected",
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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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/sched/act_ct.c"
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],
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"versions": [
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{
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"version": "6.7",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "6.7",
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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": "6.12.97",
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"lessThanOrEqual": "6.12.*",
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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": "6.18.40",
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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": "7.1.5",
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"lessThanOrEqual": "7.1.*",
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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": "7.2",
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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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],
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"cpeApplicability": [
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{
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"nodes": [
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.7",
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"versionEndExcluding": "6.12.97"
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},
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{
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"vulnerable": true,
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"versionStartIncluding": "6.7",
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"versionEndExcluding": "7.1.5"
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"versionStartIncluding": "6.7",
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/13b561c893c741635adce3781490a7a1099106c8"
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},
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{
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"url": "https://git.kernel.org/stable/c/1d51aff78f078af1a80e9496c2f4643f4c0ef0a0"
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},
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{
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"url": "https://git.kernel.org/stable/c/0c3d8fc87e10e38fe054ece009d6d1f66bef2cd4"
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},
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{
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"url": "https://git.kernel.org/stable/c/16e088016f38cf728a0de709c3335cc5a3850476"
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}
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],
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"title": "net/sched: act_ct: fix nf_connlabels leak on two error paths",
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