net: ethernet: mtk_wed: fix use-after-free panic in mtk_wed_setup_tc_block_cb()

{
  "id": "38b2c133441d3c04c795fe43b474a02f4f63e9ae9e3047fbde01cfbc01292e88",
  "url": "https://osv.dev/vulnerability/CVE-2024-44997",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "net: ethernet: mtk_wed: fix use-after-free panic in mtk_wed_setup_tc_block_cb()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: net: ethernet: mtk_wed: fix use-after-free panic in mtk_wed_setup_tc_block_cb() When there are multiple ap interfaces on one band and with WED on, turning the interface down will cause a kernel panic on MT798X. Previously, cb_priv was freed in mtk_wed_setup_tc_block() without marking NULL,and mtk_wed_setup_tc_block_cb() didn't check the value, too. Assign NULL after free cb_priv in mtk_wed_setup_tc_block() and check NULL in mtk_wed_setup_tc_block_cb(). ---------- Unable to handle kernel paging request at virtual address 0072460bca32b4f5 Call trace: mtk_wed_setup_tc_block_cb+0x4/0x38 0xffffffc0794084bc tcf_block_playback_offloads+0x70/0x1e8 tcf_block_unbind+0x6c/0xc8 ... ---------",
    "evidence": "osv:CVE-2024-44997",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.6.48",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.10.7",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2024-44997",
      "aliases": [
        "CVE-2024-44997"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "799684448e3e1f57257a6155541e53510488f67b"
                },
                {
                  "fixed": "326a89321f9d5fe399fe6f9ff7c0fc766582a6a0"
                },
                {
                  "fixed": "b453a4bbda03aa8741279c360ac82d1c3ac33548"
                },
                {
                  "fixed": "db1b4bedb9b97c6d34b03d03815147c04fffe8b4"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-44997.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.48"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.10.7"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-44997.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.115385041Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/326a89321f9d5fe399fe6f9ff7c0fc766582a6a0",
        "https://git.kernel.org/stable/c/b453a4bbda03aa8741279c360ac82d1c3ac33548",
        "https://git.kernel.org/stable/c/db1b4bedb9b97c6d34b03d03815147c04fffe8b4",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/44xxx/CVE-2024-44997.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-44997",
        "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/2024/44xxx/CVE-2024-44997.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-44997",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 517285,
  "published_at": "2024-09-04T19:54:42.181+00:00"
}