{"id":"CVE-2026-68275","summary":"drm/amdgpu: check amdgpu_vm_bo_find() result in GET_MAPPING_INFO","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: check amdgpu_vm_bo_find() result in GET_MAPPING_INFO\n\nThe AMDGPU_GEM_OP_GET_MAPPING_INFO path of amdgpu_gem_op_ioctl() looks\nup the bo_va for the buffer object in the caller's VM via\namdgpu_vm_bo_find(), but uses the returned pointer without checking it.\n\namdgpu_vm_bo_find() returns NULL when the BO has no bo_va in that VM,\nwhich is the normal case for a BO that has never been mapped. The result\nis fed straight into amdgpu_vm_bo_va_for_each_valid_mapping(), which\nexpands to list_for_each_entry(mapping, &(bo_va)-\u003evalids, list) and\ndereferences bo_va, causing a NULL pointer dereference.\n\nThis is reachable by any process able to issue the ioctl (render group)\nsimply by requesting mapping info for an unmapped BO.\n\nReturn -ENOENT when no bo_va is found, jumping to out_exec so the\ndrm_exec context and GEM object reference are released.\n\n(cherry picked from commit 528b19377affc1cc7362a70a254c1dda793595f9)","modified":"2026-08-12T04:18:47.290295404Z","published":"2026-08-10T12:01:50.777Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68275.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/93475c34111916df71c63e510fc52db01351f809"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9faf4c66edb6bcb8ca0465c3a4868bb7f278cd31"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ddba17b3dfa0efc80d6c98621c2fb7af66adb622"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68275.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68275"},{"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":"4d82724f7f2b847eb0454b1aab5450545b39abd4"},{"fixed":"ddba17b3dfa0efc80d6c98621c2fb7af66adb622"},{"fixed":"9faf4c66edb6bcb8ca0465c3a4868bb7f278cd31"},{"fixed":"93475c34111916df71c63e510fc52db01351f809"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68275.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.18.0"},{"fixed":"6.18.42"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68275.json"}}],"schema_version":"1.9.0"}