Bluetooth: btusb: Add date->evt_skb is NULL check

{
  "id": "ce645419e4dde29b96e694d41b91e3a2810ec8479fab5dfebc3944f2e43df47f",
  "url": "https://osv.dev/vulnerability/CVE-2023-52833",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Bluetooth: btusb: Add date->evt_skb is NULL check",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btusb: Add date->evt_skb is NULL check fix crash because of null pointers [ 6104.969662] BUG: kernel NULL pointer dereference, address: 00000000000000c8 [ 6104.969667] #PF: supervisor read access in kernel mode [ 6104.969668] #PF: error_code(0x0000) - not-present page [ 6104.969670] PGD 0 P4D 0 [ 6104.969673] Oops: 0000 [#1] SMP NOPTI [ 6104.969684] RIP: 0010:btusb_mtk_hci_wmt_sync+0x144/0x220 [btusb] [ 6104.969688] RSP: 0018:ffffb8d681533d48 EFLAGS: 00010246 [ 6104.969689] RAX: 0000000000000000 RBX: ffff8ad560bb2000 RCX: 0000000000000006 [ 6104.969691] RDX: 0000000000000000 RSI: ffffb8d681533d08 RDI: 0000000000000000 [ 6104.969692] RBP: ffffb8d681533d70 R08: 0000000000000001 R09: 0000000000000001 [ 6104.969694] R10: 0000000000000001 R11: 00000000fa83b2da R12: ffff8ad461d1d7c0 [ 6104.969695] R13: 0000000000000000 R14: ffff8ad459618c18 R15: ffffb8d681533d90 [ 6104.969697] FS: 00007f5a1cab9d40(0000) GS:ffff8ad578200000(0000) knlGS:00000 [ 6104.969699] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 6104.969700] CR2: 00000000000000c8 CR3: 000000018620c001 CR4: 0000000000760ef0 [ 6104.969701] PKRU: 55555554 [ 6104.969702] Call Trace: [ 6104.969708] btusb_mtk_shutdown+0x44/0x80 [btusb] [ 6104.969732] hci_dev_do_close+0x470/0x5c0 [bluetooth] [ 6104.969748] hci_rfkill_set_block+0x56/0xa0 [bluetooth] [ 6104.969753] rfkill_set_block+0x92/0x160 [ 6104.969755] rfkill_fop_write+0x136/0x1e0 [ 6104.969759] __",
    "evidence": "osv:CVE-2023-52833",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.202",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.140",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.64",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.5.13",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.3",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2023-52833",
      "aliases": [
        "CVE-2023-52833"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "a1c49c434e15050b5dafe3b6f5cc732d4f02d657"
                },
                {
                  "fixed": "9f8e4d1a4ca1179aaeb43f91f3e2a386e7e616b3"
                },
                {
                  "fixed": "f9de14bde56dcbb0765284c6dfc35842b021733c"
                },
                {
                  "fixed": "a556f2ef556a04790f67f2fa272f1a77336d15a0"
                },
                {
                  "fixed": "0048ddf045bddc4dacb3e783fd869a2f8fb5be30"
                },
                {
                  "fixed": "13b1ebad4c175e6a9b0748acbf133c21a15d282a"
                },
                {
                  "fixed": "624820f7c8826dd010e8b1963303c145f99816e9"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52833.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.3.0"
                },
                {
                  "fixed": "5.10.202"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.140"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.64"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.5.13"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.6.0"
                },
                {
                  "fixed": "6.6.3"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52833.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:42.051468338Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/0048ddf045bddc4dacb3e783fd869a2f8fb5be30",
        "https://git.kernel.org/stable/c/13b1ebad4c175e6a9b0748acbf133c21a15d282a",
        "https://git.kernel.org/stable/c/624820f7c8826dd010e8b1963303c145f99816e9",
        "https://git.kernel.org/stable/c/9f8e4d1a4ca1179aaeb43f91f3e2a386e7e616b3",
        "https://git.kernel.org/stable/c/a556f2ef556a04790f67f2fa272f1a77336d15a0",
        "https://git.kernel.org/stable/c/f9de14bde56dcbb0765284c6dfc35842b021733c",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52833.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-52833",
        "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/2023/52xxx/CVE-2023-52833.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-52833",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 509267,
  "published_at": "2024-05-21T15:31:34.915+00:00"
}