{
  "cveId": "CVE-2026-98555",
  "url": "https://patchblox.com/security/cve/CVE-2026-98555",
  "summary": "CVE-2026-98555 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-98555, released October 19, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "llc: fix skb UAF and leaks on llc_mac_hdr_init() failure",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  llc: fix skb UAF and leaks on llc_mac_hdr_init() failure  In llc_conn_ac_resend_i_xxx_x_set_0_or_send_rr(), if llc_mac_hdr_init() fails, kfree_skb(skb) is called instead of kfree_skb(nskb). This leaks the newly allocated nskb, reads from the freed skb via LLC_I_GET_NR(pdu), and double-frees skb when llc_conn_state_process() drops its reference.  In llc_sap_action_send_xid_r() and llc_sap_action_send_test_r(), nskb is leaked if llc_mac_hdr_init() returns an error.  Free nskb in all three error paths.",
  "published": "2026-10-18T16:17:07Z",
  "severity": "Moderate",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.0031,
  "epssPercentile": 0.23975,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-98555",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.190-1",
      "fix": "DEBIAN-CVE-2026-98555",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98555",
      "released": "2026-10-19T16:27:52Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.113-1",
      "fix": "DEBIAN-CVE-2026-98555",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98555",
      "released": "2026-10-19T16:27:52Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.9-1",
      "fix": "DEBIAN-CVE-2026-98555",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98555",
      "released": "2026-10-19T16:27:52Z"
    },
    {
      "platform": "linux",
      "product": "linux-6.12",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.12.113-1~deb12u1",
      "fix": "DEBIAN-CVE-2026-98555",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98555",
      "released": "2026-10-19T16:27:52Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}