netdevsim: Fix memory leak of nsim_dev->fa_cookie

{
  "id": "ad768919939799321d8567e4f2413f7c45d0053fb421698d23e75ee85ecb43e8",
  "url": "https://osv.dev/vulnerability/CVE-2022-49803",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "netdevsim: Fix memory leak of nsim_dev->fa_cookie",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: netdevsim: Fix memory leak of nsim_dev->fa_cookie kmemleak reports this issue: unreferenced object 0xffff8881bac872d0 (size 8): comm \"sh\", pid 58603, jiffies 4481524462 (age 68.065s) hex dump (first 8 bytes): 04 00 00 00 de ad be ef ........ backtrace: [<00000000c80b8577>] __kmalloc+0x49/0x150 [<000000005292b8c6>] nsim_dev_trap_fa_cookie_write+0xc1/0x210 [netdevsim] [<0000000093d78e77>] full_proxy_write+0xf3/0x180 [<000000005a662c16>] vfs_write+0x1c5/0xaf0 [<000000007aabf84a>] ksys_write+0xed/0x1c0 [<000000005f1d2e47>] do_syscall_64+0x3b/0x90 [<000000006001c6ec>] entry_SYSCALL_64_after_hwframe+0x63/0xcd The issue occurs in the following scenarios: nsim_dev_trap_fa_cookie_write() kmalloc() fa_cookie nsim_dev->fa_cookie = fa_cookie .. nsim_drv_remove() The fa_cookie allocked in nsim_dev_trap_fa_cookie_write() is not freed. To fix, add kfree(nsim_dev->fa_cookie) to nsim_drv_remove().",
    "evidence": "osv:CVE-2022-49803",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.260",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.209",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.0.10",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2022-49803",
      "aliases": [
        "CVE-2022-49803"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "d3cbb907ae57fe5da314b51d949b617b538bdeae"
                },
                {
                  "fixed": "7d79725a7073d86b9185f87718e22f3d65115801"
                },
                {
                  "fixed": "6d463ddd0107d4188229d996dcdd45c99bad8af7"
                },
                {
                  "fixed": "207edad5717e0a5709ce8467f0eff41c607835c9"
                },
                {
                  "fixed": "064bc7312bd09a48798418663090be0c776183db"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49803.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.7.0"
                },
                {
                  "fixed": "5.10.260"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.209"
                }
              ]
            },
            {
              "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-2022-49803.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:26.497675146Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/064bc7312bd09a48798418663090be0c776183db",
        "https://git.kernel.org/stable/c/207edad5717e0a5709ce8467f0eff41c607835c9",
        "https://git.kernel.org/stable/c/6d463ddd0107d4188229d996dcdd45c99bad8af7",
        "https://git.kernel.org/stable/c/7d79725a7073d86b9185f87718e22f3d65115801",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49803.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-49803",
        "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-2022-49803.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-49803",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 492736,
  "published_at": "2025-05-01T14:09:30.971+00:00"
}