FKIE_CVE-2022-50271

Vulnerability from fkie_nvd - Published: 2025-09-15 15:15 - Updated: 2025-12-03 18:18
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0d720c3f0a03e97867deab7e480ba3d3e19837baPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0e3f72931fc47bb81686020cc643cde5d9cd0bb8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/36c9f340c60413e28f980c0224c4e9d35851526bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7aac8c63f604e6a6a46560c0f0188cd0332cf320Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a99fc6d818161d6f1ff3307de8bf5237f6cc34d8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b4a5905fd2ef841cd61e969ea692c213c2e5c1f7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e28a4e7f0296824c61a81e7fd54ab48bad3e75adPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e6d0152c95108651f1880c1ddfab47cb9e3e62d0Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

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  "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."
    }
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  "id": "CVE-2022-50271",
  "lastModified": "2025-12-03T18:18:35.573",
  "metrics": {
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          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
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        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
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  "published": "2025-09-15T15:15:37.930",
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}


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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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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.