{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/airoha/airoha_ppe.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "112b5eff24e044561ee9599a0d34e0fcea1df4e0",
              "status": "affected",
              "version": "56b99327a451917f1c17f85fc33ea8293c08a9ee",
              "versionType": "git"
            },
            {
              "lessThan": "9f7cd1e26d2f1766438edc9b9254f2c618f9ae98",
              "status": "affected",
              "version": "6d5b601d52a27aafff555b480e538507901c672c",
              "versionType": "git"
            },
            {
              "lessThan": "5c121ee635680c93d7074becf14cfbaac140f80d",
              "status": "affected",
              "version": "6d5b601d52a27aafff555b480e538507901c672c",
              "versionType": "git"
            },
            {
              "lessThan": "6.18.40",
              "status": "affected",
              "version": "6.18.33",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/airoha/airoha_ppe.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.19"
            },
            {
              "lessThan": "6.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.40",
                  "versionStartIncluding": "6.18.33",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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 \u003e= ppe_num_entries/2,\nit writes beyond the allocated buffer, causing heap buffer overflow and\npotential kernel crash."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "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 \u003e= 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\u0027s 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-\u003efoe_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."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-29T06:21:25.270Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "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",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80617",
    "datePublished": "2026-08-28T06:48:37.508Z",
    "dateReserved": "2026-08-26T14:34:25.774Z",
    "dateUpdated": "2026-08-29T06:21:25.270Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}