222 lines
12 KiB
JSON
222 lines
12 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-80694",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-08-26T14:34:25.785Z",
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"datePublished": "2026-08-28T06:53:00.442Z",
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"dateUpdated": "2026-10-30T12:30:56.887Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-30T12:30:56.887Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"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."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 9.8,
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"baseSeverity": "CRITICAL"
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},
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"scenarios": [
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{
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"lang": "en",
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"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."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/net/ethernet/mediatek/mtk_eth_soc.c"
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],
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"versions": [
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{
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"version": "8186f6e382d8719d0a4bc0ef218c4dd7cf55b496",
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"lessThan": "979a736fcac2ee32b55dafa6766188aa8b6927a4",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "8186f6e382d8719d0a4bc0ef218c4dd7cf55b496",
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"lessThan": "a9133c4d335e48ba92f4daed10c506378924f976",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "8186f6e382d8719d0a4bc0ef218c4dd7cf55b496",
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"lessThan": "3bd58ac9ca0c552651f533c1bd280dd19ae7d4e8",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "8186f6e382d8719d0a4bc0ef218c4dd7cf55b496",
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"lessThan": "276f1f180f55d56cf5992a581e20ed2b3dfa6ced",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "8186f6e382d8719d0a4bc0ef218c4dd7cf55b496",
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"lessThan": "7eb46318d53940dab63dea7130e720b67a656104",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "8186f6e382d8719d0a4bc0ef218c4dd7cf55b496",
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"lessThan": "e095f249e2209674f6366f6db0383a2b96e19239",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/net/ethernet/mediatek/mtk_eth_soc.c"
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],
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"versions": [
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{
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"version": "4.8",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "4.8",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.191",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.160",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.103",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.44",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.1.8",
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"lessThanOrEqual": "7.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.8",
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"versionEndExcluding": "6.1.191"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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}
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/979a736fcac2ee32b55dafa6766188aa8b6927a4"
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},
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{
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"url": "https://git.kernel.org/stable/c/a9133c4d335e48ba92f4daed10c506378924f976"
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},
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{
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"url": "https://git.kernel.org/stable/c/3bd58ac9ca0c552651f533c1bd280dd19ae7d4e8"
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},
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{
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"url": "https://git.kernel.org/stable/c/276f1f180f55d56cf5992a581e20ed2b3dfa6ced"
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},
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{
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"url": "https://git.kernel.org/stable/c/7eb46318d53940dab63dea7130e720b67a656104"
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},
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{
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"url": "https://git.kernel.org/stable/c/e095f249e2209674f6366f6db0383a2b96e19239"
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}
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],
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"title": "net: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller",
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"x_generator": {
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"engine": "bippy-1.2.0"
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} |