267 lines
14 KiB
JSON
267 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-2023-53369",
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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": "2025-09-17T14:54:09.734Z",
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"datePublished": "2025-09-18T13:33:17.384Z",
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"dateUpdated": "2026-05-11T19:43:36.996Z"
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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": "2026-05-11T19:43:36.996Z"
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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: dcb: choose correct policy to parse DCB_ATTR_BCN\n\nThe dcbnl_bcn_setcfg uses erroneous policy to parse tb[DCB_ATTR_BCN],\nwhich is introduced in commit 859ee3c43812 (\"DCB: Add support for DCB\nBCN\"). Please see the comment in below code\n\nstatic int dcbnl_bcn_setcfg(...)\n{\n ...\n ret = nla_parse_nested_deprecated(..., dcbnl_pfc_up_nest, .. )\n // !!! dcbnl_pfc_up_nest for attributes\n // DCB_PFC_UP_ATTR_0 to DCB_PFC_UP_ATTR_ALL in enum dcbnl_pfc_up_attrs\n ...\n for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {\n // !!! DCB_BCN_ATTR_RP_0 to DCB_BCN_ATTR_RP_7 in enum dcbnl_bcn_attrs\n ...\n value_byte = nla_get_u8(data[i]);\n ...\n }\n ...\n for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {\n // !!! DCB_BCN_ATTR_BCNA_0 to DCB_BCN_ATTR_RI in enum dcbnl_bcn_attrs\n ...\n value_int = nla_get_u32(data[i]);\n ...\n }\n ...\n}\n\nThat is, the nla_parse_nested_deprecated uses dcbnl_pfc_up_nest\nattributes to parse nlattr defined in dcbnl_pfc_up_attrs. But the\nfollowing access code fetch each nlattr as dcbnl_bcn_attrs attributes.\nBy looking up the associated nla_policy for dcbnl_bcn_attrs. We can find\nthe beginning part of these two policies are \"same\".\n\nstatic const struct nla_policy dcbnl_pfc_up_nest[...] = {\n [DCB_PFC_UP_ATTR_0] = {.type = NLA_U8},\n [DCB_PFC_UP_ATTR_1] = {.type = NLA_U8},\n [DCB_PFC_UP_ATTR_2] = {.type = NLA_U8},\n [DCB_PFC_UP_ATTR_3] = {.type = NLA_U8},\n [DCB_PFC_UP_ATTR_4] = {.type = NLA_U8},\n [DCB_PFC_UP_ATTR_5] = {.type = NLA_U8},\n [DCB_PFC_UP_ATTR_6] = {.type = NLA_U8},\n [DCB_PFC_UP_ATTR_7] = {.type = NLA_U8},\n [DCB_PFC_UP_ATTR_ALL] = {.type = NLA_FLAG},\n};\n\nstatic const struct nla_policy dcbnl_bcn_nest[...] = {\n [DCB_BCN_ATTR_RP_0] = {.type = NLA_U8},\n [DCB_BCN_ATTR_RP_1] = {.type = NLA_U8},\n [DCB_BCN_ATTR_RP_2] = {.type = NLA_U8},\n [DCB_BCN_ATTR_RP_3] = {.type = NLA_U8},\n [DCB_BCN_ATTR_RP_4] = {.type = NLA_U8},\n [DCB_BCN_ATTR_RP_5] = {.type = NLA_U8},\n [DCB_BCN_ATTR_RP_6] = {.type = NLA_U8},\n [DCB_BCN_ATTR_RP_7] = {.type = NLA_U8},\n [DCB_BCN_ATTR_RP_ALL] = {.type = NLA_FLAG},\n // from here is somewhat different\n [DCB_BCN_ATTR_BCNA_0] = {.type = NLA_U32},\n ...\n [DCB_BCN_ATTR_ALL] = {.type = NLA_FLAG},\n};\n\nTherefore, the current code is buggy and this\nnla_parse_nested_deprecated could overflow the dcbnl_pfc_up_nest and use\nthe adjacent nla_policy to parse attributes from DCB_BCN_ATTR_BCNA_0.\n\nHence use the correct policy dcbnl_bcn_nest to parse the nested\ntb[DCB_ATTR_BCN] TLV."
