{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-98555",
  "modified": "2026-10-19T04:30:01Z",
  "upstream": [
    "CVE-2026-98555"
  ],
  "published": "2026-10-18T15:22:13Z",
  "summary": "llc: fix skb UAF and leaks on llc_mac_hdr_init() failure",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nllc: fix skb UAF and leaks on llc_mac_hdr_init() failure\n\nIn llc_conn_ac_resend_i_xxx_x_set_0_or_send_rr(), if llc_mac_hdr_init()\nfails, kfree_skb(skb) is called instead of kfree_skb(nskb). This leaks\nthe newly allocated nskb, reads from the freed skb via LLC_I_GET_NR(pdu),\nand double-frees skb when llc_conn_state_process() drops its reference.\n\nIn llc_sap_action_send_xid_r() and llc_sap_action_send_test_r(), nskb is\nleaked if llc_mac_hdr_init() returns an error.\n\nFree nskb in all three error paths.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.189",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-98555"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/fec0fe6838a7f45175667701fb51abb23a6ffb1e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b859ba18b5a1067f71db5618c6a4a70d55fa308b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8b855b645841b5a04e20339a22bb6d593c9b790d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d360b31f1a3666579422872aa7d1a751e20b76f9"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/060f827aa3dc47939ee306da715cd6700d129616"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/41dcae82bece9f106b4dff0ee777bba8d157c8a8"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/cb3528ad8bb46fa6252f5d14ced7febddc18515d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/72f9dd522f8d6c5a00be9695c7bb74631eb5069e"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-10-18T15:22:13Z"
  }
}