247 lines
13 KiB
JSON
247 lines
13 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-2026-53151",
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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": "2026-06-09T07:44:35.388Z",
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"datePublished": "2026-06-25T08:38:36.187Z",
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"dateUpdated": "2026-10-19T19:57:25.967Z"
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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": "2026-08-05T12:33:31.692Z"
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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\nrxrpc: Fix the ACK parser to extract the SACK table for parsing\n\nFix modification of the received skbuff in rxrpc_input_soft_acks() and a\npotential incorrect access of the buffer in a fragmented UDP packet (the\npacket would probably have to be deliberately pre-generated as fragmented)\nwhen AF_RXRPC tries to extract the contents of the SACK table by copying\nout the contents of the SACK table into a buffer before attempting to parse\n\nAF_RXRPC assumes that it can just call skb_condense() and then validly\naccess the SACK table from skb->data and that it will be a flat buffer -\nbut skb_condense() can silently fail to do anything under some\ncircumstances.\n\nNote that whilst rxrpc_input_soft_acks() should be able to parse extended\nACKs, the rest of AF_RXRPC doesn't currently support that.\n\nFurther, there's then no need to call skb_condense() in rxrpc_input_ack(),\nso don't."
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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:H/I:H/A:H",
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"baseScore": 9.8,
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"baseSeverity": "CRITICAL"
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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 - AF_RXRPC processes ACK packets received over UDP from a network peer. A malicious remote peer can send a crafted fragmented RxRPC ACK for an active transmitting call.\nAC:L - The needed fragmented/non-linear skb and ACK fields are attacker-controlled packet properties, and valid call state can be created by participating as the RxRPC peer. No race or condition outside the attacker's control is required.\nPR:N - The vulnerable parser is reached from network packet receive after protocol matching checks, not after any local privilege check. A remote RxRPC peer does not need an account or kernel privilege on the target.\nUI:N - Once an RxRPC service/client call exists, the malicious ACK is processed automatically by the kernel receive path. No victim user action is needed to parse the packet.\nS:U - The corruption occurs inside the target kernel's networking/RxRPC memory management context. It does not inherently cross into another security authority such as a hypervisor boundary.\nC:H - The bug performs out-of-bounds reads past the skb linear area into kernel memory while parsing attacker-supplied ACK state. As kernel memory corruption with read exposure potential, confidentiality impact is high.\nI:H - The soft-ACK loop performs read-modify-write shifts through the out-of-bounds pointer, corrupting skb tailroom, skb_shared_info, or adjacent slab memory. This is an out-of-bounds write primitive in kernel memory.\nA:H - Corrupting skb metadata or adjacent kernel objects can readily trigger an oops, panic, or memory-management failure. The crafted ACK can be sent repeatedly to sustain denial of service."
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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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"net/rxrpc/input.c"
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],
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"versions": [
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{
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"version": "d57a3a151660902091491ac2633134e1be92557f",
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"lessThan": "5d1ae4e17a3ecd8561cdb4f4f70152f41039c4e1",
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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": "d57a3a151660902091491ac2633134e1be92557f",
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"lessThan": "775c5e89272a2615b72bb84f611ba66fa3b7493e",
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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": "d57a3a151660902091491ac2633134e1be92557f",
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"lessThan": "566c4c1244de50fbff1f89ff93c9d7b0fc256db4",
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"status": "affected",
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{
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"lessThan": "333b6d5bb9f87827ac2639c737bf9613dbae7253",
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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/rxrpc/input.c"
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],
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"versions": [
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{
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"version": "6.2",
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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": "6.2",
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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": "6.6.144",
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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": "6.12.95",
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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": "6.18.36",
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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": "7.0.13",
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"lessThanOrEqual": "7.0.*",
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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",
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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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"nodes": [
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"operator": "OR",
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"negate": false,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.2",
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"versionEndExcluding": "6.6.144"
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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/5d1ae4e17a3ecd8561cdb4f4f70152f41039c4e1"
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},
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{
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"url": "https://git.kernel.org/stable/c/775c5e89272a2615b72bb84f611ba66fa3b7493e"
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},
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{
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"url": "https://git.kernel.org/stable/c/566c4c1244de50fbff1f89ff93c9d7b0fc256db4"
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},
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{
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"url": "https://git.kernel.org/stable/c/224298450be5c04d2a6ea1c2a94669d7ebf65d00"
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},
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{
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"url": "https://git.kernel.org/stable/c/333b6d5bb9f87827ac2639c737bf9613dbae7253"
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}
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],
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"title": "rxrpc: Fix the ACK parser to extract the SACK table for parsing",
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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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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-53151",
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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": "yes"
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},
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{
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"Technical Impact": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T15:26:03.906591Z"
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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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"cweId": "CWE-125",
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"description": "CWE-125 Out-of-bounds Read"
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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": "2026-10-19T19:57:25.967Z"
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}
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}
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]
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}
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} |