{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "3468e1e0c639032a603450f0830ccabfa76f5806"
            },
            {
              "fixed": "2fb64f94f9afb774f2fa0c7835727d7a67f89f07"
            },
            {
              "fixed": "d71c841be5d9e586ee7f36c0dc8ed4db0d9a1349"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.4.0"
            },
            {
              "fixed": "7.0.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64117.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: capture fast-RX rate before mesh reuses skb-\u003ecb\n\nieee80211_invoke_fast_rx() reads RX status through\nIEEE80211_SKB_RXCB(skb), which aliases the same skb-\u003ecb storage\nthat ieee80211_rx_mesh_data() reuses as IEEE80211_TX_INFO.  In the\nunicast forward path, mesh_data does:\n\n\tinfo = IEEE80211_SKB_CB(fwd_skb);\n\tmemset(info, 0, sizeof(*info));\n\non the same skb the caller still names via rx-\u003eskb, then either\nqueues the skb for TX (success) or kfree_skb()'s it (no-route)\nbefore returning RX_QUEUED.  The caller's RX_QUEUED arm then\ncalls sta_stats_encode_rate(status) on memory that is either\nzeroed (success path) or freed (no-route path).  The latter is\nKASAN slab-use-after-free in ieee80211_prepare_and_rx_handle.\n\nFix by encoding the rate from status before invoking\nieee80211_rx_mesh_data(), so the RX_QUEUED arm consumes a value\ncaptured while status was still backed by valid memory.",
  "id": "CVE-2026-64117",
  "modified": "2026-07-22T05:29:39.441266528Z",
  "published": "2026-07-19T15:40:16.941Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2fb64f94f9afb774f2fa0c7835727d7a67f89f07"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d71c841be5d9e586ee7f36c0dc8ed4db0d9a1349"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64117.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64117"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "wifi: mac80211: capture fast-RX rate before mesh reuses skb-\u003ecb"
}