CVE-2022-50271 (GCVE-0-2022-50271)

Vulnerability from cvelistv5 – Published: 2025-09-15 14:21 – Updated: 2025-09-15 14:21
VLAI?
Title
vhost/vsock: Use kvmalloc/kvfree for larger packets.
Summary
In the Linux kernel, the following vulnerability has been resolved: vhost/vsock: Use kvmalloc/kvfree for larger packets. When copying a large file over sftp over vsock, data size is usually 32kB, and kmalloc seems to fail to try to allocate 32 32kB regions. vhost-5837: page allocation failure: order:4, mode:0x24040c0 Call Trace: [<ffffffffb6a0df64>] dump_stack+0x97/0xdb [<ffffffffb68d6aed>] warn_alloc_failed+0x10f/0x138 [<ffffffffb68d868a>] ? __alloc_pages_direct_compact+0x38/0xc8 [<ffffffffb664619f>] __alloc_pages_nodemask+0x84c/0x90d [<ffffffffb6646e56>] alloc_kmem_pages+0x17/0x19 [<ffffffffb6653a26>] kmalloc_order_trace+0x2b/0xdb [<ffffffffb66682f3>] __kmalloc+0x177/0x1f7 [<ffffffffb66e0d94>] ? copy_from_iter+0x8d/0x31d [<ffffffffc0689ab7>] vhost_vsock_handle_tx_kick+0x1fa/0x301 [vhost_vsock] [<ffffffffc06828d9>] vhost_worker+0xf7/0x157 [vhost] [<ffffffffb683ddce>] kthread+0xfd/0x105 [<ffffffffc06827e2>] ? vhost_dev_set_owner+0x22e/0x22e [vhost] [<ffffffffb683dcd1>] ? flush_kthread_worker+0xf3/0xf3 [<ffffffffb6eb332e>] ret_from_fork+0x4e/0x80 [<ffffffffb683dcd1>] ? flush_kthread_worker+0xf3/0xf3 Work around by doing kvmalloc instead.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 433fc58e6bf2c8bd97e57153ed28e64fd78207b8 , < 0d720c3f0a03e97867deab7e480ba3d3e19837ba (git)
Affected: 433fc58e6bf2c8bd97e57153ed28e64fd78207b8 , < 7aac8c63f604e6a6a46560c0f0188cd0332cf320 (git)
Affected: 433fc58e6bf2c8bd97e57153ed28e64fd78207b8 , < e6d0152c95108651f1880c1ddfab47cb9e3e62d0 (git)
Affected: 433fc58e6bf2c8bd97e57153ed28e64fd78207b8 , < b4a5905fd2ef841cd61e969ea692c213c2e5c1f7 (git)
Affected: 433fc58e6bf2c8bd97e57153ed28e64fd78207b8 , < e28a4e7f0296824c61a81e7fd54ab48bad3e75ad (git)
Affected: 433fc58e6bf2c8bd97e57153ed28e64fd78207b8 , < a99fc6d818161d6f1ff3307de8bf5237f6cc34d8 (git)
Affected: 433fc58e6bf2c8bd97e57153ed28e64fd78207b8 , < 36c9f340c60413e28f980c0224c4e9d35851526b (git)
Affected: 433fc58e6bf2c8bd97e57153ed28e64fd78207b8 , < 0e3f72931fc47bb81686020cc643cde5d9cd0bb8 (git)
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    Linux Linux Affected: 4.8
Unaffected: 0 , < 4.8 (semver)
Unaffected: 4.14.296 , ≤ 4.14.* (semver)
Unaffected: 4.19.262 , ≤ 4.19.* (semver)
Unaffected: 5.4.220 , ≤ 5.4.* (semver)
Unaffected: 5.10.150 , ≤ 5.10.* (semver)
Unaffected: 5.15.75 , ≤ 5.15.* (semver)
Unaffected: 5.19.17 , ≤ 5.19.* (semver)
Unaffected: 6.0.3 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/vhost/vsock.c",
            "net/vmw_vsock/virtio_transport_common.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0d720c3f0a03e97867deab7e480ba3d3e19837ba",
              "status": "affected",
              "version": "433fc58e6bf2c8bd97e57153ed28e64fd78207b8",
              "versionType": "git"
            },
            {
              "lessThan": "7aac8c63f604e6a6a46560c0f0188cd0332cf320",
              "status": "affected",
              "version": "433fc58e6bf2c8bd97e57153ed28e64fd78207b8",
              "versionType": "git"
            },
            {
              "lessThan": "e6d0152c95108651f1880c1ddfab47cb9e3e62d0",
              "status": "affected",
              "version": "433fc58e6bf2c8bd97e57153ed28e64fd78207b8",
              "versionType": "git"
            },
            {
              "lessThan": "b4a5905fd2ef841cd61e969ea692c213c2e5c1f7",
              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "e28a4e7f0296824c61a81e7fd54ab48bad3e75ad",
              "status": "affected",
              "version": "433fc58e6bf2c8bd97e57153ed28e64fd78207b8",
              "versionType": "git"
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              "status": "affected",
              "version": "433fc58e6bf2c8bd97e57153ed28e64fd78207b8",
              "versionType": "git"
            },
            {
              "lessThan": "36c9f340c60413e28f980c0224c4e9d35851526b",
              "status": "affected",
              "version": "433fc58e6bf2c8bd97e57153ed28e64fd78207b8",
