drm/drv: Fix potential memory leak in drm_dev_init()

{
  "id": "08a1fa3fbd9896311a1d895a6fe69d46f2cbf56b324704e608e7e677512ff28b",
  "url": "https://osv.dev/vulnerability/CVE-2022-49830",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "drm/drv: Fix potential memory leak in drm_dev_init()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: drm/drv: Fix potential memory leak in drm_dev_init() drm_dev_init() will add drm_dev_init_release() as a callback. When drmm_add_action() failed, the release function won't be added. As the result, the ref cnt added by device_get() in drm_dev_init() won't be put by drm_dev_init_release(), which leads to the memleak. Use drmm_add_action_or_reset() instead of drmm_add_action() to prevent memleak. unreferenced object 0xffff88810bc0c800 (size 2048): comm \"modprobe\", pid 8322, jiffies 4305809845 (age 15.292s) hex dump (first 32 bytes): e8 cc c0 0b 81 88 ff ff ff ff ff ff 00 00 00 00 ................ 20 24 3c 0c 81 88 ff ff 18 c8 c0 0b 81 88 ff ff $<............. backtrace: [<000000007251f72d>] __kmalloc+0x4b/0x1c0 [<0000000045f21f26>] platform_device_alloc+0x2d/0xe0 [<000000004452a479>] platform_device_register_full+0x24/0x1c0 [<0000000089f4ea61>] 0xffffffffa0736051 [<00000000235b2441>] do_one_initcall+0x7a/0x380 [<0000000001a4a177>] do_init_module+0x5c/0x230 [<000000002bf8a8e2>] load_module+0x227d/0x2420 [<00000000637d6d0a>] __do_sys_finit_module+0xd5/0x140 [<00000000c99fc324>] do_syscall_64+0x3f/0x90 [<000000004d85aa77>] entry_SYSCALL_64_after_hwframe+0x63/0xcd",
    "evidence": "osv:CVE-2022-49830",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.156",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.80",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.0.10",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2022-49830",
      "aliases": [
        "CVE-2022-49830"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "2cbf7fc6718b9443ecd6261308c6348d8ffcccae"
                },
                {
                  "fixed": "c47a823ea186263ab69cfb665327b7f72cb5e779"
                },
                {
                  "fixed": "07e56de8766fe5be67252596244b84ac0ec0de91"
                },
                {
                  "fixed": "bd8d1335e6e70a396094ef98913b513140c0b86b"
                },
                {
                  "fixed": "ff963634f7b2e0dc011349abb3fb81a0d074f443"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49830.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.8.0"
                },
                {
                  "fixed": "5.10.156"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.80"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.0.10"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49830.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:26.672269986Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/07e56de8766fe5be67252596244b84ac0ec0de91",
        "https://git.kernel.org/stable/c/bd8d1335e6e70a396094ef98913b513140c0b86b",
        "https://git.kernel.org/stable/c/c47a823ea186263ab69cfb665327b7f72cb5e779",
        "https://git.kernel.org/stable/c/ff963634f7b2e0dc011349abb3fb81a0d074f443",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49830.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-49830",
        "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/2022/49xxx/CVE-2022-49830.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-49830",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 493139,
  "published_at": "2025-05-01T14:09:48.918+00:00"
}