CVE-2026-90371

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-90371", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.808Z", "datePublished": "2026-09-17T16:09:12.046Z", "dateUpdated": "2026-10-19T09:02:30.177Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:02:30.177Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: fix RXDMAD_C buffer recycling race\n\nThe RXDMAD_C buffers come from the RRO data queues' page pools, which are\nbound to a different NAPI, so the direct page-pool recycle used here could\nrace the owning NAPI; take the non-direct path as is already done for WED\nRX queues."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:A - Received 802.11 frames are completed by HW-RRO v3.1 into the RXDMAD_C ring; mt7996_irq_handler/mt7996_irq_tasklet schedules napi[MT_RXQ_RRO_RXDMAD_C] and mt76_dma_rx_poll\u2192mt76_dma_rx_process\u2192mt76_dma_get_rxdmad_c_buf recycles those payload pages. A radio-range peer supplies the frames; WiFi is adjacent, not a routable IP transport.\nAC:L - The attacker drives both NAPIs by flooding 802.11 traffic: the RRO data-queue NAPI runs mt76_dma_rx_fill\u2192page_pool_alloc_frag on the owning pool, while RXDMAD_C drops completions (SDL0 vs SKB_WITH_OVERHEAD of MT7996_RX_BUF_SIZE, or extra frags in mt76_add_fragment) and calls mt76_put_page_pool_buf(..., true) into the same unlocked alloc.cache.\nPR:N - mt76_dma_get_rxdmad_c_buf runs on the WiFi RX DMA completion path with no host credential check; a nearby unauthenticated station can send frames that HW-RRO v3.1 writes into RXDMAD_C (rx_token_id/SDL0) without any kernel account.\nUI:N - With the mt7996/mt7992 interface already up in HWRRO v3.1, the attacker triggers mt76_dma_rx_process on MT_RXQ_RRO_RXDMAD_C solely by transmitting frames; no mount, click, or other victim action is required.\nS:U - The race corrupts the host kernel page_pool alloc.cache for the RRO data queues (dev->q_rx[t->qid]->page_pool) in the same kernel; it does not cross a VM, IOMMU, or guest/host boundary.\nC:H - Concurrent lockless updates of pool->alloc.cache/count in page_pool_recycle_in_cache versus page_pool_alloc_frag can issue the same RX page twice or return a stale pointer, a use-after-free of packet buffers that enables disclosure of kernel or packet memory.\nI:H - The same unlocked recycle can bump alloc.count past PP_ALLOC_CACHE_SIZE so a later page_pool_recycle_in_cache writes a netmem pointer out of bounds, and a double-issued page lets attacker-controlled 802.11 DMA clobber reused kernel memory.\nA:H - A corrupted page_pool alloc.cache yields invalid page pointers and use-after-free in mt76_dma_rx_fill/mt76_dma_rx_process, which oopses or panics the kernel."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wireless/mediatek/mt76/dma.c"], "versions": [{"version": "e50d4d710efd2dbc46965e9608bbb502bcfc5c99", "lessThan": "7ac05ed3a50e511c93f8506e555709a208dfce0a", "status": "affected", "versionType": "git"}, {"version": "e50d4d710efd2dbc46965e9608bbb502bcfc5c99", "lessThan": "a273dc3b86a7d983d643827d3d3c795d55d8f632", "status": "affected", "versionType": "git"}, {"version": "e50d4d710efd2dbc46965e9608bbb502bcfc5c99", "lessThan": "e1f97c10a4ec2b9db69a134b757304399ca903ce", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wireless/mediatek/mt76/dma.c"], "versions": [{"version": "6.18", "status": "affected"}, {"version": "0", "lessThan": "6.18", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.52", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/7ac05ed3a50e511c93f8506e555709a208dfce0a"}, {"url": "https://git.kernel.org/stable/c/a273dc3b86a7d983d643827d3d3c795d55d8f632"}, {"url": "https://git.kernel.org/stable/c/e1f97c10a4ec2b9db69a134b757304399ca903ce"}], "title": "wifi: mt76: fix RXDMAD_C buffer recycling race", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/wireless/mediatek/mt76/dma.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "7ac05ed3a50e511c93f8506e555709a208dfce0a", "status": "affected", "version": "e50d4d710efd2dbc46965e9608bbb502bcfc5c99", "versionType": "git"}, {"lessThan": "a273dc3b86a7d983d643827d3d3c795d55d8f632", "status": "affected", "version": "e50d4d710efd2dbc46965e9608bbb502bcfc5c99", "versionType": "git"}, {"lessThan": "e1f97c10a4ec2b9db69a134b757304399ca903ce", "status": "affected", "version": "e50d4d710efd2dbc46965e9608bbb502bcfc5c99", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/wireless/mediatek/mt76/dma.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.18"}, {"lessThan": "6.18", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.52", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: fix RXDMAD_C buffer recycling race\n\nThe RXDMAD_C buffers come from the RRO data queues' page pools, which are\nbound to a different NAPI, so the direct page-pool recycle used here could\nrace the owning NAPI; take the non-direct path as is already done for WED\nRX queues."}], "id": "CVE-2026-90371", "lastModified": "2026-10-19T09:19:31.070", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-09-17T17:17:36.263", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7ac05ed3a50e511c93f8506e555709a208dfce0a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a273dc3b86a7d983d643827d3d3c795d55d8f632"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e1f97c10a4ec2b9db69a134b757304399ca903ce"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e50d4d710efd2dbc46965e9608bbb502bcfc5c99,7ac05ed3a50e511c93f8506e555709a208dfce0a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e50d4d710efd2dbc46965e9608bbb502bcfc5c99,a273dc3b86a7d983d643827d3d3c795d55d8f632)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e50d4d710efd2dbc46965e9608bbb502bcfc5c99,e1f97c10a4ec2b9db69a134b757304399ca903ce)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[6.18,6.18]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.18)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.52,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.6,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-19T05:30:17.827460+00:00", "updated": "2026-09-20T02:30:17.210791+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-362"]}