{"id":"CVE-2026-99199","kind":"vulnerability","aliases":["CVE-2026-99199"],"related":[],"title":"Linux kernel: hip04 Ethernet driver crashes at probe with shaper enabled","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: hisilicon: hip04_eth: Move setting of netops to fix crash\n\nhip04_mac_probe() calls of_phy_connect() before ndev->netdev_ops is\nassigned. phy_attach_direct() -> phy_link_topo_add_phy() reads\ndev->netdev_ops through netdev_need_ops_lock() since the commit in\nquestion, so probing crashes with a NULL pointer dereference when\nCONFIG_NET_SHAPER is enabled.\n\nAssign netdev_ops before the PHY attach, as was done for emac in commit\n7c9f391ec89c (\"net: emac: move setting of netops to fix crash\").","summary":"In the Linux kernel's hip04_eth network driver for HiSilicon hardware, the probe path attaches the PHY before setting netdev_ops, so a NULL pointer dereference occurs when CONFIG_NET_SHAPER is enabled. The sources describe a crash during driver probe, not code execution or data theft.","severity":"unknown","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["arm","hisilicon-hardware","infrastructure","linux-kernel"],"not_affected_if":["config-net-shaper-disabled","no-hip04-hardware"],"how_to_check":"- unknown","fix":"- Apply the upstream kernel fix that assigns netdev_ops before of_phy_connect() in hip04_mac_probe(), matching the emac fix in commit 7c9f391ec89c.\n- Check that the running kernel includes that commit.","status":"open","published_at":"2026-10-28T11:17:41+00:00","first_seen_at":"2026-10-28T11:32:37+00:00","triaged_at":"2026-10-28T11:34:03+00:00","updated_at":"2026-10-28T11:34:03+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-10-28T11:34:03Z","model":"claude-haiku-5-5","output":{"fix":"- Apply the upstream kernel fix that assigns netdev_ops before of_phy_connect() in hip04_mac_probe(), matching the emac fix in commit 7c9f391ec89c.\n- Check that the running kernel includes that commit.","reach":"local","title":"Linux kernel: hip04 Ethernet driver crashes at probe with shaper enabled","impact":"low","summary":"In the Linux kernel's hip04_eth network driver for HiSilicon hardware, the probe path attaches the PHY before setting netdev_ops, so a NULL pointer dereference occurs when CONFIG_NET_SHAPER is enabled. The sources describe a crash during driver probe, not code execution or data theft.","category":"infrastructure","nicknames":[],"who_cares":["linux-kernel","hisilicon-hardware","arm"],"confidence":0.5,"needs_auth":"no","worst_case":"Kernel NULL pointer dereference crashes the machine during driver probe","analyst_note":"Check the kernel stable or NVD record for the fixed kernel versions and whether the crash can be triggered outside boot-time probe.","how_to_check":"- unknown","needs_analyst":true,"not_affected_if":["no-hip04-hardware","config-net-shaper-disabled"],"who_is_affected":"Only systems running the Linux kernel with the hip04_eth driver (HiSilicon hip04 Ethernet hardware, typically older ARM server or set-top boards) and CONFIG_NET_SHAPER enabled are exposed to the probe crash. Teams on x86 servers, cloud VMs or other NIC drivers can skip it.","user_interaction":"no","needs_special_setup":"yes","severity_if_unknown":"unknown"},"cost_usd":0.000649,"input_tokens":3454,"output_tokens":607,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2026':13A,16A '-99199':14A,17A '7c9f391ec89c':158C 'add':114C 'arm':18B 'assign':107C,144C 'attach':41B,109C,150C 'call':98C 'code':69B 'commit':127C,157C 'config':55B,139C 'connect':101C 'crash':6A,64B,94C,132C,167C 'cve':12A,15A 'data':72B 'derefer':52B,137C 'describ':62B 'dev':117C 'direct':110C 'done':153C 'driver':5A,34B,66B 'emac':155C,160C 'enabl':11A,59B,143C 'eth':32B,87C 'ethernet':4A 'execut':70B 'fix':93C,166C 'follow':79C 'hardwar':21B,37B 'hip04':3A,31B,86C,95C 'hisilicon':20B,36B,85C 'hisilicon-hardwar':19B 'infrastructur':22B 'kernel':2A,25B,29B,77C 'link':112C 'linux':1A,24B,28B,76C 'linux-kernel':23B 'lock':124C 'mac':96C 'move':88C,161C 'ndev':103C 'need':122C 'net':56B,84C,140C,159C 'netdev':46B,104C,118C,121C,145C 'netop':91C,164C 'network':33B 'null':50B,135C 'occur':53B 'op':47B,105C,119C,123C,146C 'path':40B 'phi':43B,100C,108C,111C,115C,149C 'pointer':51B,136C 'probe':8A,39B,67B,97C,131C 'question':129C 'read':116C 'resolv':83C 'set':45B,89C,162C 'shaper':10A,57B,141C 'sinc':125C 'sourc':61B 'theft':73B 'topo':113C 'vulner':80C","nicknames":[],"mitigations":[],"who_affected":"Only systems running the Linux kernel with the hip04_eth driver (HiSilicon hip04 Ethernet hardware, typically older ARM server or set-top boards) and CONFIG_NET_SHAPER enabled are exposed to the probe crash. Teams on x86 servers, cloud VMs or other NIC drivers can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-28T11:17:41+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-99199","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-99199","severity":null,"published_at":"2026-10-28T11:17:41+00:00","modified_at":"2026-10-28T11:17:41+00:00","first_seen_at":"2026-10-28T11:32:37+00:00","fetched_at":"2026-10-28T11:32:37+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"}