FKIE_CVE-2022-50575
Vulnerability from fkie_nvd - Published: 2025-10-22 14:15 - Updated: 2026-06-17 05:23
Severity
Summary
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.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/xen/privcmd.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "5d68ae32d132ea2af73bc223fd64c46f85302a8b",
"status": "affected",
"version": "3ad0876554cafa368f574d4d408468510543e9ff",
"versionType": "git"
},
{
"lessThan": "4f983ee5e5de924d93a7bbb4e6f68f38c6256cd5",
"status": "affected",
"version": "3ad0876554cafa368f574d4d408468510543e9ff",
"versionType": "git"
},
{
"lessThan": "46026bb057c35f5bb111bf95e00cd8366d2e34d4",
"status": "affected",
"version": "3ad0876554cafa368f574d4d408468510543e9ff",
"versionType": "git"
},
{
"lessThan": "0bf874183b32eae2cc20e3c5be38ec3d33e7e564",
"status": "affected",
"version": "3ad0876554cafa368f574d4d408468510543e9ff",
"versionType": "git"
},
{
"lessThan": "e0c5f1058ed96f2b7487560c4c4cbd768d13d065",
"status": "affected",
"version": "3ad0876554cafa368f574d4d408468510543e9ff",
"versionType": "git"
},
{
"lessThan": "4da411086f5ab32f811a89ef804980ec106ebb65",
"status": "affected",
"version": "3ad0876554cafa368f574d4d408468510543e9ff",
"versionType": "git"
},
{
"lessThan": "8b997b2bb2c53b76a6db6c195930e9ab8e4b0c79",
"status": "affected",
"version": "3ad0876554cafa368f574d4d408468510543e9ff",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/xen/privcmd.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.18"
},
{
"lessThan": "4.18",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"version": "4.19.270",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.229",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.163",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.86",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.0.*",
"status": "unaffected",
"version": "6.0.16",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxen/privcmd: Fix a possible warning in privcmd_ioctl_mmap_resource()\n\nAs \u0027kdata.num\u0027 is user-controlled data, if user tries to allocate\nmemory larger than(\u003e=) MAX_ORDER, then kcalloc() will fail, it\ncreates a stack trace and messes up dmesg with a warning.\n\nCall trace:\n-\u003e privcmd_ioctl\n--\u003e privcmd_ioctl_mmap_resource\n\nAdd __GFP_NOWARN in order to avoid too large allocation warning.\nThis is detected by static analysis using smatch."
}
],
"id": "CVE-2022-50575",
"lastModified": "2026-06-17T05:23:49.233",
"metrics": {},
"published": "2025-10-22T14:15:42.443",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/0bf874183b32eae2cc20e3c5be38ec3d33e7e564"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/46026bb057c35f5bb111bf95e00cd8366d2e34d4"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/4da411086f5ab32f811a89ef804980ec106ebb65"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/4f983ee5e5de924d93a7bbb4e6f68f38c6256cd5"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/5d68ae32d132ea2af73bc223fd64c46f85302a8b"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/8b997b2bb2c53b76a6db6c195930e9ab8e4b0c79"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/e0c5f1058ed96f2b7487560c4c4cbd768d13d065"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Deferred"
}
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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- Confirmed: The vulnerability has been validated from an analyst's perspective.
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