{"id":"CVE-2026-98270","summary":"drm/amdgpu: check ras and obj before dereference","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: check ras and obj before dereference\n\nnbio_v7_9_handle_ras_controller_intr_no_bifring() dereferences ras and obj\nwithout checking either for NULL. Both amdgpu_ras_get_context() and\namdgpu_ras_find_obj() can return NULL, e.g. during the window between\nadev-\u003enbio.ras being set (early in amdgpu_ras_init(), by design, to\nenable the fatal-error interrupt as soon as possible) and the PCIE_BIF\nras object actually being created in RAS late_init. Any interrupt in that\nwindow crashes in hard-IRQ context.\n\nThis is analogous to commit d190b459b2a4 (\"drm/amdgpu: the warning\ndereferencing obj for nbio_v7_4\"), which fixed the same issue in the\nnbio_v7_4 handler.\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE.\n\n(cherry picked from commit c7071767a50a32ed727cf800ac84372429e3b4b3)","modified":"2026-10-08T02:52:56.204332939Z","published":"2026-10-06T08:45:32.506Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98270.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/315c22712715491f0dfafdaf2c2b437540e68702"},{"type":"WEB","url":"https://git.kernel.org/stable/c/37583946d8751f8e285c467d770ac0b609b82a23"},{"type":"WEB","url":"https://git.kernel.org/stable/c/723d4dc628d764b19cf9efca14b82cca5ff020c9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b7c7f07a40037514f8e890aa00f8d7b196d680cf"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fc5f845a291fc8175e6857cd6ad042818da192e8"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98270.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98270"},{"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":"7692e1ee2446fd1940b5caa6e09779504a58881a"},{"fixed":"b7c7f07a40037514f8e890aa00f8d7b196d680cf"},{"fixed":"fc5f845a291fc8175e6857cd6ad042818da192e8"},{"fixed":"37583946d8751f8e285c467d770ac0b609b82a23"},{"fixed":"315c22712715491f0dfafdaf2c2b437540e68702"},{"fixed":"723d4dc628d764b19cf9efca14b82cca5ff020c9"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98270.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.6.0"},{"fixed":"6.6.158"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.112"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.54"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98270.json"}}],"schema_version":"1.9.0"}