{"id":"CVE-2026-43603","kind":"vulnerability","aliases":["CVE-2026-43603"],"related":[],"title":"Linux GPU driver: NULL pointer dereference can crash the kernel","description":"A NULL pointer dereference in the Linux GPU driver could potentially lead to a kernel crash and result in denial of service.","summary":"A NULL pointer dereference in the Linux GPU driver can cause a kernel crash. An attacker can deny service by triggering the crash, but the sources do not say that code execution or data access is possible.","severity":"medium","cvss":6.9,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["gpu-driver","infrastructure","kernel","linux"],"not_affected_if":["no-gpu-driver-loaded"],"how_to_check":"- `uname -r` to see the running kernel version\n- Check whether the GPU driver (amdgpu, i915, nouveau or similar) is loaded with `lsmod`","fix":null,"status":"open","published_at":"2026-11-03T15:17:39+00:00","first_seen_at":"2026-11-03T15:22:02+00:00","triaged_at":"2026-11-03T15:23:09+00:00","updated_at":"2026-11-03T15:23:09+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-11-03T15:23:09Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"unknown","title":"Linux GPU driver: NULL pointer dereference can crash the kernel","impact":"low","summary":"A NULL pointer dereference in the Linux GPU driver can cause a kernel crash. An attacker can deny service by triggering the crash, but the sources do not say that code execution or data access is possible.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["linux","kernel","gpu-driver"],"confidence":0.5,"fix_status":"unknown","needs_auth":"unknown","worst_case":"Kernel crash causing denial of service on the affected host","analyst_note":"Find the affected driver and kernel version ranges and the fixed kernel commit in the NVD entry or upstream kernel advisory.","how_to_check":"- `uname -r` to see the running kernel version\n- Check whether the GPU driver (amdgpu, i915, nouveau or similar) is loaded with `lsmod`\n- unknown for the exact affected kernel ranges","plain_action":"","needs_analyst":true,"not_affected_if":["no-gpu-driver-loaded"],"who_is_affected":"Systems running a Linux kernel with the affected GPU driver code. The sources do not name the affected driver or kernel ranges, so whether a given host is exposed is unknown. Servers without a GPU driver loaded are likely unaffected, but the sources do not confirm this.","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000674,"input_tokens":4069,"output_tokens":534,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':12A,15A '-43603':13A,16A 'access':57B 'attack':38B 'caus':33B 'code':53B 'could':69C 'crash':8A,36B,45B,75C 'cve':11A,14A 'data':56B 'deni':40B 'denial':79C 'derefer':6A,26B,63C 'driver':3A,19B,31B,68C 'execut':54B 'gpu':2A,18B,30B,67C 'gpu-driv':17B 'infrastructur':20B 'kernel':10A,21B,35B,74C 'lead':71C 'linux':1A,22B,29B,66C 'null':4A,24B,61C 'pointer':5A,25B,62C 'possibl':59B 'potenti':70C 'result':77C 'say':51B 'servic':41B,81C 'sourc':48B 'trigger':43B","nicknames":[],"mitigations":[],"who_affected":"Systems running a Linux kernel with the affected GPU driver code. The sources do not name the affected driver or kernel ranges, so whether a given host is exposed is unknown. Servers without a GPU driver loaded are likely unaffected, but the sources do not confirm this.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["gpudriver","infrastructure","kernel","linux","medium"],"first_public_at":"2026-11-03T15:17:39+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_by":"psirt@amd.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-43603","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43603","severity":null,"published_at":"2026-11-03T15:17:39+00:00","modified_at":"2026-11-03T15:17:39+00:00","first_seen_at":"2026-11-03T15:22:02+00:00","fetched_at":"2026-11-03T15:22:02+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"}