CVE-2026-45956

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.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/21ca24ba51a2c28bcc4df9d7e5a40b0eb66ab76d	Patch
https://git.kernel.org/stable/c/2987642c5213508c6c9e718324c0d5289a92c474	Patch
https://git.kernel.org/stable/c/65d1213baffa363f2eb1117b1dc7acc573b890f8	Patch
https://git.kernel.org/stable/c/875fa28690e93ed5296c31d3344556c6bb867234	Patch
https://git.kernel.org/stable/c/a540f767642f75240a6c35f6a65b69e44cfcea9d	Patch
https://git.kernel.org/stable/c/b5fc86d753dd4c281a943b92f0eef02d31af03d7	Patch
https://git.kernel.org/stable/c/d3968a0d85b211e197f2f4f06268a7031079e0d0	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2026-05-27 14:17

Updated : 2026-06-17 10:52

NVD link : CVE-2026-45956

Mitre link : CVE-2026-45956

CVE.ORG link : CVE-2026-45956

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

{"id": "CVE-2026-45956", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322", "lessThan": "2987642c5213508c6c9e718324c0d5289a92c474", "versionType": "git"}, {"status": "affected", "version": "cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322", "lessThan": "65d1213baffa363f2eb1117b1dc7acc573b890f8", "versionType": "git"}, {"status": "affected", "version": "cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322", "lessThan": "875fa28690e93ed5296c31d3344556c6bb867234", "versionType": "git"}, {"status": "affected", "version": "cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322", "lessThan": "21ca24ba51a2c28bcc4df9d7e5a40b0eb66ab76d", "versionType": "git"}, {"status": "affected", "version": "cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322", "lessThan": "b5fc86d753dd4c281a943b92f0eef02d31af03d7", "versionType": "git"}, {"status": "affected", "version": "cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322", "lessThan": "a540f767642f75240a6c35f6a65b69e44cfcea9d", "versionType": "git"}, {"status": "affected", "version": "cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322", "lessThan": "d3968a0d85b211e197f2f4f06268a7031079e0d0", "versionType": "git"}], "programFiles": ["drivers/gpu/drm/exynos/exynos_drm_drv.h", "drivers/gpu/drm/exynos/exynos_drm_vidi.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.3"}, {"status": "unaffected", "version": "0", "lessThan": "4.3", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.253", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.203", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.167", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.130", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.18.14", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19.4", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/gpu/drm/exynos/exynos_drm_drv.h", "drivers/gpu/drm/exynos/exynos_drm_vidi.c"], "defaultStatus": "affected"}]}], "published": "2026-05-27T14:17:12.157", "references": [{"url": "https://git.kernel.org/stable/c/21ca24ba51a2c28bcc4df9d7e5a40b0eb66ab76d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/2987642c5213508c6c9e718324c0d5289a92c474", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/65d1213baffa363f2eb1117b1dc7acc573b890f8", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/875fa28690e93ed5296c31d3344556c6bb867234", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a540f767642f75240a6c35f6a65b69e44cfcea9d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b5fc86d753dd4c281a943b92f0eef02d31af03d7", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d3968a0d85b211e197f2f4f06268a7031079e0d0", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/exynos: vidi: use priv->vidi_dev for ctx lookup in vidi_connection_ioctl()\n\nvidi_connection_ioctl() retrieves the driver_data from drm_dev->dev to\nobtain a struct vidi_context pointer. However, drm_dev->dev 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->vidi_dev during bind/unbind, and then read this\nexynos_drm_private->vidi_dev within ioctl() to obtain the correct\nstruct vidi_context pointer."}], "lastModified": "2026-06-17T10:52:47.560", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "783AB9A5-59A3-4686-B793-734D6539F39C", "versionEndExcluding": "5.10.253", "versionStartIncluding": "4.3"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "20DDB3E9-AABF-4107-ADB0-5362AA067045", "versionEndExcluding": "5.15.203", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2EDC6BAF-B710-4E26-B6AA-D68922EE7B43", "versionEndExcluding": "6.1.167", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C57BB918-DF28-46B3-94F7-144176841267", "versionEndExcluding": "6.6.130", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "136A5695-0178-4A6D-9862-A367A7C8DB67", "versionEndExcluding": "6.18.14", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "672A3E79-EC03-479D-8503-361DFBDC8092", "versionEndExcluding": "6.19.4", "versionStartIncluding": "6.19"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}