CVE-2026-23338 (GCVE-0-2026-23338)
Vulnerability from cvelistv5
Published
2026-03-25 10:27
Modified
2026-04-13 06:05
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu/userq: Do not allow userspace to trivially triger kernel warnings
Userspace can either deliberately pass in the too small num_fences, or the
required number can legitimately grow between the two calls to the userq
wait ioctl. In both cases we do not want the emit the kernel warning
backtrace since nothing is wrong with the kernel and userspace will simply
get an errno reported back. So lets simply drop the WARN_ONs.
(cherry picked from commit 2c333ea579de6cc20ea7bc50e9595ef72863e65c)
References
Impacted products
{
"containers": {
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"programFiles": [
"drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"versions": [
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"version": "a292fdecd72834b3bec380baa5db1e69e7f70679",
"versionType": "git"
},
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"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
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"programFiles": [
"drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.16"
},
{
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"version": "0",
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{
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"status": "unaffected",
"version": "6.18.17",
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},
{
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"status": "unaffected",
"version": "6.19.7",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
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"nodes": [
{
"cpeMatch": [
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/userq: Do not allow userspace to trivially triger kernel warnings\n\nUserspace can either deliberately pass in the too small num_fences, or the\nrequired number can legitimately grow between the two calls to the userq\nwait ioctl. In both cases we do not want the emit the kernel warning\nbacktrace since nothing is wrong with the kernel and userspace will simply\nget an errno reported back. So lets simply drop the WARN_ONs.\n\n(cherry picked from commit 2c333ea579de6cc20ea7bc50e9595ef72863e65c)"
}
],
"providerMetadata": {
"dateUpdated": "2026-04-13T06:05:20.076Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/1753f5f81ab60a553287f9ee659a6ac363adf8d7"
},
{
"url": "https://git.kernel.org/stable/c/7321302edca3a349ddaea689df95b986beee6c4a"
},
{
"url": "https://git.kernel.org/stable/c/7b7d7693a55d606d700beb9549c9f7f0e5d9c24f"
}
],
"title": "drm/amdgpu/userq: Do not allow userspace to trivially triger kernel warnings",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
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"assignerShortName": "Linux",
"cveId": "CVE-2026-23338",
"datePublished": "2026-03-25T10:27:27.377Z",
"dateReserved": "2026-01-13T15:37:45.997Z",
"dateUpdated": "2026-04-13T06:05:20.076Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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