288 lines
15 KiB
JSON
288 lines
15 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-2024-27016",
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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": "2024-02-19T14:20:24.209Z",
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"datePublished": "2024-05-01T05:29:57.099Z",
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"dateUpdated": "2026-08-05T11:28:59.141Z"
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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": "2026-08-05T11:28:59.141Z"
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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: flowtable: validate pppoe header\n\nEnsure there is sufficient room to access the protocol field of the\nPPPoe header. Validate it once before the flowtable lookup, then use a\nhelper function to access protocol field."
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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:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
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"baseScore": 7.1,
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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:A - The vulnerable code is the netfilter flowtable NF_NETDEV_INGRESS hook, reached purely by receiving an Ethernet frame with ethertype 0x8864 (ETH_P_PPP_SES); PPPoE session frames are a link-layer encapsulation and are not routable across L3, so the attacker must be on the same L2 segment (ISP access network of a PPPoE CPE, the router LAN, or a bridged VM/tap network).\nAC:L - The attacker simply emits a truncated PPPoE session frame carrying fewer than 8 bytes past the Ethernet header — there is no race, no memory-layout dependency, and no state the attacker cannot create, since tap/virtio, veth, and L2-tunnel decap paths impose no minimum-frame padding and can be triggered repeatedly at will.\nPR:N - No credentials or privileges on the target are needed — the flowtable ingress hook processes every received frame before any authentication, and the nftables flowtable configuration is the victim admin's normal router/offload setup, not an attacker prerequisite.\nUI:N - The out-of-bounds read happens automatically in softirq packet-receive context as soon as the crafted frame arrives on the flowtable-bound interface; no action by any local user or administrator is required.\nS:U - The out-of-bounds read and its consequences are confined to the kernel's own memory and the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:L - The bug reads 2 bytes of adjacent kernel heap memory beyond the packet buffer, but the read is strictly bounded to a fixed offset and the value is only compared against PPP_IP/PPP_IPV6, giving at most a weak fast-path-versus-slow-path oracle rather than a general memory-disclosure primitive.\nI:N - The defect is a read-only over-read; no kernel memory is written, and the misclassified packet's subsequent handling is re-validated by pskb_may_pull() in nf_flow_tuple_ip() before any header mangling occurs.\nA:H - The slab-out-of-bounds read is a KASAN-detectable memory-safety violation that panics debug/hardened kernels and can fault when the skb head abuts an unmapped region, and it is triggerable remotely, repeatedly, and without authentication on every arriving frame."
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}
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]
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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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"include/net/netfilter/nf_flow_table.h",
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"net/netfilter/nf_flow_table_inet.c",
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"net/netfilter/nf_flow_table_ip.c"
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],
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"versions": [
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{
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"version": "72efd585f7144a047f7da63864284764596ccad9",
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"lessThan": "d06977b9a4109f8738bb276125eb6a0b772bc433",
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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": "72efd585f7144a047f7da63864284764596ccad9",
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"lessThan": "8bf7c76a2a207ca2b4cfda0a279192adf27678d7",
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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": "72efd585f7144a047f7da63864284764596ccad9",
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"lessThan": "a2471d271042ea18e8a6babc132a8716bb2f08b9",
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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": "72efd585f7144a047f7da63864284764596ccad9",
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"lessThan": "cf366ee3bc1b7d1c76a882640ba3b3f8f1039163",
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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": "72efd585f7144a047f7da63864284764596ccad9",
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"lessThan": "87b3593bed1868b2d9fe096c01bcdf0ea86cbebf",
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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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"include/net/netfilter/nf_flow_table.h",
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"net/netfilter/nf_flow_table_inet.c",
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"net/netfilter/nf_flow_table_ip.c"
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],
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"versions": [
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{
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"version": "5.13",
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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": "5.13",
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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": "5.15.157",
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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": "6.1.88",
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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": "6.6.29",
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"lessThanOrEqual": "6.6.*",
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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": "6.8.8",
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"lessThanOrEqual": "6.8.*",
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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": "6.9",
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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": "5.13",
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"versionEndExcluding": "5.15.157"
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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": "5.13",
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"versionEndExcluding": "6.1.88"
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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": "5.13",
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"versionEndExcluding": "6.6.29"
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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": "5.13",
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"versionEndExcluding": "6.8.8"
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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": "5.13",
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"versionEndExcluding": "6.9"
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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/d06977b9a4109f8738bb276125eb6a0b772bc433"
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},
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{
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"url": "https://git.kernel.org/stable/c/8bf7c76a2a207ca2b4cfda0a279192adf27678d7"
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},
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{
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"url": "https://git.kernel.org/stable/c/a2471d271042ea18e8a6babc132a8716bb2f08b9"
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},
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{
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"url": "https://git.kernel.org/stable/c/cf366ee3bc1b7d1c76a882640ba3b3f8f1039163"
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{
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"url": "https://git.kernel.org/stable/c/87b3593bed1868b2d9fe096c01bcdf0ea86cbebf"
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}
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],
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"title": "netfilter: flowtable: validate pppoe header",
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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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"type": "ssvc",
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"content": {
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"timestamp": "2024-07-17T15:04:34.814514Z",
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"id": "CVE-2024-27016",
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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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"role": "CISA Coordinator",
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"version": "2.0.3"
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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": "2024-07-17T15:04:50.051Z"
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}
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},
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{
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"title": "CVE Program Container",
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"references": [
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