{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "5d44fe7c9808c56e136e59147bd932f5491520f1"
            },
            {
              "fixed": "3a96bb65b4b820d8b41fa155781ec1c29e3479d4"
            },
            {
              "fixed": "59e1f2a0242232b4a3af144ae317d3913fc09046"
            },
            {
              "fixed": "1ae85bb34fe3510659b86d6a5f8036dd498233f8"
            },
            {
              "fixed": "6f6368b20f8c9481fa7ba7b672dcb3c9f36b2695"
            },
            {
              "fixed": "b5b1234bbfa25537fb9a5c0d62c328ed4547f721"
            },
            {
              "fixed": "13edd8ea7ff2ce6a964b290ef2034cd8cbed96c7"
            },
            {
              "fixed": "3dc723ac78a6e4fa0fd49e27e487ed319da40a9f"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.7.0"
            },
            {
              "fixed": "5.10.271"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.222"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.189"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.158"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.111"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.53"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98887.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO\n\nhwsim_tx_info_frame_received_nl() casts the HWSIM_ATTR_TX_INFO payload\nto a struct hwsim_tx_rate * and unconditionally reads\nIEEE80211_TX_MAX_RATES entries (8 bytes) from it. The policy only bounds\nthe attribute from above (NLA_BINARY .len is a maximum) and the op sets\nGENL_DONT_VALIDATE_STRICT, so a short or zero-length attribute is\naccepted and the loop reads past the payload.\n\nRequire the exact length in the policy, so a malformed attribute is\nrejected before the handler runs.",
  "id": "CVE-2026-98887",
  "modified": "2026-10-28T02:30:45.962222304Z",
  "published": "2026-10-23T11:37:44.605Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/13edd8ea7ff2ce6a964b290ef2034cd8cbed96c7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1ae85bb34fe3510659b86d6a5f8036dd498233f8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3a96bb65b4b820d8b41fa155781ec1c29e3479d4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3dc723ac78a6e4fa0fd49e27e487ed319da40a9f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/59e1f2a0242232b4a3af144ae317d3913fc09046"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6f6368b20f8c9481fa7ba7b672dcb3c9f36b2695"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b5b1234bbfa25537fb9a5c0d62c328ed4547f721"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98887.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98887"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.2",
  "summary": "wifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO"
}