{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-80617",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-26T14:34:25.774Z",
        "datePublished": "2026-08-28T06:48:37.508Z",
        "dateUpdated": "2026-08-29T06:21:25.270Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-29T06:21:25.270Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: airoha: fix foe_check_time allocation size\n\nfoe_check_time is declared as u16 pointer but was allocated with\nonly ppe_num_entries bytes instead of ppe_num_entries * sizeof(u16).\n\nWhen airoha_ppe_foe_verify_entry() is called with hash >= ppe_num_entries/2,\nit writes beyond the allocated buffer, causing heap buffer overflow and\npotential kernel crash."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                        "baseScore": 9.8,
                        "baseSeverity": "CRITICAL"
                    },
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "AV:N - The overflow is reached from netdev RX when hardware PPE reports HIT_UNBIND_RATE_REACHED; on Airoha EN7581/AN7583 CPE/router SoCs this path is driven by remotely sourced Ethernet WAN/LAN or WiFi traffic without local syscall access.\nAC:L - An attacker controls packet 5-tuples and send rate to populate FOE entries and force CPU-reason 0x0f; roughly half of valid hash indices (hash >= ppe_num_entries/2) deterministically hit the undersized buffer, with only a 100ms per-hash software throttle.\nPR:N - Exploitation requires only the ability to send network packets to or through the device's registered interfaces; no local account, capability, namespace admin rights, or authentication on the RX/offload path.\nUI:N - No cooperative victim action is needed beyond normal always-on routing/bridging of attacker-supplied packets through the Airoha Ethernet or mt76 WiFi RX handlers.\nS:U - Impact is confined to kernel heap memory corruption and privilege escalation within the host running the Airoha driver; it does not cross a VM, hypervisor, or IOMMU security boundary.\nC:H - airoha_ppe_check_skb() performs an out-of-bounds read of ppe->foe_check_time[hash] before writing a u16 timestamp, and the adjacent heap overflow can expose or corrupt neighboring kernel objects.\nI:H - The same path writes a u16 beyond the allocated foe_check_time buffer, giving a kernel heap out-of-bounds write that can be leveraged for further memory corruption or control-flow manipulation.\nA:H - The fix commit explicitly warns of heap buffer overflow and potential kernel crash; corrupted adjacent heap metadata or pointers from the OOB access can trigger oops, panic, or loss of network availability."
                        }
                    ]
                }
            ],
            "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_ppe.c"
                    ],
                    "versions": [
                        {
                            "version": "56b99327a451917f1c17f85fc33ea8293c08a9ee",
                            "lessThan": "112b5eff24e044561ee9599a0d34e0fcea1df4e0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6d5b601d52a27aafff555b480e538507901c672c",
                            "lessThan": "9f7cd1e26d2f1766438edc9b9254f2c618f9ae98",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6d5b601d52a27aafff555b480e538507901c672c",
                            "lessThan": "5c121ee635680c93d7074becf14cfbaac140f80d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6.18.33",
                            "lessThan": "6.18.40",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "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_ppe.c"
                    ],
                    "versions": [
                        {
                            "version": "6.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.40",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.5",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "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": "6.18.33",
                                    "versionEndExcluding": "6.18.40"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.19",
                                    "versionEndExcluding": "7.1.5"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.19",
                                    "versionEndExcluding": "7.2"
                                }
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/112b5eff24e044561ee9599a0d34e0fcea1df4e0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9f7cd1e26d2f1766438edc9b9254f2c618f9ae98"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5c121ee635680c93d7074becf14cfbaac140f80d"
                }
            ],
            "title": "net: airoha: fix foe_check_time allocation size",
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}