206 lines
11 KiB
JSON
206 lines
11 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-2024-45001",
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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": "2024-08-21T05:34:56.678Z",
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"datePublished": "2024-09-04T19:54:44.961Z",
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"dateUpdated": "2026-08-05T11:37:38.436Z"
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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": "2026-08-05T11:37:38.436Z"
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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: mana: Fix RX buf alloc_size alignment and atomic op panic\n\nThe MANA driver's RX buffer alloc_size is passed into napi_build_skb() to\ncreate SKB. skb_shinfo(skb) is located at the end of skb, and its alignment\nis affected by the alloc_size passed into napi_build_skb(). The size needs\nto be aligned properly for better performance and atomic operations.\nOtherwise, on ARM64 CPU, for certain MTU settings like 4000, atomic\noperations may panic on the skb_shinfo(skb)->dataref due to alignment fault.\n\nTo fix this bug, add proper alignment to the alloc_size calculation.\n\nSample panic info:\n[ 253.298819] Unable to handle kernel paging request at virtual address ffff000129ba5cce\n[ 253.300900] Mem abort info:\n[ 253.301760] ESR = 0x0000000096000021\n[ 253.302825] EC = 0x25: DABT (current EL), IL = 32 bits\n[ 253.304268] SET = 0, FnV = 0\n[ 253.305172] EA = 0, S1PTW = 0\n[ 253.306103] FSC = 0x21: alignment fault\nCall trace:\n __skb_clone+0xfc/0x198\n skb_clone+0x78/0xe0\n raw6_local_deliver+0xfc/0x228\n ip6_protocol_deliver_rcu+0x80/0x500\n ip6_input_finish+0x48/0x80\n ip6_input+0x48/0xc0\n ip6_sublist_rcv_finish+0x50/0x78\n ip6_sublist_rcv+0x1cc/0x2b8\n ipv6_list_rcv+0x100/0x150\n __netif_receive_skb_list_core+0x180/0x220\n netif_receive_skb_list_internal+0x198/0x2a8\n __napi_poll+0x138/0x250\n net_rx_action+0x148/0x330\n handle_softirqs+0x12c/0x3a0"
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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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"baseScore": 7.5,
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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:N - The fault is triggered entirely by receiving a packet on the MANA NIC's RX path, which is the internet/VNet-facing interface of an Azure VM; a remote attacker's packet reaching any of the ubiquitous `skb_clone()` consumers (AF_PACKET tap, bridge flooding, multicast/raw socket delivery) panics the machine.\nAC:L - The misalignment is present with the default MTU of 1500 as well as jumbo settings (shinfo offset ≡ mtu+2 mod 4 for all standard MTUs), requires no special configuration, and the attacker simply sends ordinary traffic — no race, no memory-layout grooming, and the crash is deterministic on the first cloned skb.\nPR:N - No authentication or credentials of any kind are needed; the panic occurs in the NAPI/softirq receive path before any socket-level authorization, so any unauthenticated host that can send packets to the VM can trigger it.\nUI:N - No victim action is required; the packet is processed automatically by the driver's NAPI poll and the network stack's clone paths.\nS:U - The alignment fault crashes the kernel that owns the vulnerable driver, with no crossing of a security authority boundary such as a VM or IOMMU escape.\nC:N - The misaligned `skb_shinfo`/`dataref` is entirely inside the allocated RX buffer, so nothing out of bounds is read and no kernel data is disclosed — the CPU faults before any access completes.\nI:N - There is no out-of-bounds or use-after-free write; the defect only mislocates an in-bounds structure whose atomic access aborts, so no kernel memory is modified and no control-flow primitive is obtained.\nA:H - The unaligned atomic on `skb_shinfo(skb)->dataref` raises an unhandled ARM64 alignment fault in softirq context, producing a fatal exception in interrupt and a full kernel panic that can be re-triggered by any subsequent received packet."
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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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"drivers/net/ethernet/microsoft/mana/mana_en.c"
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],
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"versions": [
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{
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"version": "80f6215b450eb8e92d8b1f117abf5ecf867f963e",
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"lessThan": "65f20b174ec0172f2d6bcfd8533ab9c9e7e347fa",
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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": "80f6215b450eb8e92d8b1f117abf5ecf867f963e",
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"lessThan": "e6bea6a45f8a401f3d5a430bc81814f0cc8848cf",
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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": "80f6215b450eb8e92d8b1f117abf5ecf867f963e",
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"lessThan": "32316f676b4ee87c0404d333d248ccf777f739bc",
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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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"drivers/net/ethernet/microsoft/mana/mana_en.c"
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],
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"versions": [
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{
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"version": "6.4",
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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": "6.4",
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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": "6.6.48",
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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": "6.10.7",
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"lessThanOrEqual": "6.10.*",
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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": "6.11",
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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": "6.4",
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"versionEndExcluding": "6.6.48"
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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": "6.4",
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"versionEndExcluding": "6.10.7"
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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": "6.4",
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"versionEndExcluding": "6.11"
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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/65f20b174ec0172f2d6bcfd8533ab9c9e7e347fa"
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},
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{
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"url": "https://git.kernel.org/stable/c/e6bea6a45f8a401f3d5a430bc81814f0cc8848cf"
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},
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{
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"url": "https://git.kernel.org/stable/c/32316f676b4ee87c0404d333d248ccf777f739bc"
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}
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],
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"title": "net: mana: Fix RX buf alloc_size alignment and atomic op panic",
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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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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2024-09-04T20:18:42.711602Z",
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"id": "CVE-2024-45001",
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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": "2024-09-04T20:19:02.550Z"
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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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{
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"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html"
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}
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],
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"shortName": "CVE",
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"dateUpdated": "2025-11-03T19:30:48.703Z"
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}
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}
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]
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}
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} |