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CVE-2022-50575
xen/privcmd: Fix a possible warning in privcmd_ioctl_mmap_resource()
Description

In the Linux kernel, the following vulnerability has been resolved: xen/privcmd: Fix a possible warning in privcmd_ioctl_mmap_resource() As 'kdata.num' is user-controlled data, if user tries to allocate memory larger than(>=) MAX_ORDER, then kcalloc() will fail, it creates a stack trace and messes up dmesg with a warning. Call trace: -> privcmd_ioctl --> privcmd_ioctl_mmap_resource Add __GFP_NOWARN in order to avoid too large allocation warning. This is detected by static analysis using smatch.

INFO

Published Date :

Oct. 22, 2025, 2:15 p.m.

Last Modified :

Oct. 22, 2025, 9:12 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products

The following products are affected by CVE-2022-50575 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Solution
Avoid large allocation warnings by suppressing specific kernel allocation messages.
  • Apply the patch to the Linux kernel.
  • Ensure static analysis tools are used.
  • Monitor kernel logs for warnings.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2022-50575.

URL Resource
https://git.kernel.org/stable/c/0bf874183b32eae2cc20e3c5be38ec3d33e7e564
https://git.kernel.org/stable/c/46026bb057c35f5bb111bf95e00cd8366d2e34d4
https://git.kernel.org/stable/c/4da411086f5ab32f811a89ef804980ec106ebb65
https://git.kernel.org/stable/c/4f983ee5e5de924d93a7bbb4e6f68f38c6256cd5
https://git.kernel.org/stable/c/5d68ae32d132ea2af73bc223fd64c46f85302a8b
https://git.kernel.org/stable/c/8b997b2bb2c53b76a6db6c195930e9ab8e4b0c79
https://git.kernel.org/stable/c/e0c5f1058ed96f2b7487560c4c4cbd768d13d065
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2022-50575 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2022-50575 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2022-50575 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2022-50575 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Oct. 22, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: xen/privcmd: Fix a possible warning in privcmd_ioctl_mmap_resource() As 'kdata.num' is user-controlled data, if user tries to allocate memory larger than(>=) MAX_ORDER, then kcalloc() will fail, it creates a stack trace and messes up dmesg with a warning. Call trace: -> privcmd_ioctl --> privcmd_ioctl_mmap_resource Add __GFP_NOWARN in order to avoid too large allocation warning. This is detected by static analysis using smatch.
    Added Reference https://git.kernel.org/stable/c/0bf874183b32eae2cc20e3c5be38ec3d33e7e564
    Added Reference https://git.kernel.org/stable/c/46026bb057c35f5bb111bf95e00cd8366d2e34d4
    Added Reference https://git.kernel.org/stable/c/4da411086f5ab32f811a89ef804980ec106ebb65
    Added Reference https://git.kernel.org/stable/c/4f983ee5e5de924d93a7bbb4e6f68f38c6256cd5
    Added Reference https://git.kernel.org/stable/c/5d68ae32d132ea2af73bc223fd64c46f85302a8b
    Added Reference https://git.kernel.org/stable/c/8b997b2bb2c53b76a6db6c195930e9ab8e4b0c79
    Added Reference https://git.kernel.org/stable/c/e0c5f1058ed96f2b7487560c4c4cbd768d13d065
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
No CVSS metrics available for this vulnerability.