{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2022-50271",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-50271",
    "idYear": 2022,
    "status": "PUBLISHED",
    "publishedAt": "2025-09-15T14:21:07.563Z",
    "updatedAt": "2026-05-11T19:16:06.028Z",
    "importedAt": "2026-10-24T01:56:49.724Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "vhost/vsock: Use kvmalloc/kvfree for larger packets.",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nvhost/vsock: Use kvmalloc/kvfree for larger packets.\n\nWhen copying a large file over sftp over vsock, data size is usually 32kB,\nand kmalloc seems to fail to try to allocate 32 32kB regions.\n\n vhost-5837: page allocation failure: order:4, mode:0x24040c0\n Call Trace:\n  [<ffffffffb6a0df64>] dump_stack+0x97/0xdb\n  [<ffffffffb68d6aed>] warn_alloc_failed+0x10f/0x138\n  [<ffffffffb68d868a>] ? __alloc_pages_direct_compact+0x38/0xc8\n  [<ffffffffb664619f>] __alloc_pages_nodemask+0x84c/0x90d\n  [<ffffffffb6646e56>] alloc_kmem_pages+0x17/0x19\n  [<ffffffffb6653a26>] kmalloc_order_trace+0x2b/0xdb\n  [<ffffffffb66682f3>] __kmalloc+0x177/0x1f7\n  [<ffffffffb66e0d94>] ? copy_from_iter+0x8d/0x31d\n  [<ffffffffc0689ab7>] vhost_vsock_handle_tx_kick+0x1fa/0x301 [vhost_vsock]\n  [<ffffffffc06828d9>] vhost_worker+0xf7/0x157 [vhost]\n  [<ffffffffb683ddce>] kthread+0xfd/0x105\n  [<ffffffffc06827e2>] ? vhost_dev_set_owner+0x22e/0x22e [vhost]\n  [<ffffffffb683dcd1>] ? flush_kthread_worker+0xf3/0xf3\n  [<ffffffffb6eb332e>] ret_from_fork+0x4e/0x80\n  [<ffffffffb683dcd1>] ? flush_kthread_worker+0xf3/0xf3\n\nWork around by doing kvmalloc instead.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "433fc58e6bf2c8bd97e57153ed28e64fd78207b8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0d720c3f0a03e97867deab7e480ba3d3e19837ba"
            },
            {
              "version": "433fc58e6bf2c8bd97e57153ed28e64fd78207b8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7aac8c63f604e6a6a46560c0f0188cd0332cf320"
            },
            {
              "version": "433fc58e6bf2c8bd97e57153ed28e64fd78207b8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e6d0152c95108651f1880c1ddfab47cb9e3e62d0"
            },
            {
              "version": "433fc58e6bf2c8bd97e57153ed28e64fd78207b8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b4a5905fd2ef841cd61e969ea692c213c2e5c1f7"
            },
            {
              "version": "433fc58e6bf2c8bd97e57153ed28e64fd78207b8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e28a4e7f0296824c61a81e7fd54ab48bad3e75ad"
            },
            {
              "version": "433fc58e6bf2c8bd97e57153ed28e64fd78207b8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a99fc6d818161d6f1ff3307de8bf5237f6cc34d8"
            },
            {
              "version": "433fc58e6bf2c8bd97e57153ed28e64fd78207b8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "36c9f340c60413e28f980c0224c4e9d35851526b"
            },
            {
              "version": "433fc58e6bf2c8bd97e57153ed28e64fd78207b8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0e3f72931fc47bb81686020cc643cde5d9cd0bb8"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.8",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.8"
            },
            {
              "version": "4.14.296",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "version": "4.19.262",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.220",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.150",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.75",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "5.19.17",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.19.*"
            },
            {
              "version": "6.0.3",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.0.*"
            },
            {
              "version": "6.1",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}