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

Vulnerability from cvelistv5 – Published: 2025-09-15 14:21 – Updated: 2025-09-15 14:21
VLAI?
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": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/vhost/vsock.c",
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      "cpeApplicability": [
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      "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"
        },
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          "url": "https://git.kernel.org/stable/c/b4a5905fd2ef841cd61e969ea692c213c2e5c1f7"
        },
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          "url": "https://git.kernel.org/stable/c/e28a4e7f0296824c61a81e7fd54ab48bad3e75ad"
        },
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          "url": "https://git.kernel.org/stable/c/a99fc6d818161d6f1ff3307de8bf5237f6cc34d8"
        },
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          "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"
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    }
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  "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",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50271\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-15T15:15:37.930\",\"lastModified\":\"2025-12-03T18:18:35.573\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"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.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.8\",\"versionEndExcluding\":\"4.14.296\",\"matchCriteriaId\":\"F3352836-F8E4-41E3-A001-D3DF24454C16\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.15\",\"versionEndExcluding\":\"4.19.262\",\"matchCriteriaId\":\"D6B62970-1FAD-4ED6-930A-23E26A8D2E08\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.220\",\"matchCriteriaId\":\"125F7133-B3B7-4175-8CF3-FF0845483254\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.150\",\"matchCriteriaId\":\"C495821C-2A71-4F09-BED8-6A6EB4C9BA27\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.75\",\"matchCriteriaId\":\"6D945F46-F32F-4C09-8400-C3477E22A9FB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.19.17\",\"matchCriteriaId\":\"19B4C3A4-E5C3-41DC-BB14-BE72858E7D35\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.0\",\"versionEndExcluding\":\"6.0.3\",\"matchCriteriaId\":\"5BCD8201-B847-4442-B894-70D430128DEF\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0d720c3f0a03e97867deab7e480ba3d3e19837ba\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/0e3f72931fc47bb81686020cc643cde5d9cd0bb8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/36c9f340c60413e28f980c0224c4e9d35851526b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7aac8c63f604e6a6a46560c0f0188cd0332cf320\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a99fc6d818161d6f1ff3307de8bf5237f6cc34d8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b4a5905fd2ef841cd61e969ea692c213c2e5c1f7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e28a4e7f0296824c61a81e7fd54ab48bad3e75ad\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e6d0152c95108651f1880c1ddfab47cb9e3e62d0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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