CVE-2026-90356

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-90356", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.806Z", "datePublished": "2026-09-17T16:09:02.189Z", "dateUpdated": "2026-10-19T09:02:12.676Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:02:12.676Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: free vif links after clearing wcid entries on full reset\n\nmt7996_mac_reset_vif_iter() queues non-default vif links for kfree_rcu\nwhile dev->wcid[] still holds pointers to the wcid embedded in each\nfreed link; mt76_reset_device() then dereferences those entries and\nruns mt76_wcid_cleanup() on them. If a grace period elapses in between,\nthe cleanup operates on freed memory.\n\nRun mt76_reset_device() first, so the wcid entries are cleaned up and\ncleared while the links are still valid."}], "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/mt7996/mac.c"], "versions": [{"version": "ace5d3b6b49e8391beb4d7244348ba7da5298878", "lessThan": "2b10eb3636d0c4cb6b763e045ec1294dbd70f5ad", "status": "affected", "versionType": "git"}, {"version": "ace5d3b6b49e8391beb4d7244348ba7da5298878", "lessThan": "8826d7a5e2dd727aa96456ccd58b33d2b080e935", "status": "affected", "versionType": "git"}, {"version": "ace5d3b6b49e8391beb4d7244348ba7da5298878", "lessThan": "7e4208e9f6a876c2b7d28fdb6b86dff3b05db2f7", "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/mt7996/mac.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/2b10eb3636d0c4cb6b763e045ec1294dbd70f5ad"}, {"url": "https://git.kernel.org/stable/c/8826d7a5e2dd727aa96456ccd58b33d2b080e935"}, {"url": "https://git.kernel.org/stable/c/7e4208e9f6a876c2b7d28fdb6b86dff3b05db2f7"}], "title": "wifi: mt76: mt7996: free vif links after clearing wcid entries on full reset", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/wireless/mediatek/mt76/mt7996/mac.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "2b10eb3636d0c4cb6b763e045ec1294dbd70f5ad", "status": "affected", "version": "ace5d3b6b49e8391beb4d7244348ba7da5298878", "versionType": "git"}, {"lessThan": "8826d7a5e2dd727aa96456ccd58b33d2b080e935", "status": "affected", "version": "ace5d3b6b49e8391beb4d7244348ba7da5298878", "versionType": "git"}, {"lessThan": "7e4208e9f6a876c2b7d28fdb6b86dff3b05db2f7", "status": "affected", "version": "ace5d3b6b49e8391beb4d7244348ba7da5298878", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/wireless/mediatek/mt76/mt7996/mac.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: mt7996: free vif links after clearing wcid entries on full reset\n\nmt7996_mac_reset_vif_iter() queues non-default vif links for kfree_rcu\nwhile dev->wcid[] still holds pointers to the wcid embedded in each\nfreed link; mt76_reset_device() then dereferences those entries and\nruns mt76_wcid_cleanup() on them. If a grace period elapses in between,\nthe cleanup operates on freed memory.\n\nRun mt76_reset_device() first, so the wcid entries are cleaned up and\ncleared while the links are still valid."}], "id": "CVE-2026-90356", "lastModified": "2026-10-19T09:19:29.593", "metrics": {}, "published": "2026-09-17T17:17:34.480", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2b10eb3636d0c4cb6b763e045ec1294dbd70f5ad"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7e4208e9f6a876c2b7d28fdb6b86dff3b05db2f7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8826d7a5e2dd727aa96456ccd58b33d2b080e935"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ace5d3b6b49e8391beb4d7244348ba7da5298878,2b10eb3636d0c4cb6b763e045ec1294dbd70f5ad)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ace5d3b6b49e8391beb4d7244348ba7da5298878,8826d7a5e2dd727aa96456ccd58b33d2b080e935)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ace5d3b6b49e8391beb4d7244348ba7da5298878,7e4208e9f6a876c2b7d28fdb6b86dff3b05db2f7)"}}], "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"}}, {"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": "2026-09-19T04:30:16.706656+00:00", "updated": "2026-09-19T07:30:16.932129+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-416"]}