media: v4l: async: Fix NULL pointer dereference in adding ancillary links

{
  "id": "2d8256c92ec6acff30b15f7eafd6be05933a83839eab0385c823ddfd7c05fabf",
  "url": "https://osv.dev/vulnerability/CVE-2024-43833",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "media: v4l: async: Fix NULL pointer dereference in adding ancillary links",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: media: v4l: async: Fix NULL pointer dereference in adding ancillary links In v4l2_async_create_ancillary_links(), ancillary links are created for lens and flash sub-devices. These are sub-device to sub-device links and if the async notifier is related to a V4L2 device, the source sub-device of the ancillary link is NULL, leading to a NULL pointer dereference. Check the notifier's sd field is non-NULL in v4l2_async_create_ancillary_links(). [Sakari Ailus: Reword the subject and commit messages slightly.]",
    "evidence": "osv:CVE-2024-43833",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.103",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.44",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.10.3",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2024-43833",
      "aliases": [
        "CVE-2024-43833"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "aa4faf6eb27132532d5a133d9241254c16d4bafa"
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                  "fixed": "fe0f92fd5320b393e44ca210805e653ea90cc982"
                },
                {
                  "fixed": "249212ceb4187783af3801c57b92a5a25d410621"
                },
                {
                  "fixed": "b87e28050d9b0959de24574d587825cfab2f13fb"
                },
                {
                  "fixed": "9b4667ea67854f0b116fe22ad11ef5628c5b5b5f"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-43833.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.19.0"
                },
                {
                  "fixed": "6.1.103"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.44"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.10.3"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-43833.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:34.090047938Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/249212ceb4187783af3801c57b92a5a25d410621",
        "https://git.kernel.org/stable/c/9b4667ea67854f0b116fe22ad11ef5628c5b5b5f",
        "https://git.kernel.org/stable/c/b87e28050d9b0959de24574d587825cfab2f13fb",
        "https://git.kernel.org/stable/c/fe0f92fd5320b393e44ca210805e653ea90cc982",
        "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/43xxx/CVE-2024-43833.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-43833",
        "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/2024/43xxx/CVE-2024-43833.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-43833",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 501241,
  "published_at": "2024-08-17T09:21:50.89+00:00"
}