CVE-2026-45956 (GCVE-0-2026-45956)
Vulnerability from cvelistv5
Published
2026-05-27 12:18
Modified
2026-06-05 06:06
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
drm/exynos: vidi: use priv->vidi_dev for ctx lookup in vidi_connection_ioctl()
vidi_connection_ioctl() retrieves the driver_data from drm_dev->dev to
obtain a struct vidi_context pointer. However, drm_dev->dev is the
exynos-drm master device, and the driver_data contained therein is not
the vidi component device, but a completely different device.
This can lead to various bugs, ranging from null pointer dereferences and
garbage value accesses to, in unlucky cases, out-of-bounds errors,
use-after-free errors, and more.
To resolve this issue, we need to store/delete the vidi device pointer in
exynos_drm_private->vidi_dev during bind/unbind, and then read this
exynos_drm_private->vidi_dev within ioctl() to obtain the correct
struct vidi_context pointer.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 Version: cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 Version: cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 Version: cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 Version: cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 Version: cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 Version: cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 |
||
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/gpu/drm/exynos/exynos_drm_drv.h",
"drivers/gpu/drm/exynos/exynos_drm_vidi.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
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"versionType": "git"
},
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{
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"product": "Linux",
"programFiles": [
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"drivers/gpu/drm/exynos/exynos_drm_vidi.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.3"
},
{
"lessThan": "4.3",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.253",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.203",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.167",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.130",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.14",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.19.*",
"status": "unaffected",
"version": "6.19.4",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
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"vulnerable": true
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{
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{
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{
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}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/exynos: vidi: use priv-\u003evidi_dev for ctx lookup in vidi_connection_ioctl()\n\nvidi_connection_ioctl() retrieves the driver_data from drm_dev-\u003edev to\nobtain a struct vidi_context pointer. However, drm_dev-\u003edev is the\nexynos-drm master device, and the driver_data contained therein is not\nthe vidi component device, but a completely different device.\n\nThis can lead to various bugs, ranging from null pointer dereferences and\ngarbage value accesses to, in unlucky cases, out-of-bounds errors,\nuse-after-free errors, and more.\n\nTo resolve this issue, we need to store/delete the vidi device pointer in\nexynos_drm_private-\u003evidi_dev during bind/unbind, and then read this\nexynos_drm_private-\u003evidi_dev within ioctl() to obtain the correct\nstruct vidi_context pointer."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-05T06:06:12.449Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/2987642c5213508c6c9e718324c0d5289a92c474"
},
{
"url": "https://git.kernel.org/stable/c/65d1213baffa363f2eb1117b1dc7acc573b890f8"
},
{
"url": "https://git.kernel.org/stable/c/875fa28690e93ed5296c31d3344556c6bb867234"
},
{
"url": "https://git.kernel.org/stable/c/21ca24ba51a2c28bcc4df9d7e5a40b0eb66ab76d"
},
{
"url": "https://git.kernel.org/stable/c/b5fc86d753dd4c281a943b92f0eef02d31af03d7"
},
{
"url": "https://git.kernel.org/stable/c/a540f767642f75240a6c35f6a65b69e44cfcea9d"
},
{
"url": "https://git.kernel.org/stable/c/d3968a0d85b211e197f2f4f06268a7031079e0d0"
}
],
"title": "drm/exynos: vidi: use priv-\u003evidi_dev for ctx lookup in vidi_connection_ioctl()",
"x_generator": {
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}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-45956",
"datePublished": "2026-05-27T12:18:11.972Z",
"dateReserved": "2026-05-13T15:03:33.088Z",
"dateUpdated": "2026-06-05T06:06:12.449Z",
"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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