{"id":"CVE-2026-98785","kind":"vulnerability","aliases":["CVE-2026-98785"],"related":[],"title":"Linux kernel AMD display driver: NULL state crash during suspend and resume","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: check dc_state_create_copy() for NULL in dm_suspend\n\ndc_state_create_copy() can return NULL on allocation failure.\ndm_suspend() only conditionally skips dm_gpureset_toggle_interrupts()\nand continues execution, returning success.  dm_resume() then\ndereferences the NULL cached_dc_state in link_enc_cfg_copy() and the\nfollowing dc_state->stream_count loop, crashing during GPU reset\nrecovery.\n\nReturn -ENOMEM immediately if the copy fails, so the caller aborts\nsuspend instead of leaving a NULL cached state for resume.\n\n(cherry picked from commit 84b6d7932fdd2857795a257f9f258562a3cddcab)","summary":"The AMD display driver in the Linux kernel did not check whether a copied display state allocation succeeded during suspend. On allocation failure, resume dereferences a NULL pointer and the GPU reset recovery crashes.","severity":"unknown","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["amd-gpu","desktop","linux-kernel","runtime","workstation"],"not_affected_if":["no-amd-gpu"],"how_to_check":"- `uname -r` to see the running kernel version\n- `lsmod | grep amdgpu` to confirm the AMD GPU driver is loaded\n- Compare the running kernel against the stable kernel release that includes commit 84b6d7932fdd2857795a257f9f258562a3cddcab, unknown from the sources","fix":"- Update the Linux kernel to a stable release that includes commit 84b6d7932fdd2857795a257f9f258562a3cddcab, exact version unknown from the sources","status":"open","published_at":"2026-10-18T16:17:32+00:00","first_seen_at":"2026-10-23T21:57:16+00:00","triaged_at":"2026-10-25T05:15:19+00:00","updated_at":"2026-10-25T05:15:19+00:00","category":"runtime","confidence":0.5,"triage":{"at":"2026-10-25T05:15:19Z","model":"claude-haiku-5-5","output":{"fix":"- Update the Linux kernel to a stable release that includes commit 84b6d7932fdd2857795a257f9f258562a3cddcab, exact version unknown from the sources","reach":"local","title":"Linux kernel AMD display driver: NULL state crash during suspend and resume","impact":"low","summary":"The AMD display driver in the Linux kernel did not check whether a copied display state allocation succeeded during suspend. On allocation failure, resume dereferences a NULL pointer and the GPU reset recovery crashes.","category":"runtime","nicknames":[],"who_cares":["linux-kernel","amd-gpu","desktop","workstation"],"confidence":0.5,"needs_auth":"no","worst_case":"Kernel crash during GPU reset recovery after suspend","analyst_note":"","how_to_check":"- `uname -r` to see the running kernel version\n- `lsmod | grep amdgpu` to confirm the AMD GPU driver is loaded\n- Compare the running kernel against the stable kernel release that includes commit 84b6d7932fdd2857795a257f9f258562a3cddcab, unknown from the sources","needs_analyst":false,"not_affected_if":["no-amd-gpu"],"who_is_affected":"Systems running a Linux kernel with the AMD display (amdgpu DC) driver that can hit a memory allocation failure during suspend. The sources do not say how often that failure occurs in practice. Systems without AMD GPUs can skip it.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"low"},"cost_usd":0.000622,"input_tokens":3485,"output_tokens":547,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2026':14A,17A '-98785':15A,18A '84b6d7932fdd2857795a257f9f258562a3cddcab':159C 'abort':144C 'alloc':44B,49B,91C 'amd':3A,20B,29B 'amd-gpu':19B 'cach':113C,151C 'caller':143C 'cfg':119C 'check':38B,73C 'cherri':155C 'commit':158C 'condit':96C 'continu':103C 'copi':41B,77C,86C,120C,139C 'count':127C 'crash':8A,61B,129C 'creat':76C,85C 'cve':13A,16A 'dc':74C,83C,114C,124C 'derefer':52B,110C 'desktop':22B 'display':4A,30B,42B 'dm':81C,93C,98C,107C 'driver':5A,31B 'drm/amd/display':72C 'enc':118C 'enomem':135C 'execut':104C 'fail':140C 'failur':50B,92C 'follow':67C,123C 'gpu':21B,58B,131C 'gpureset':99C 'immedi':136C 'instead':146C 'interrupt':101C 'kernel':2A,25B,35B,65C 'leav':148C 'link':117C 'linux':1A,24B,34B,64C 'linux-kernel':23B 'loop':128C 'null':6A,54B,79C,89C,112C,150C 'pick':156C 'pointer':55B 'recoveri':60B,133C 'reset':59B,132C 'resolv':71C 'resum':12A,51B,108C,154C 'return':88C,105C,134C 'runtim':26B 'skip':97C 'state':7A,43B,75C,84C,115C,125C,152C 'stream':126C 'succeed':45B 'success':106C 'suspend':10A,47B,82C,94C,145C 'toggl':100C 'vulner':68C 'whether':39B 'workstat':27B","nicknames":[],"mitigations":[],"who_affected":"Systems running a Linux kernel with the AMD display (amdgpu DC) driver that can hit a memory allocation failure during suspend. The sources do not say how often that failure occurs in practice. Systems without AMD GPUs can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-18T16:17:32+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-98785","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98785","severity":null,"published_at":"2026-10-18T16:17:32+00:00","modified_at":"2026-10-21T13:21:46+00:00","first_seen_at":"2026-10-23T21:57:16+00:00","fetched_at":"2026-10-23T22:28:56+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}