{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-38536",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-04-16T04:51:24.024Z",
        "datePublished": "2025-08-16T11:12:28.627Z",
        "dateUpdated": "2026-08-05T12:02:44.569Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-05T12:02:44.569Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "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."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                        "baseScore": 7.8,
                        "baseSeverity": "HIGH"
                    },
                    "scenarios": [
                        {
                            "lang": "en",
                            "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."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/ethernet/airoha/airoha_npu.c"
                    ],
                    "versions": [
                        {
                            "version": "23290c7bc190def4e1ca61610992d9b7c32e33f3",
                            "lessThan": "df6bf96b41e547e350667bc4c143be53646d070d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "23290c7bc190def4e1ca61610992d9b7c32e33f3",
                            "lessThan": "3cd582e7d0787506990ef0180405eb6224fa90a6",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/ethernet/airoha/airoha_npu.c"
                    ],
                    "versions": [
                        {
                            "version": "6.15",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.15",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.15.8",
                            "lessThanOrEqual": "6.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.16",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.15",
                                    "versionEndExcluding": "6.15.8"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.15",
                                    "versionEndExcluding": "6.16"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/df6bf96b41e547e350667bc4c143be53646d070d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3cd582e7d0787506990ef0180405eb6224fa90a6"
                }
            ],
            "title": "net: airoha: fix potential use-after-free in airoha_npu_get()",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}