{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2023-53999",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-12-24T10:53:46.176Z",
        "datePublished": "2025-12-24T10:55:35.523Z",
        "dateUpdated": "2026-05-11T19:53:19.863Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:53:19.863Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "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": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/ethernet/mellanox/mlx5/core/en_tc.c"
                    ],
                    "versions": [
                        {
                            "version": "8300f225268be9ee2c0daf5a3f23929fcdcbf213",
                            "lessThan": "bc1918bac0f30e3f551ef5649b53062917db55fa",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8300f225268be9ee2c0daf5a3f23929fcdcbf213",
                            "lessThan": "ac5da544a3c2047cbfd715acd9cec8380d7fe5c6",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/ethernet/mellanox/mlx5/core/en_tc.c"
                    ],
                    "versions": [
                        {
                            "version": "5.18",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.18",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.4.11",
                            "lessThanOrEqual": "6.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.5",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.18",
                                    "versionEndExcluding": "6.4.11"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.18",
                                    "versionEndExcluding": "6.5"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/bc1918bac0f30e3f551ef5649b53062917db55fa"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ac5da544a3c2047cbfd715acd9cec8380d7fe5c6"
                }
            ],
            "title": "net/mlx5e: TC, Fix internal port memory leak",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}