373 lines
18 KiB
JSON
373 lines
18 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-2025-38342",
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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": "2025-04-16T04:51:24.005Z",
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"datePublished": "2025-07-10T08:15:11.561Z",
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"dateUpdated": "2026-10-15T21:52:14.411Z"
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},
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"containers": {
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"cna": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T12:01:14.909Z"
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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\nsoftware node: Correct a OOB check in software_node_get_reference_args()\n\nsoftware_node_get_reference_args() wants to get @index-th element, so\nthe property value requires at least '(index + 1) * sizeof(*ref)' bytes\nbut that can not be guaranteed by current OOB check, and may cause OOB\nfor malformed property.\n\nFix by using as OOB check '((index + 1) * sizeof(*ref) > prop->length)'."
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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:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7,
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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 affected code is driver-core firmware-node plumbing reached only during in-kernel device/driver probe and property lookups on the local machine (gpiolib-swnode, iio/inkern, sfp-bus, reset, mailbox, v4l2-fwnode); no packet, socket or remote peer data ever reaches `software_node_get_reference_args()`.\nAC:H - The faulty bound only differs from the correct one when `prop->length` is not an exact multiple of `sizeof(struct software_node_ref_args)`, and every in-tree `DEV_PROP_REF` property is built by `PROPERTY_ENTRY_REF[_ARRAY[_LEN]]()`, which always sets an exact multiple; the required malformed property table is a condition the attacker cannot create or influence.\nPR:L - If a mis-sized reference property existed, the lookup is driven from ordinary probe/consumer paths that an unprivileged local user can provoke (device binding, opening a consumer device node) without any capability; scored as low privilege rather than high since no root-only interface gates it.\nUI:N - The out-of-bounds element read happens automatically inside the property lookup during device probe or consumer resource acquisition, with no action required from another user.\nS:U - The overread, wild pointer dereference and any resulting crash are confined to the kernel's own security authority on the same host; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - Up to 87 bytes of adjacent slab memory beyond the reference array are read and interpreted as a `software_node_ref_args`, and the eight `u64 args[]` values from that out-of-bounds memory are propagated to consumers (GPIO/IIO/reset specifiers) where they can surface, making this more than a strictly bounded few-byte read.\nI:H - The out-of-bounds bytes are type-confused into a live `struct fwnode_handle *` that is dereferenced and invoked through its ops vtable (`fwnode_property_read_u32()`, `fwnode_handle_get()` → `kobject_get()`), giving an indirect call through non-object memory and a refcount increment at an out-of-bounds address — a control-flow-relevant corruption primitive.\nA:H - Reading past the allocation yields a garbage `fwnode` pointer that is immediately dereferenced and called through, producing a kernel oops/panic (and a KASAN slab-out-of-bounds report on instrumented kernels)."
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}
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]
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}
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],
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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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"version": "6.16",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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"title": "software node: Correct a OOB check in software_node_get_reference_args()",
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