net: hsr: avoid possible NULL deref in skb_clone()

{
  "id": "88e496ac21fb2c7131320fbf7eb9d8e4f39755d10f6abcd452053dc0a5da474b",
  "url": "https://osv.dev/vulnerability/CVE-2022-50817",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "net: hsr: avoid possible NULL deref in skb_clone()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: net: hsr: avoid possible NULL deref in skb_clone() syzbot got a crash [1] in skb_clone(), caused by a bug in hsr_get_untagged_frame(). When/if create_stripped_skb_hsr() returns NULL, we must not attempt to call skb_clone(). While we are at it, replace a WARN_ONCE() by netdev_warn_once(). [1] general protection fault, probably for non-canonical address 0xdffffc000000000f: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000078-0x000000000000007f] CPU: 1 PID: 754 Comm: syz-executor.0 Not tainted 6.0.0-syzkaller-02734-g0326074ff465 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 RIP: 0010:skb_clone+0x108/0x3c0 net/core/skbuff.c:1641 Code: 93 02 00 00 49 83 7c 24 28 00 0f 85 e9 00 00 00 e8 5d 4a 29 fa 4c 8d 75 7e 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <0f> b6 04 02 4c 89 f2 83 e2 07 38 d0 7f 08 84 c0 0f 85 9e 01 00 00 RSP: 0018:ffffc90003ccf4e0 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: ffffc90003ccf5f8 RCX: ffffc9000c24b000 RDX: 000000000000000f RSI: ffffffff8751cb13 RDI: 0000000000000000 RBP: 0000000000000000 R08: 00000000000000f0 R09: 0000000000000140 R10: fffffbfff181d972 R11: 0000000000000000 R12: ffff888161fc3640 R13: 0000000000000a20 R14: 000000000000007e R15: ffffffff8dc5f620 FS: 00007feb621e4700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007feb621e3ff8 CR3: ",
    "evidence": "osv:CVE-2022-50817",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.152",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.76",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.0.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2022-50817",
      "aliases": [
        "CVE-2022-50817"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "f266a683a4804dc499efc6c2206ef68efed029d0"
                },
                {
                  "fixed": "ff7ba766758313129794f150bbc4d351b5e17a53"
                },
                {
                  "fixed": "35ece858660eae13ee0242496a1956c39d29418e"
                },
                {
                  "fixed": "c46f2e0fcd1ecfc6046e5cf785ff89f0572f94e4"
                },
                {
                  "fixed": "d8b57135fd9ffe9a5b445350a686442a531c5339"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50817.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "3.17.0"
                },
                {
                  "fixed": "5.10.152"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.76"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.0.6"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50817.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:23.558856001Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/35ece858660eae13ee0242496a1956c39d29418e",
        "https://git.kernel.org/stable/c/c46f2e0fcd1ecfc6046e5cf785ff89f0572f94e4",
        "https://git.kernel.org/stable/c/d8b57135fd9ffe9a5b445350a686442a531c5339",
        "https://git.kernel.org/stable/c/ff7ba766758313129794f150bbc4d351b5e17a53",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50817.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-50817",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50817.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-50817",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 490183,
  "published_at": "2025-12-30T12:08:32.866+00:00"
}