{"api_version":"1","generated_at":"2026-08-29T12:12:53+00:00","cve":"CVE-2026-80694","urls":{"html":"https://cve.report/CVE-2026-80694","api":"https://cve.report/api/cve/CVE-2026-80694.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-80694","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80694"},"summary":{"title":"net: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller\n\nmtk_handle_irq_rx expects a struct mtk_eth * (matching the request_irq\ncookie), but mtk_poll_controller incorrectly passed the net_device *.\nCalling ndo_poll_controller with CONFIG_NET_POLL_CONTROLLER enabled\nwould then crash.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-28 08:16:54","updated_at":"2026-08-29 07:16:51"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"9.8","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"9.8","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/3bd58ac9ca0c552651f533c1bd280dd19ae7d4e8","name":"https://git.kernel.org/stable/c/3bd58ac9ca0c552651f533c1bd280dd19ae7d4e8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e095f249e2209674f6366f6db0383a2b96e19239","name":"https://git.kernel.org/stable/c/e095f249e2209674f6366f6db0383a2b96e19239","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/276f1f180f55d56cf5992a581e20ed2b3dfa6ced","name":"https://git.kernel.org/stable/c/276f1f180f55d56cf5992a581e20ed2b3dfa6ced","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7eb46318d53940dab63dea7130e720b67a656104","name":"https://git.kernel.org/stable/c/7eb46318d53940dab63dea7130e720b67a656104","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80694","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80694","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8186f6e382d8719d0a4bc0ef218c4dd7cf55b496 3bd58ac9ca0c552651f533c1bd280dd19ae7d4e8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8186f6e382d8719d0a4bc0ef218c4dd7cf55b496 276f1f180f55d56cf5992a581e20ed2b3dfa6ced git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8186f6e382d8719d0a4bc0ef218c4dd7cf55b496 7eb46318d53940dab63dea7130e720b67a656104 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8186f6e382d8719d0a4bc0ef218c4dd7cf55b496 e095f249e2209674f6366f6db0383a2b96e19239 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.8","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.8 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.103 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.44 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.8 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"80694","cve":"CVE-2026-80694","epss":"0.001680000","percentile":"0.062650000","score_date":"2026-08-28","updated_at":"2026-08-29 00:12:17"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/ethernet/mediatek/mtk_eth_soc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"3bd58ac9ca0c552651f533c1bd280dd19ae7d4e8","status":"affected","version":"8186f6e382d8719d0a4bc0ef218c4dd7cf55b496","versionType":"git"},{"lessThan":"276f1f180f55d56cf5992a581e20ed2b3dfa6ced","status":"affected","version":"8186f6e382d8719d0a4bc0ef218c4dd7cf55b496","versionType":"git"},{"lessThan":"7eb46318d53940dab63dea7130e720b67a656104","status":"affected","version":"8186f6e382d8719d0a4bc0ef218c4dd7cf55b496","versionType":"git"},{"lessThan":"e095f249e2209674f6366f6db0383a2b96e19239","status":"affected","version":"8186f6e382d8719d0a4bc0ef218c4dd7cf55b496","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/ethernet/mediatek/mtk_eth_soc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.8"},{"lessThan":"4.8","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.103","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.44","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.8","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.103","versionStartIncluding":"4.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.44","versionStartIncluding":"4.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.8","versionStartIncluding":"4.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"4.8","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller\n\nmtk_handle_irq_rx expects a struct mtk_eth * (matching the request_irq\ncookie), but mtk_poll_controller incorrectly passed the net_device *.\nCalling ndo_poll_controller with CONFIG_NET_POLL_CONTROLLER enabled\nwould then crash."}],"metrics":[{"cvssV3_1":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"scenarios":[{"lang":"en","value":"AV:N - The bug is only reachable via ndo_poll_controller called from netpoll during netconsole transmit polling on the mtk netdev; on MediaTek routers/gateways with netconsole on the primary ethernet interface, remote network traffic that triggers kernel logging and netpoll send retries can invoke the corrupt path without local access.\nAC:L - Once netconsole is bound to the mtk interface, netpoll_poll_dev calls mtk_poll_controller deterministically during log transmission and skb allocation retries, without races or attacker-dependent timing beyond routine network activity.\nPR:N - Exploitation requires no attacker credentials or capabilities; only an administrator-preconfigured netconsole target on the mtk netdev (an environmental prerequisite), after which any unprivileged remote party can trigger the path by causing kernel log emission.\nUI:N - No victim user action is required beyond normal system operation; triggering relies on automated kernel logging and netpoll activity, not on a user opening files, mounting filesystems, or interacting with the UI.\nS:U - Impact is confined to kernel memory corruption and crash within the same kernel security authority; this is not a VM escape, sandbox breakout, or cross-authority boundary violation.\nC:H - Casting net_device to mtk_eth causes reads of attacker-influenced adjacent memory through napi_schedule_prep and potential MMIO via a misinterpreted soc/base pointer, constituting exploitable type confusion rather than a bounded NULL dereference.\nI:H - The mistyped pointer causes an unconditional increment at the mtk_eth rx_events offset (writing into net_device/adjacent heap memory) and may corrupt or schedule a bogus NAPI structure, giving memory corruption primitives.\nA:H - The fix commit and handler logic confirm the mistyped pointer leads to invalid structure access and likely kernel oops/panic when netpoll_controller is invoked, causing complete loss of availability on affected devices."}]}],"providerMetadata":{"dateUpdated":"2026-08-29T06:22:18.328Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/3bd58ac9ca0c552651f533c1bd280dd19ae7d4e8"},{"url":"https://git.kernel.org/stable/c/276f1f180f55d56cf5992a581e20ed2b3dfa6ced"},{"url":"https://git.kernel.org/stable/c/7eb46318d53940dab63dea7130e720b67a656104"},{"url":"https://git.kernel.org/stable/c/e095f249e2209674f6366f6db0383a2b96e19239"}],"title":"net: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-80694","datePublished":"2026-08-28T06:53:00.442Z","dateReserved":"2026-08-26T14:34:25.785Z","dateUpdated":"2026-08-29T06:22:18.328Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-28 08:16:54","lastModifiedDate":"2026-08-29 07:16:51","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"80694","Ordinal":"1","Title":"net: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in pol","CVE":"CVE-2026-80694","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"80694","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller\n\nmtk_handle_irq_rx expects a struct mtk_eth * (matching the request_irq\ncookie), but mtk_poll_controller incorrectly passed the net_device *.\nCalling ndo_poll_controller with CONFIG_NET_POLL_CONTROLLER enabled\nwould then crash.","Type":"Description","Title":"net: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in pol"}]}}}