{"id":"CVE-2026-45956","title":"drm/exynos: vidi: use priv->vidi_dev for ctx lookup in vidi_connection_ioctl()","summary":"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 v…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 < 2987642c5213508c6c9e718324c0d5289a92c474","Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 < 65d1213baffa363f2eb1117b1dc7acc573b890f8","Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 < 875fa28690e93ed5296c31d3344556c6bb867234","Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 < 21ca24ba51a2c28bcc4df9d7e5a40b0eb66ab76d","Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 < e1aed617eb80b49eac2f8c7bb7a0990f641dd59b","Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 < b5fc86d753dd4c281a943b92f0eef02d31af03d7","Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 < a540f767642f75240a6c35f6a65b69e44cfcea9d","Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 < d3968a0d85b211e197f2f4f06268a7031079e0d0","Linux 4.3"],"published":"2026-05-27","updated":"2026-10-21","sourceUpdated":"2026-10-21T12:41:06.321Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-45956","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/e1aed617eb80b49eac2f8c7bb7a0990f641dd59b"},{"url":"https://git.kernel.org/stable/c/b5fc86d753dd4c281a943b92f0eef02d31af03d7"},{"url":"https://git.kernel.org/stable/c/a540f767642f75240a6c35f6a65b69e44cfcea9d"},{"url":"https://git.kernel.org/stable/c/d3968a0d85b211e197f2f4f06268a7031079e0d0"}],"tags":["cve.org"],"epss":0.00171,"epssPercentile":0.06102,"ingestedAt":"2026-10-21T12:48:53.632Z","slug":"CVE-2026-45956","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 < 2987642c5213508c6c9e718324c0d5289a92c474`\n- `Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 < 65d1213baffa363f2eb1117b1dc7acc573b890f8`\n- `Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 < 875fa28690e93ed5296c31d3344556c6bb867234`\n- `Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 < 21ca24ba51a2c28bcc4df9d7e5a40b0eb66ab76d`\n- `Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 < e1aed617eb80b49eac2f8c7bb7a0990f641dd59b`\n- `Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 < b5fc86d753dd4c281a943b92f0eef02d31af03d7`\n- `Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 < a540f767642f75240a6c35f6a65b69e44cfcea9d`\n- `Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 < d3968a0d85b211e197f2f4f06268a7031079e0d0`\n- `Linux 4.3`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}