              "versionType": "git"
            },
            {
              "lessThan": "0e3f72931fc47bb81686020cc643cde5d9cd0bb8",
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              "version": "433fc58e6bf2c8bd97e57153ed28e64fd78207b8",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/vhost/vsock.c",
            "net/vmw_vsock/virtio_transport_common.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.8"
            },
            {
              "lessThan": "4.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.296",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.262",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.220",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.150",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.19.*",
              "status": "unaffected",
              "version": "5.19.17",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.296",
                  "versionStartIncluding": "4.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.262",
                  "versionStartIncluding": "4.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.220",
                  "versionStartIncluding": "4.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.150",
                  "versionStartIncluding": "4.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.75",
                  "versionStartIncluding": "4.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19.17",
                  "versionStartIncluding": "4.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.3",
                  "versionStartIncluding": "4.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1",
                  "versionStartIncluding": "4.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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  [\u003cffffffffb6a0df64\u003e] dump_stack+0x97/0xdb\n  [\u003cffffffffb68d6aed\u003e] warn_alloc_failed+0x10f/0x138\n  [\u003cffffffffb68d868a\u003e] ? __alloc_pages_direct_compact+0x38/0xc8\n  [\u003cffffffffb664619f\u003e] __alloc_pages_nodemask+0x84c/0x90d\n  [\u003cffffffffb6646e56\u003e] alloc_kmem_pages+0x17/0x19\n  [\u003cffffffffb6653a26\u003e] kmalloc_order_trace+0x2b/0xdb\n  [\u003cffffffffb66682f3\u003e] __kmalloc+0x177/0x1f7\n  [\u003cffffffffb66e0d94\u003e] ? copy_from_iter+0x8d/0x31d\n  [\u003cffffffffc0689ab7\u003e] vhost_vsock_handle_tx_kick+0x1fa/0x301 [vhost_vsock]\n  [\u003cffffffffc06828d9\u003e] vhost_worker+0xf7/0x157 [vhost]\n  [\u003cffffffffb683ddce\u003e] kthread+0xfd/0x105\n  [\u003cffffffffc06827e2\u003e] ? vhost_dev_set_owner+0x22e/0x22e [vhost]\n  [\u003cffffffffb683dcd1\u003e] ? flush_kthread_worker+0xf3/0xf3\n  [\u003cffffffffb6eb332e\u003e] ret_from_fork+0x4e/0x80\n  [\u003cffffffffb683dcd1\u003e] ? flush_kthread_worker+0xf3/0xf3\n\nWork around by doing kvmalloc instead."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-15T14:21:07.563Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0d720c3f0a03e97867deab7e480ba3d3e19837ba"
        },
        {
          "url": "https://git.kernel.org/stable/c/7aac8c63f604e6a6a46560c0f0188cd0332cf320"
        },
        {
          "url": "https://git.kernel.org/stable/c/e6d0152c95108651f1880c1ddfab47cb9e3e62d0"
        },
        {
          "url": "https://git.kernel.org/stable/c/b4a5905fd2ef841cd61e969ea692c213c2e5c1f7"
        },
        {
          "url": "https://git.kernel.org/stable/c/e28a4e7f0296824c61a81e7fd54ab48bad3e75ad"
        },
        {
          "url": "https://git.kernel.org/stable/c/a99fc6d818161d6f1ff3307de8bf5237f6cc34d8"
        },
        {
          "url": "https://git.kernel.org/stable/c/36c9f340c60413e28f980c0224c4e9d35851526b"
        },
        {
          "url": "https://git.kernel.org/stable/c/0e3f72931fc47bb81686020cc643cde5d9cd0bb8"
        }
      ],
      "title": "vhost/vsock: Use kvmalloc/kvfree for larger packets.",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50271",
    "datePublished": "2025-09-15T14:21:07.563Z",
    "dateReserved": "2025-09-15T13:58:00.975Z",
    "dateUpdated": "2025-09-15T14:21:07.563Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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