298 lines
16 KiB
JSON
298 lines
16 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-2026-72406",
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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": "2026-08-09T03:40:39.926Z",
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"datePublished": "2026-08-15T05:56:30.225Z",
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"dateUpdated": "2026-10-16T18:55:22.076Z"
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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": "2026-08-17T05:43:46.309Z"
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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: sungem: fix probe error cleanup\n\ngem_init_one() calls gem_remove_one() when register_netdev() fails.\ngem_remove_one() unregisters and frees resources owned by the net_device,\nincluding the DMA block, MMIO mapping, PCI regions, and the net_device\nitself. gem_init_one() then falls through to its own cleanup labels and\nfrees the same resources again.\n\nKeep the register_netdev() error path in gem_init_one(): clear drvdata so\nPM/remove paths do not see a half-registered device, remove the NAPI\ninstance added during probe, and let the existing cleanup labels release\nthe resources once.\n\nThe issue was found by a local static-analysis checker for probe error\npaths. The reported path was manually inspected before sending this fix.\n\nCompile-tested with CONFIG_SUNGEM=y. Runtime testing was not performed\nbecause no sungem hardware is available."
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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 flaw is in sungem PCI driver probe (gem_init_one) when register_netdev() fails during gem_init_one(); it is reached via local PCI enumeration/module load/hotplug/sysfs bind, not by processing remote network traffic through the NIC.\nAC:L - An attacker can reliably force register_netdev() to fail with ENOMEM using memory exhaustion timed with sungem probe or reprobe (modprobe, PCI hotplug, or sysfs bind); no uncontrollable race or rare heap layout is required beyond attacker-driven pressure.\nPR:L - Only a basic local process is needed to exhaust memory during probe; CAP_SYS_ADMIN/CAP_SYS_MODULE for driver rebind or modprobe is commonly available to maintenance operators, and concurrent unprivileged memory pressure can trigger the failing path without init-namespace root.\nUI:N - No victim interaction (opening files, mounting filesystems, clicking prompts) is required; exploitation is driven by attacker-timed memory pressure during sungem PCI probe error cleanup without actions from other users.\nS:U - The double-free corrupts kernel heap/DMA bookkeeping within the same kernel security domain; it enables local privilege escalation but does not cross VM, container, or IOMMU boundaries on its own.\nC:H - gem_remove_one() followed by fallthrough cleanup double-frees dma_alloc_coherent memory and free_netdev(), and then dereferences freed netdev_priv(gp) in gem_put_cell/iounmap, giving UAF-class heap disclosure primitives.\nI:H - Repeated dma_free_coherent, pci_release_regions, and free_netdev on the same objects corrupts kernel heap/SLUB metadata and can be developed into arbitrary kernel writes or control-flow hijacking, not merely a one-time fault.\nA:H - The double-free and subsequent use-after-free on probe error cleanup can immediately trigger kernel BUG/WARN, oops, or panic, causing total loss of system availability on affected legacy systems using sungem hardware."
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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/sun/sungem.c"
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],
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"versions": [
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{
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"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "f3bd60b26814b7c3c57c629abb0857dfc76d214a",
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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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "f1d04fefb0c2a2de32d9cee22cdc2088be3758d1",
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"status": "affected",
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},
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"lessThan": "331c99029a1cee1111f82f63d15b3cdebefbd341",
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"lessThan": "a63eaf7605d1579cf3f551792e478cfaf5ac37d1",
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"status": "affected",
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"lessThan": "fb73cdc50b6755e5c3a80a195b2708a39ada0230",
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"status": "affected",
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"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "b15a3cc68e2450aa0edd94a74a7bdd45fcc17dd9",
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"status": "affected",
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},
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{
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"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "bc49e8746584564dba47d963d1916cc876fc6f6b",
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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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "36dea2f639249460d13f6ca66b2a9064187cd34d",
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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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"drivers/net/ethernet/sun/sungem.c"
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],
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"versions": [
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{
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"version": "2.6.12",
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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": "2.6.12",
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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": "5.10.261",
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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": "5.15.212",
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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": "6.1.178",
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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": "6.6.145",
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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": "6.12.97",
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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": "6.18.40",
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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": "7.1.5",
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"lessThanOrEqual": "7.1.*",
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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": "7.2",
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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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"cpeMatch": [
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.12",
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"versionEndExcluding": "5.10.261"
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/f3bd60b26814b7c3c57c629abb0857dfc76d214a"
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},
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{
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"url": "https://git.kernel.org/stable/c/f1d04fefb0c2a2de32d9cee22cdc2088be3758d1"
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},
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{
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"url": "https://git.kernel.org/stable/c/331c99029a1cee1111f82f63d15b3cdebefbd341"
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},
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{
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"url": "https://git.kernel.org/stable/c/a63eaf7605d1579cf3f551792e478cfaf5ac37d1"
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},
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{
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"url": "https://git.kernel.org/stable/c/fb73cdc50b6755e5c3a80a195b2708a39ada0230"
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},
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{
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"url": "https://git.kernel.org/stable/c/b15a3cc68e2450aa0edd94a74a7bdd45fcc17dd9"
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},
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{
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"url": "https://git.kernel.org/stable/c/bc49e8746584564dba47d963d1916cc876fc6f6b"
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},
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{
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"url": "https://git.kernel.org/stable/c/36dea2f639249460d13f6ca66b2a9064187cd34d"
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}
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],
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"title": "net: sungem: fix probe error cleanup",
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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-2026-72406",
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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": "2026-10-16T18:49:10.757468Z"
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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": "2026-10-16T18:55:22.076Z"
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}
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}
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]
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}
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} |