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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/dcb/dcbnl.c"
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],
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"versions": [
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{
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"version": "859ee3c43812051e21816c6d6d4cc04fb7ce9b2e",
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"lessThan": "5b3dbedb8d4a0f9f7ce904d76b885438af2a21f9",
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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": "859ee3c43812051e21816c6d6d4cc04fb7ce9b2e",
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"lessThan": "8e309f43d0ca4051d20736c06a6f84bbddd881da",
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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": "859ee3c43812051e21816c6d6d4cc04fb7ce9b2e",
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"lessThan": "a0da2684db18dead3bcee12fb185e596e3d63c2b",
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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": "859ee3c43812051e21816c6d6d4cc04fb7ce9b2e",
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"lessThan": "ecff20e193207b44fdbfe64d7de89890f0a7fe6c",
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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": "859ee3c43812051e21816c6d6d4cc04fb7ce9b2e",
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"lessThan": "199fde04bd875d28b3a5ca525eaaa004eec6e947",
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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": "859ee3c43812051e21816c6d6d4cc04fb7ce9b2e",
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"lessThan": "31d49ba033095f6e8158c60f69714a500922e0c3",
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"status": "affected",
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"versionType": "git"
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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/dcb/dcbnl.c"
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],
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"versions": [
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{
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"version": "2.6.29",
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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": "2.6.29",
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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": "5.4.253",
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"lessThanOrEqual": "5.4.*",
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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": "5.10.190",
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"lessThanOrEqual": "5.10.*",
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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": "5.15.126",
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"lessThanOrEqual": "5.15.*",
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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": "6.1.45",
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"lessThanOrEqual": "6.1.*",
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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": "6.4.10",
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"lessThanOrEqual": "6.4.*",
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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": "6.5",
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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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{
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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": "2.6.29",
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"versionEndExcluding": "5.4.253"
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},
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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": "2.6.29",
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"versionEndExcluding": "5.10.190"
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},
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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": "2.6.29",
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"versionEndExcluding": "5.15.126"
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},
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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": "2.6.29",
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"versionEndExcluding": "6.1.45"
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},
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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": "2.6.29",
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"versionEndExcluding": "6.4.10"
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},
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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": "2.6.29",
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"versionEndExcluding": "6.5"
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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/5b3dbedb8d4a0f9f7ce904d76b885438af2a21f9"
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},
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{
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"url": "https://git.kernel.org/stable/c/8e309f43d0ca4051d20736c06a6f84bbddd881da"
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},
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{
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"url": "https://git.kernel.org/stable/c/a0da2684db18dead3bcee12fb185e596e3d63c2b"
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},
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{
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"url": "https://git.kernel.org/stable/c/ecff20e193207b44fdbfe64d7de89890f0a7fe6c"
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},
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{
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"url": "https://git.kernel.org/stable/c/199fde04bd875d28b3a5ca525eaaa004eec6e947"
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},
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{
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"url": "https://git.kernel.org/stable/c/31d49ba033095f6e8158c60f69714a500922e0c3"
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}
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],
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"title": "net: dcb: choose correct policy to parse DCB_ATTR_BCN",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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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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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 5.5,
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"attackVector": "LOCAL",
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"baseSeverity": "MEDIUM",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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"integrityImpact": "NONE",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"confidentialityImpact": "NONE"
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}
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},
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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-2023-53369",
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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": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-01-14T18:53:02.602085Z"
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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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"description": "CWE-noinfo Not enough information"
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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": "2026-01-14T19:03:02.451Z"
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}
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}
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]
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}
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} |