{"id":"CVE-2026-98178","summary":"drm/amdgpu: Skip KFD mapping clear before initialization","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: Skip KFD mapping clear before initialization\n\namdgpu_amdkfd_clear_kfd_mapping() assumes that a non-NULL kfd_dev\nhas a fully populated node array. This is not true when KFD device\ninitialization fails after probe.\n\nFor example, kgd2kfd_device_init() sets num_nodes before checking\nPCIe atomics support. On Polaris systems without the required atomics,\nit returns before allocating nodes[0], but the kfd_dev remains attached\nto the amdgpu device. A later GPU reset then dereferences nodes[0]-\u003eid.\n\nRequire the authoritative KFD initialization flag before walking the\nnode array, matching the existing KFD reset and teardown paths.\n\n(cherry picked from commit 4ac1835823c47903fbb278bbf474773c46f59edc)","modified":"2026-10-08T02:52:50.276829715Z","published":"2026-10-06T08:44:21.602Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98178.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/157d3f1db7e7e6f320daa221fae84a4c13555b6f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7f9caa70aef0950e06d395ca0035831214d88187"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98178.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98178"},{"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":"70cadefcc6160c575b04f763ada34c20e868d577"},{"fixed":"157d3f1db7e7e6f320daa221fae84a4c13555b6f"},{"fixed":"7f9caa70aef0950e06d395ca0035831214d88187"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98178.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"7.2.0"},{"fixed":"7.2.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98178.json"}}],"schema_version":"1.9.0"}