{"id":"CVE-2026-45956","summary":"drm/exynos: vidi: use priv-\u003evidi_dev for ctx lookup in vidi_connection_ioctl()","details":"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.","modified":"2026-07-11T03:54:22.253901868Z","published":"2026-05-27T12:18:11.972Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45956.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/21ca24ba51a2c28bcc4df9d7e5a40b0eb66ab76d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2987642c5213508c6c9e718324c0d5289a92c474"},{"type":"WEB","url":"https://git.kernel.org/stable/c/65d1213baffa363f2eb1117b1dc7acc573b890f8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/875fa28690e93ed5296c31d3344556c6bb867234"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a540f767642f75240a6c35f6a65b69e44cfcea9d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b5fc86d753dd4c281a943b92f0eef02d31af03d7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d3968a0d85b211e197f2f4f06268a7031079e0d0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45956.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45956"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322"},{"fixed":"2987642c5213508c6c9e718324c0d5289a92c474"},{"fixed":"65d1213baffa363f2eb1117b1dc7acc573b890f8"},{"fixed":"875fa28690e93ed5296c31d3344556c6bb867234"},{"fixed":"21ca24ba51a2c28bcc4df9d7e5a40b0eb66ab76d"},{"fixed":"b5fc86d753dd4c281a943b92f0eef02d31af03d7"},{"fixed":"a540f767642f75240a6c35f6a65b69e44cfcea9d"},{"fixed":"d3968a0d85b211e197f2f4f06268a7031079e0d0"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-45956.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.3.0"},{"fixed":"5.10.253"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.203"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.167"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.130"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.18.14"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-45956.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}