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-2025-38536",
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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": "2025-04-16T04:51:24.024Z",
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"datePublished": "2025-08-16T11:12:28.627Z",
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"dateUpdated": "2026-08-05T12:02:44.569Z"
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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": "2026-08-05T12:02:44.569Z"
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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: airoha: fix potential use-after-free in airoha_npu_get()\n\nnp->name was being used after calling of_node_put(np), which\nreleases the node and can lead to a use-after-free bug.\nPreviously, of_node_put(np) was called unconditionally after\nof_find_device_by_node(np), which could result in a use-after-free if\npdev is NULL.\n\nThis patch moves of_node_put(np) after the error check to ensure\nthe node is only released after both the error and success cases\nare handled appropriately, preventing potential resource 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 vulnerable code is reached through the rtnetlink/tc flower hardware-offload configuration path (`ndo_setup_tc` → `airoha_ppe_setup_tc_block_cb`), which requires local access to issue netlink messages on the host. No remote peer data reaches `airoha_npu_get()`.\nAC:L - On an affected system the attacker triggers the faulty error path deterministically and repeatedly with a single `tc filter add ... flower` command — there is no race to win and no memory layout the attacker must guess to reach the dangling dereference.\nPR:L - Configuring tc clsact/flower offload on the GDM port requires CAP_NET_ADMIN, but the airoha netdevs are not netns-local and can be moved into a network namespace, where an unprivileged user obtains CAP_NET_ADMIN via `unshare -Urn`, so basic local user privileges suffice.\nUI:N - The attacker performs the entire sequence themselves via netlink; no victim action, no mount, and no interaction from another user is needed.\nS:U - The use-after-free occurs in kernel memory and its impact is confined to the kernel's own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The freed `struct device_node` is dereferenced and the string at `np->name` is copied into the kernel log, so reallocated heap contents can be disclosed to userspace via dmesg — a use-after-free read primitive over kernel memory.\nI:H - Use-after-free of a slab object whose lifetime the attacker can influence through repeated triggering and heap grooming is treatable as a memory-corruption primitive; per kernel scoring practice a UAF is rated High for integrity.\nA:H - Dereferencing the released `device_node` and following its `name` pointer can fault on freed or unmapped memory, producing a kernel oops/panic on an embedded router with no recovery path."
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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/airoha/airoha_npu.c"
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],
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"versions": [
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{
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"version": "23290c7bc190def4e1ca61610992d9b7c32e33f3",
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"lessThan": "df6bf96b41e547e350667bc4c143be53646d070d",
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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": "23290c7bc190def4e1ca61610992d9b7c32e33f3",
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"lessThan": "3cd582e7d0787506990ef0180405eb6224fa90a6",
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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/airoha/airoha_npu.c"
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],
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"versions": [
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{
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"version": "6.15",
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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": "6.15",
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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": "6.15.8",
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"lessThanOrEqual": "6.15.*",
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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": "6.16",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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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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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.15",
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"versionEndExcluding": "6.15.8"
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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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"versionStartIncluding": "6.15",
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"versionEndExcluding": "6.16"
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}
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]
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}
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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/df6bf96b41e547e350667bc4c143be53646d070d"
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},
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{
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"url": "https://git.kernel.org/stable/c/3cd582e7d0787506990ef0180405eb6224fa90a6"
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}
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],
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"title": "net: airoha: fix potential use-after-free in airoha_npu_get()",
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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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}
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} |