{"id":"CVE-2026-98270","title":"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","summary":"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 amdg…","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= 7692e1ee2446fd1940b5caa6e09779504a58881a < b7c7f07a40037514f8e890aa00f8d7b196d680cf","Linux >= 7692e1ee2446fd1940b5caa6e09779504a58881a < fc5f845a291fc8175e6857cd6ad042818da192e8","Linux >= 7692e1ee2446fd1940b5caa6e09779504a58881a < 37583946d8751f8e285c467d770ac0b609b82a23","Linux >= 7692e1ee2446fd1940b5caa6e09779504a58881a < 315c22712715491f0dfafdaf2c2b437540e68702","Linux >= 7692e1ee2446fd1940b5caa6e09779504a58881a < 723d4dc628d764b19cf9efca14b82cca5ff020c9","Linux 6.6"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T09:18:16.487","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98270","references":[{"url":"https://git.kernel.org/stable/c/315c22712715491f0dfafdaf2c2b437540e68702","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/37583946d8751f8e285c467d770ac0b609b82a23","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/723d4dc628d764b19cf9efca14b82cca5ff020c9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b7c7f07a40037514f8e890aa00f8d7b196d680cf","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fc5f845a291fc8175e6857cd6ad042818da192e8","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98270.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98270"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2546509"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98270"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98270"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98270.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ingestedAt":"2026-10-06T08:50:17.425Z","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-476"],"epss":0.00168,"epssPercentile":0.06046,"slug":"CVE-2026-98270","body":"## Overview\n\nIn 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->nbio.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)\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98270.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":219081,"id":"CVE-2026-98270","ts":1791707054003,"field":"cvss","old":null,"new":"5.5"},{"seq":219080,"id":"CVE-2026-98270","ts":1791707054003,"field":"severity","old":"none","new":"medium"}]}