269 lines
14 KiB
JSON
269 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-2024-42247",
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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": "2024-07-30T07:40:12.254Z",
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"datePublished": "2024-08-07T15:14:32.232Z",
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"dateUpdated": "2026-08-05T11:36:02.565Z"
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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": "2026-08-05T11:36:02.565Z"
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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\nwireguard: allowedips: avoid unaligned 64-bit memory accesses\n\nOn the parisc platform, the kernel issues kernel warnings because\nswap_endian() tries to load a 128-bit IPv6 address from an unaligned\nmemory location:\n\n Kernel: unaligned access to 0x55f4688c in wg_allowedips_insert_v6+0x2c/0x80 [wireguard] (iir 0xf3010df)\n Kernel: unaligned access to 0x55f46884 in wg_allowedips_insert_v6+0x38/0x80 [wireguard] (iir 0xf2010dc)\n\nAvoid such unaligned memory accesses by instead using the\nget_unaligned_be64() helper macro.\n\n[Jason: replace src[8] in original patch with src+8]"
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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 same `swap_endian()` 128-bit path is executed on remotely-supplied IPv6 header bytes via `wg_allowedips_lookup_src()` on every decrypted inbound packet (receive.c:404) and via `wg_allowedips_lookup_dst()` in `wg_xmit()` for traffic a WireGuard gateway forwards into a tunnel, so received network packets reach the defect without local access.\nAC:L - On an affected architecture the misalignment is a deterministic property of netlink attribute padding and skb header placement, so every insert or IPv6 lookup triggers it with no race, memory-layout grooming, or victim state required.\nPR:N - On a WireGuard routing gateway an unauthenticated off-path sender whose packets are forwarded into the tunnel drives `wg_allowedips_lookup_dst()` with no credentials at all; the alternative paths need only an authenticated peer or namespaced CAP_NET_ADMIN obtainable via `unshare -Urn`, so the higher of these is None.\nUI:N - The vulnerable code runs entirely in the kernel's packet transmit/receive and netlink configuration paths; no administrator or user action is needed beyond a WireGuard interface being configured.\nS:U - The fault and its consequences are confined to the kernel of the affected host, with no crossing of a VM, IOMMU, or sandbox authority boundary.\nC:N - The unaligned loads read only within a length-validated 16-byte `in6_addr`/netlink attribute or a bounds-checked IPv6 header, so no out-of-bounds data is read and nothing is disclosed to the attacker.\nI:N - There is no out-of-bounds or attacker-influenced write; on architectures with a fixup handler the emulated load yields the correct value, leaving the allowedips trie and all other kernel state intact.\nA:H - On architectures lacking hardware unaligned 64-bit access the load raises a kernel-mode alignment abort, and where no fixup handler exists (ARM without CONFIG_ALIGNMENT_TRAP, or parisc when emulation fails via `die_if_kernel`) this becomes an unrecoverable oops; even when emulated, a remote packet flow forces a trap per packet, degrading the system."
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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/wireguard/allowedips.c"
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],
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"versions": [
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{
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"version": "e7096c131e5161fa3b8e52a650d7719d2857adfd",
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"lessThan": "ae630de24efb123d7199a43256396d7758f4cb75",
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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": "e7096c131e5161fa3b8e52a650d7719d2857adfd",
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"lessThan": "b4764f0ad3d68de8a0b847c05f427afb86dd54e6",
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"status": "affected",
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"lessThan": "217978a29c6ceca76d3c640bf94bdf50c268d801",
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"status": "affected",
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"lessThan": "6638a203abad35fa636d59ac47bdbc4bc100fd74",
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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": "e7096c131e5161fa3b8e52a650d7719d2857adfd",
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"lessThan": "2fb34bf76431e831f9863cd59adc0bd1f67b0fbf",
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"status": "affected",
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"lessThan": "948f991c62a4018fb81d85804eeab3029c6209f8",
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"status": "affected",
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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/wireguard/allowedips.c"
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],
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"versions": [
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{
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"version": "5.6",
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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": "5.6",
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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": "5.10.222",
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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": "5.15.163",
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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": "6.1.100",
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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": "6.6.41",
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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": "6.9.10",
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"lessThanOrEqual": "6.9.*",
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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",
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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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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.6",
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"references": [
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"url": "https://git.kernel.org/stable/c/ae630de24efb123d7199a43256396d7758f4cb75"
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},
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{
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"url": "https://git.kernel.org/stable/c/b4764f0ad3d68de8a0b847c05f427afb86dd54e6"
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"url": "https://git.kernel.org/stable/c/217978a29c6ceca76d3c640bf94bdf50c268d801"
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{
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"url": "https://git.kernel.org/stable/c/6638a203abad35fa636d59ac47bdbc4bc100fd74"
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{
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"url": "https://git.kernel.org/stable/c/2fb34bf76431e831f9863cd59adc0bd1f67b0fbf"
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{
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"url": "https://git.kernel.org/stable/c/948f991c62a4018fb81d85804eeab3029c6209f8"
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}
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],
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"title": "wireguard: allowedips: avoid unaligned 64-bit memory accesses",
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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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"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-2024-42247",
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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": "2024-09-10T16:13:28.429050Z"
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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": "2024-09-11T17:34:31.003Z"
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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/2025/01/msg00001.html"
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}
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"dateUpdated": "2025-11-03T22:02:49.575Z"
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}
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}
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} |