138 lines
7.6 KiB
JSON
138 lines
7.6 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-2023-53170",
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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": "2025-09-15T13:59:19.064Z",
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"datePublished": "2025-09-15T14:04:03.446Z",
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"dateUpdated": "2026-08-05T09:12:54.214Z"
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},
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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": "2026-08-05T09:12:54.214Z"
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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: dsa: Removed unneeded of_node_put in felix_parse_ports_node\n\nRemove unnecessary of_node_put from the continue path to prevent\nchild node from being released twice, which could avoid resource\nleak or other unexpected issues."
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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 bug is in felix_parse_ports_node during DSA switch setup, reached only via local PCI/platform probe (felix_pci_probe/ocelot_ext_probe → dsa_register_switch → felix_setup → felix_parse_dt). There is no network or packet path to this DT-parsing code.\nAC:L - On affected VSC7512 deployments (ports with OCELOT_PORT_MODE_NONE in the vulnerable window) whose DT still lists those ports with a phy-mode, the extra of_node_put on the continue path runs deterministically every probe with no race or attacker-uncontrollable timing requirement.\nPR:L - The double put occurs automatically during boot-time driver probe on that hardware/DT configuration with no capability check on the parse path; per the higher-severity reading used for similar probe-time of_node_put underflow bugs, a basic local user is treated as sufficient rather than requiring real root to create the condition.\nUI:N - Probe and DT port parsing run as part of normal driver initialization; no victim action such as mounting a filesystem or opening a device is required.\nS:U - The corrupted object is a kernel device_node/kobject and any resulting underflow or use-after-free remains inside the kernel's own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The unbalanced of_node_put drives the device_node kobject to refcount zero, producing a zombie kobject (and on OF_DYNAMIC/overlay platforms a free-while-referenced device_node), which is a use-after-free read primitive; of_node_release also dump_stacks kernel addresses. Use-after-free is scored High for confidentiality.\nI:H - A device_node/kobject left at refcount zero or freed while still linked in the tree is a heap-spray target whose fields can be overwritten, converting the underflow into an arbitrary-write and control-flow hijack primitive. Use-after-free is scored High for integrity.\nA:H - The second put hits refcount_warn_saturate() (\"refcount_t: underflow; use-after-free\"), which is fatal under panic_on_warn, and the resulting corrupted/zombie kobject causes kernel oopses even when not fully exploited."
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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/dsa/ocelot/felix.c"
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],
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"versions": [
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{
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"version": "de879a016a94a670fafeb3eb03b3d5803d81ab37",
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"lessThan": "7ead10b44b79ce8bfcd51e749d54e009de5f511a",
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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": "de879a016a94a670fafeb3eb03b3d5803d81ab37",
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"lessThan": "04499f28b40bfc24f20b0e2331008bb90a54a6cf",
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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/dsa/ocelot/felix.c"
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],
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"versions": [
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{
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"version": "6.3",
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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": "6.3",
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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": "6.4.5",
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"lessThanOrEqual": "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": "6.5",
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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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"versionStartIncluding": "6.3",
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"versionEndExcluding": "6.4.5"
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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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]
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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/7ead10b44b79ce8bfcd51e749d54e009de5f511a"
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},
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{
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"url": "https://git.kernel.org/stable/c/04499f28b40bfc24f20b0e2331008bb90a54a6cf"
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}
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],
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"title": "net: dsa: Removed unneeded of_node_put in felix_parse_ports_node",
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"x_generator": {
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