271 lines
14 KiB
JSON
271 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-2023-53566",
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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": "2025-10-04T15:14:15.924Z",
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"datePublished": "2025-10-04T15:17:08.598Z",
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"dateUpdated": "2026-10-15T21:41:30.987Z"
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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": "2026-08-05T09:14:52.185Z"
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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: nft_set_rbtree: fix null deref on element insertion\n\nThere is no guarantee that rb_prev() will not return NULL in nft_rbtree_gc_elem():\n\ngeneral protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN\nKASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]\n nft_add_set_elem+0x14b0/0x2990\n nf_tables_newsetelem+0x528/0xb30\n\nFurthermore, there is a possible use-after-free while iterating,\n'node' can be free'd so we need to cache the next value to use."
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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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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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:L - The vulnerable code is reached only through the nfnetlink/nftables netlink socket (NFT_MSG_NEWSETELEM), which requires local system access; there is no packet-processing path into nft_rbtree_gc_elem().\nAC:L - The attacker fully controls set contents, element timeouts, and insertion order, so making an expired element the leftmost rbtree node (rb_prev() == NULL) during the overlap walk is deterministic and needs no race or unpredictable memory layout.\nPR:L - Only CAP_NET_ADMIN in the network namespace is required, enforced via namespace-relative netlink_net_capable(), which any unprivileged user obtains with \"unshare -Urn\"; nftables and the rbtree set backend are fully netns-aware and autoloaded.\nUI:N - The attacker triggers the bug entirely from their own process by issuing netlink set-element operations; no victim action is involved.\nS:U - The corruption and crash occur within the kernel of the same host and security authority as the attacking task, with no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - The fix addresses a use-after-free during the tree walk (an rb_erase()'d, RCU-freed element is re-entered via rb_next()), and a UAF/double-free of nft_rbtree_elem objects gives the attacker control over reclaimed slab contents and thus a kernel memory read primitive.\nI:H - Beyond the crash, rb_erase() is invoked on an unvalidated rbe_prev (NULL or a wrong still-active element) and on already-erased nodes, producing attacker-influenced rbtree pointer writes and double nft_set_elem_destroy() — a classic heap-corruption primitive usable for control-flow hijack.\nA:H - The documented and readily reproducible outcome is a general protection fault / null-ptr-deref oops inside nft_add_set_elem() while holding the rbtree write lock and nftables commit mutex, panicking the kernel or wedging the netfilter subsystem."
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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/netfilter/nft_set_rbtree.c"
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],
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"versions": [
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{
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"version": "7ab87a326f20c52ff4d9972052d085be951c704b",
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"lessThan": "b76db53ee8802ee5683f8cb401d7e2ec6f9b3d56",
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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": "181859bdfb9734aca449512fccaee4cacce64aed",
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"lessThan": "899aa5638568abf5d69de7a7bb95e4615157375b",
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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": "4aacf3d78424293e318c616016865380b37b9cc5",
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"lessThan": "3fa13203b6d90cc3a33af47b058739f92ab82eef",
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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": "2bf1435fa19d2c58054391b3bba40d5510a5758c",
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"lessThan": "ec5caa765f7f6960011c919c9aeb1467940421f6",
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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": "318cb24a4c3fce8140afaf84e4d45fcb76fb280b",
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"lessThan": "a836be60a3aabcedcd9c79f545d409ace1f20ba6",
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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": "c9e6978e2725a7d4b6cd23b2facd3f11422c0643",
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"lessThan": "a337706c1fb35aac3f26b48aca80421bdbe1d33a",
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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": "c9e6978e2725a7d4b6cd23b2facd3f11422c0643",
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"lessThan": "61ae320a29b0540c16931816299eb86bf2b66c08",
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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": "5.10.166",
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"lessThan": "5.10.181",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "5.15.91",
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"lessThan": "5.15.113",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.1.9",
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"lessThan": "6.1.30",
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"status": "affected",
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"versionType": "semver"
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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/netfilter/nft_set_rbtree.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": "5.10.181",
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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": "5.15.113",
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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": "6.1.30",
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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": "6.3.4",
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"lessThanOrEqual": "6.3.*",
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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",
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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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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.10.166",
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"versionEndExcluding": "5.10.181"
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/b76db53ee8802ee5683f8cb401d7e2ec6f9b3d56"
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},
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{
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"url": "https://git.kernel.org/stable/c/899aa5638568abf5d69de7a7bb95e4615157375b"
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},
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{
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"url": "https://git.kernel.org/stable/c/3fa13203b6d90cc3a33af47b058739f92ab82eef"
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},
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{
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"url": "https://git.kernel.org/stable/c/ec5caa765f7f6960011c919c9aeb1467940421f6"
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},
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{
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"url": "https://git.kernel.org/stable/c/a836be60a3aabcedcd9c79f545d409ace1f20ba6"
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},
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{
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"url": "https://git.kernel.org/stable/c/a337706c1fb35aac3f26b48aca80421bdbe1d33a"
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},
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{
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"url": "https://git.kernel.org/stable/c/61ae320a29b0540c16931816299eb86bf2b66c08"
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}
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],
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"title": "netfilter: nft_set_rbtree: fix null deref on element insertion",
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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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"id": "CVE-2023-53566",
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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": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-15T21:35:38.094456Z"
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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": "2026-10-15T21:41:30.987Z"
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}
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}
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]
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}
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} |