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Vulnerabilities

Vulnerability · CVE-2022-50271

In the Linux kernel, the following vulnerability has been resolved: vhost/vsock: Use kvmalloc/kvfree for larger packets.

Published Sep 15, 2025 · catalog updated May 11, 2026 · Linux Linux

Check if you run it

No confirmed exploitation is on record for CVE-2022-50271. EPSS is 0.16%. Act only if a listed version of Linux Linux is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
None0.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.16%
Remediation
Version ranges on file
Affected products
vendor Linux Linux 433fc58e6bf2c8bd97e57153ed28e64fd78207b8 <e28a4e7f0296824c61a81e7fd54ab48bad3e75ad

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: [ ] dump_stack+0x97/0xdb [ ] warn_alloc_failed+0x10f/0x138 [ ] ? __alloc_pages_direct_compact+0x38/0xc8 [ ] __alloc_pages_nodemask+0x84c/0x90d [ ] alloc_kmem_pages+0x17/0x19 [ ] kmalloc_order_trace+0x2b/0xdb [ ] __kmalloc+0x177/0x1f7 [ ] ? copy_from_iter+0x8d/0x31d [ ]

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Linux Linux 433fc58e6bf2c8bd97e57153ed28e64fd78207b8 <e28a4e7f0296824c61a81e7fd54ab48bad3e75ad433fc58e6bf2c8bd97e57153ed28e64fd78207b8 <e28a4e7f0296824c61a81e7fd54ab48bad3e75ad

How to fix CVE-2022-50271

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2022-50271. EPSS is 0.16%. Act only if a listed version of Linux Linux is installed.

Which versions are affected?

Compare what you have installed with Linux Linux 433fc58e6bf2c8bd97e57153ed28e64fd78207b8 <e28a4e7f0296824c61a81e7fd54ab48bad3e75ad 433fc58e6bf2c8bd97e57153ed28e64fd78207b8 <e28a4e7f0296824c61a81e7fd54ab48bad3e75ad. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.16%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 15, 2025 · EUVD

    Detected

    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: [ ] dump_stack+0x97/0xdb [ ] warn_alloc_failed+0x10f/0x138 [ ] ? __al

  2. May 11, 2026 · EUVD

    Updated

    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: [ ] dump_stack+0x97/0xdb [ ] warn_alloc_failed+0x10f/0x138 [ ] ? __al

Sources

  • CVE.orgVulnerability recordCVE-2022-50271

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2022-50271

    30-day exploitation probability 0.16%

    first.org
  • EUVDVulnerability recordEUVD-2022-55584

    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 alloc

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 21, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.