net: sched: fix memory leak in tcindex_set_parms

{
  "id": "a450006d381cf32f26864813786a912a06cef53b35b2e0f1493580accfba734a",
  "url": "https://osv.dev/vulnerability/CVE-2022-50396",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "net: sched: fix memory leak in tcindex_set_parms",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: net: sched: fix memory leak in tcindex_set_parms Syzkaller reports a memory leak as follows: ==================================== BUG: memory leak unreferenced object 0xffff88810c287f00 (size 256): comm \"syz-executor105\", pid 3600, jiffies 4294943292 (age 12.990s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [] kmalloc_trace+0x20/0x90 mm/slab_common.c:1046 [] kmalloc include/linux/slab.h:576 [inline] [] kmalloc_array include/linux/slab.h:627 [inline] [] kcalloc include/linux/slab.h:659 [inline] [] tcf_exts_init include/net/pkt_cls.h:250 [inline] [] tcindex_set_parms+0xa7/0xbe0 net/sched/cls_tcindex.c:342 [] tcindex_change+0xdf/0x120 net/sched/cls_tcindex.c:553 [] tc_new_tfilter+0x4f2/0x1100 net/sched/cls_api.c:2147 [] rtnetlink_rcv_msg+0x4dc/0x5d0 net/core/rtnetlink.c:6082 [] netlink_rcv_skb+0x87/0x1d0 net/netlink/af_netlink.c:2540 [] netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] [] netlink_unicast+0x397/0x4c0 net/netlink/af_netlink.c:1345 [] netlink_sendmsg+0x396/0x710 net/netlink/af_netlink.c:1921 [] sock_sendmsg_nosec net/socket.c:714 [inline] [] sock_sendmsg+0x56/0x80 net/socket.c:734 [] ____sys_sendmsg+0x178/0x410 net/socket.c:2482 [] ___sys_sendmsg+0xa8/0x110 net/socket.c:2536 [] __sys_sendmmsg+0x105/0x330 net/socket.c:2622 [] __do_sys_sendmmsg net/socket.c:2651 [inl",
    "evidence": "osv:CVE-2022-50396",
    "products": [
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        "name": {
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        "prerequisites": [],
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    "severity": "medium",
    "structured": {
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      "aliases": [
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      "metrics": [
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      "modified": "2026-10-28T02:30:39.387102475Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/01d0d2b8b4e3cf2110baba9371c0c3d04ad5c77b",
        "https://git.kernel.org/stable/c/18c3fa7a7fdbb4d21dafc8a7710ae2c1680930f6",
        "https://git.kernel.org/stable/c/372ae77cf11d11fb118cbe2d37def9dd5f826abd",
        "https://git.kernel.org/stable/c/399ab7fe0fa0d846881685fd4e57e9a8ef7559f7",
        "https://git.kernel.org/stable/c/3abebc503a5148072052c229c6b04b329a420ecd",
        "https://git.kernel.org/stable/c/53af9c793f644d5841d84d8e0ad83bd7ab47f3e0",
        "https://git.kernel.org/stable/c/55ac68b53f1cea1926ee2313afc5d66b91daad71",
        "https://git.kernel.org/stable/c/6c55953e232ea668731091d111066521f3b7719b",
        "https://git.kernel.org/stable/c/7a6fb69bbcb21e9ce13bdf18c008c268874f0480",
        "https://git.kernel.org/stable/c/7c183dc0af472dec33d2c0786a5e356baa8cad19",
        "https://git.kernel.org/stable/c/b314f6c3512108d7a656c5caf07c82d1bbbdc0f1",
        "https://git.kernel.org/stable/c/c4de6057e7c6654983acb63d939d26ac0d7bbf39",
        "https://git.kernel.org/stable/c/facc4405e8b7407e03216207b1d1d640127de0c8",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50396.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-50396",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
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        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50396.json"
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        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 506426,
  "published_at": "2025-09-18T13:33:14.45+00:00"
}