{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2023-53999",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2023-53999"
  ],
  "published": "2025-12-24T10:57:20Z",
  "summary": "net/mlx5e: TC, Fix internal port memory leak",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: TC, Fix internal port memory leak\n\nThe flow rule can be splited, and the extra post_act rules are added\nto post_act table. It's possible to trigger memleak when the rule\nforwards packets from internal port and over tunnel, in the case that,\nfor example, CT 'new' state offload is allowed. As int_port object is\nassigned to the flow attribute of post_act rule, and its refcnt is\nincremented by mlx5e_tc_int_port_get(), but mlx5e_tc_int_port_put() is\nnot called, the refcnt is never decremented, then int_port is never\nfreed.\n\nThe kmemleak reports the following error:\nunreferenced object 0xffff888128204b80 (size 64):\n  comm \"handler20\", pid 50121, jiffies 4296973009 (age 642.932s)\n  hex dump (first 32 bytes):\n    01 00 00 00 19 00 00 00 03 f0 00 00 04 00 00 00  ................\n    98 77 67 41 81 88 ff ff 98 77 67 41 81 88 ff ff  .wgA.....wgA....\n  backtrace:\n    [<00000000e992680d>] kmalloc_trace+0x27/0x120\n    [<000000009e945a98>] mlx5e_tc_int_port_get+0x3f3/0xe20 [mlx5_core]\n    [<0000000035a537f0>] mlx5e_tc_add_fdb_flow+0x473/0xcf0 [mlx5_core]\n    [<0000000070c2cec6>] __mlx5e_add_fdb_flow+0x7cf/0xe90 [mlx5_core]\n    [<000000005cc84048>] mlx5e_configure_flower+0xd40/0x4c40 [mlx5_core]\n    [<000000004f8a2031>] mlx5e_rep_indr_offload.isra.0+0x10e/0x1c0 [mlx5_core]\n    [<000000007df797dc>] mlx5e_rep_indr_setup_tc_cb+0x90/0x130 [mlx5_core]\n    [<0000000016c15cc3>] tc_setup_cb_add+0x1cf/0x410\n    [<00000000a63305b4>] fl_hw_replace_filter+0x38f/0x670 [cls_flower]\n    [<000000008bc9e77c>] fl_change+0x1fd5/0x4430 [cls_flower]\n    [<00000000e7f766e4>] tc_new_tfilter+0x867/0x2010\n    [<00000000e101c0ef>] rtnetlink_rcv_msg+0x6fc/0x9f0\n    [<00000000e1111d44>] netlink_rcv_skb+0x12c/0x360\n    [<0000000082dd6c8b>] netlink_unicast+0x438/0x710\n    [<00000000fc568f70>] netlink_sendmsg+0x794/0xc50\n    [<0000000016e92590>] sock_sendmsg+0xc5/0x190\n\nSo fix this by moving int_port cleanup code to the flow attribute\nfree helper, which is used by all the attribute free cases.",
  "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-2023-53999"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9079ef5fb26ff38ced50cc15199ce56a009b8605"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/bc1918bac0f30e3f551ef5649b53062917db55fa"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ac5da544a3c2047cbfd715acd9cec8380d7fe5c6"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-10-03T11:04:09Z"
  }
}