{
  "cveId": "CVE-2026-98810",
  "url": "https://patchblox.com/security/cve/CVE-2026-98810",
  "summary": "CVE-2026-98810 is fixed in linux on 1 platform by DEBIAN-CVE-2026-98810 (version 7.2.10-1), released October 19, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "wifi: mac80211: fix slab-out-of-bounds read in ieee80211_monitor_select_queue()",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  wifi: mac80211: fix slab-out-of-bounds read in ieee80211_monitor_select_queue()  ieee80211_monitor_select_queue() validates the skb length using skb-\u003Elen before dereferencing pointers into skb-\u003Edata to access the 802.11 header. However, skb-\u003Elen includes data in both the linear head buffer and non-linear fragments/pages. When AF_PACKET sends a packet large enough to become non-linear, the 802.11 header at skb-\u003Edata \u002B len_rthdr may extend past the linear head buffer even though skb-\u003Elen appears sufficient.  This leads to a slab-out-of-bounds read when accessing hdr-\u003Eframe_control, as the kernel reads beyond the allocated skb head buffer:    BUG: KASAN: slab-out-of-bounds in ieee80211_monitor_select_queue\u002B0x1ed/0x220  syzbot has hit the same issues.  Fix this by checking skb_headlen(skb) (which gives the length of the linear data region) instead of skb-\u003Elen before dereferencing skb-\u003Edata pointers. This ensures the required bytes are actually present in the linear portion of the skb.  Apply the same fix to ieee80211_validate_radiotap_len() which has the same class of bug: it uses skb-\u003Elen to validate accesses to skb-\u003Edata, and to the corresponding checks in ieee80211_monitor_start_xmit(): for drivers advertising NETIF_F_SG the skb is not linearized before ndo_start_xmit, so the 802.11 header can be read past the linear buffer there as well.",
  "published": "2026-10-18T16:17:35Z",
  "severity": "Moderate",
  "cvss": 5.1,
  "epss": 0.00162,
  "epssPercentile": 0.05453,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-98810",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.10-1",
      "fix": "DEBIAN-CVE-2026-98810",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98810",
      "released": "2026-10-19T16:27:52Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T13:31:49Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}