CVE-2022-50271

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Source
https://cve.org/CVERecord?id=CVE-2022-50271
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-50271.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2022-50271
Downstream
Related
Published
2025-09-15T14:21:07.563Z
Modified
2026-03-20T11:47:21.306980Z
Summary
vhost/vsock: Use kvmalloc/kvfree for larger packets.
Details

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>] dumpstack+0x97/0xdb [<ffffffffb68d6aed>] warnalloc_failed+0x10f/0x138 [<ffffffffb68d868a>] ? __allocpagesdirect_compact+0x38/0xc8 [<ffffffffb664619f>] __allocpagesnodemask+0x84c/0x90d [<ffffffffb6646e56>] allockmempages+0x17/0x19 [<ffffffffb6653a26>] kmallocordertrace+0x2b/0xdb [<ffffffffb66682f3>] _kmalloc+0x177/0x1f7 [<ffffffffb66e0d94>] ? copyfromiter+0x8d/0x31d [<ffffffffc0689ab7>] vhostvsockhandletxkick+0x1fa/0x301 [vhostvsock] [<ffffffffc06828d9>] vhostworker+0xf7/0x157 [vhost] [<ffffffffb683ddce>] kthread+0xfd/0x105 [<ffffffffc06827e2>] ? vhostdevsetowner+0x22e/0x22e [vhost] [<ffffffffb683dcd1>] ? flushkthreadworker+0xf3/0xf3 [<ffffffffb6eb332e>] retfromfork+0x4e/0x80 [<ffffffffb683dcd1>] ? flushkthreadworker+0xf3/0xf3

Work around by doing kvmalloc instead.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50271.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
433fc58e6bf2c8bd97e57153ed28e64fd78207b8
Fixed
0d720c3f0a03e97867deab7e480ba3d3e19837ba
Fixed
7aac8c63f604e6a6a46560c0f0188cd0332cf320
Fixed
e6d0152c95108651f1880c1ddfab47cb9e3e62d0
Fixed
b4a5905fd2ef841cd61e969ea692c213c2e5c1f7
Fixed
e28a4e7f0296824c61a81e7fd54ab48bad3e75ad
Fixed
a99fc6d818161d6f1ff3307de8bf5237f6cc34d8
Fixed
36c9f340c60413e28f980c0224c4e9d35851526b
Fixed
0e3f72931fc47bb81686020cc643cde5d9cd0bb8

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-50271.json"