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.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00047.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
3ad0876554cafa368f574d4d408468510543e9ff affected < 5d68ae32d132ea2af73bc223fd64c46f85302a8b
3ad0876554cafa368f574d4d408468510543e9ff affected < 4f983ee5e5de924d93a7bbb4e6f68f38c6256cd5
3ad0876554cafa368f574d4d408468510543e9ff affected < 46026bb057c35f5bb111bf95e00cd8366d2e34d4
3ad0876554cafa368f574d4d408468510543e9ff affected < 0bf874183b32eae2cc20e3c5be38ec3d33e7e564
3ad0876554cafa368f574d4d408468510543e9ff affected < e0c5f1058ed96f2b7487560c4c4cbd768d13d065
3ad0876554cafa368f574d4d408468510543e9ff affected < 4da411086f5ab32f811a89ef804980ec106ebb65
3ad0876554cafa368f574d4d408468510543e9ff affected < 8b997b2bb2c53b76a6db6c195930e9ab8e4b0c79
Linux Linux affected
Version Status Constraints
4.18 affected —
0 unaffected < 4.18
4.19.270 unaffected ≤ 4.19.*
5.4.229 unaffected ≤ 5.4.*
5.10.163 unaffected ≤ 5.10.*
5.15.86 unaffected ≤ 5.15.*
6.0.16 unaffected ≤ 6.0.*
6.1.2 unaffected ≤ 6.1.*
6.2 unaffected ≤ *

No data.

No data.

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/0bf874183b32eae2cc20e3c5be38ec3d33e7e564 cve-icon cve-icon
https://git.kernel.org/stable/c/46026bb057c35f5bb111bf95e00cd8366d2e34d4 cve-icon cve-icon
https://git.kernel.org/stable/c/4da411086f5ab32f811a89ef804980ec106ebb65 cve-icon cve-icon
https://git.kernel.org/stable/c/4f983ee5e5de924d93a7bbb4e6f68f38c6256cd5 cve-icon cve-icon
https://git.kernel.org/stable/c/5d68ae32d132ea2af73bc223fd64c46f85302a8b cve-icon cve-icon
https://git.kernel.org/stable/c/8b997b2bb2c53b76a6db6c195930e9ab8e4b0c79 cve-icon cve-icon
https://git.kernel.org/stable/c/e0c5f1058ed96f2b7487560c4c4cbd768d13d065 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025102208-CVE-2022-50575-1768@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2022-50575 cve-icon
https://www.cve.org/CVERecord?id=CVE-2022-50575 cve-icon
History

Thu, 23 Oct 2025 10:30:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Thu, 23 Oct 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Low

Wed, 22 Oct 2025 13:45:00 +0000

Type Values Removed Values 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.
Title xen/privcmd: Fix a possible warning in privcmd_ioctl_mmap_resource()
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-10-22T13:23:29.595Z

Reserved: 2025-10-22T13:20:23.761Z

Link: CVE-2022-50575

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-10-22T14:15:42.443

Modified: 2025-10-22T21:12:48.953

Link: CVE-2022-50575

cve-icon Redhat

Severity : Low

Publid Date: 2025-10-22T00:00:00Z

Links: CVE-2022-50575 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-10-23T10:07:36Z

Weaknesses

No weakness.