{"id":"CVE-2026-90350","state":"PUBLISHED","title":"wifi: mt76: reject out-of-range link ids in mt76_vif_link()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: reject out-of-range link ids in mt76_vif_link()\n\nmt76_vif_link() indexes mvif->link[] without validating link_id, but\ncallers pass mvif->deflink_id / msta->deflink_id, which hold\nIEEE80211_LINK_UNSPECIFIED (0xf) until the first link has been added.\nSince IEEE80211_MLD_MAX_NUM_LINKS is 15, that reads one element past the\nend of the array, aliasing mt76_vif_data.offchannel_link.\n\nReachable via mt7996_set_tsf()/mt7996_offset_tsf() and\nmt7996_net_fill_forward_path(). Bounds check link_id and return NULL,\nmatching mt7996_sta_link() and mt7996_sta_link_protected().","publishedAt":"2026-09-17T16:08:58.226Z","updatedAt":"2026-10-19T09:02:06.980Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a9384b36a42afc2d715eb74c19a7ee558f09ef82","status":"affected","lessThan":"13f6a9c786022d5213e84d494cc8717c378f5395","versionType":"git"},{"version":"a9384b36a42afc2d715eb74c19a7ee558f09ef82","status":"affected","lessThan":"c1442c345ca8da857fadea1d0797b97347ab6984","versionType":"git"},{"version":"a9384b36a42afc2d715eb74c19a7ee558f09ef82","status":"affected","lessThan":"9ba744a28c26eaa5cae930688a22e01888395308","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/mediatek/mt76/mt76.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.15","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/mediatek/mt76/mt76.h"]}],"references":["https://git.kernel.org/stable/c/13f6a9c786022d5213e84d494cc8717c378f5395","https://git.kernel.org/stable/c/c1442c345ca8da857fadea1d0797b97347ab6984","https://git.kernel.org/stable/c/9ba744a28c26eaa5cae930688a22e01888395308"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/90xxx/CVE-2026-90350.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90350","state":"PUBLISHED","datePublished":"2026-09-17T16:08:58.226Z","dateUpdated":"2026-10-19T09:02:06.980Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.805Z"},"containers":{"cna":{"title":"wifi: mt76: reject out-of-range link ids in mt76_vif_link()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: reject out-of-range link ids in mt76_vif_link()\n\nmt76_vif_link() indexes mvif->link[] without validating link_id, but\ncallers pass mvif->deflink_id / msta->deflink_id, which hold\nIEEE80211_LINK_UNSPECIFIED (0xf) until the first link has been added.\nSince IEEE80211_MLD_MAX_NUM_LINKS is 15, that reads one element past the\nend of the array, aliasing mt76_vif_data.offchannel_link.\n\nReachable via mt7996_set_tsf()/mt7996_offset_tsf() and\nmt7996_net_fill_forward_path(). Bounds check link_id and return NULL,\nmatching mt7996_sta_link() and mt7996_sta_link_protected()."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a9384b36a42afc2d715eb74c19a7ee558f09ef82","status":"affected","lessThan":"13f6a9c786022d5213e84d494cc8717c378f5395","versionType":"git"},{"version":"a9384b36a42afc2d715eb74c19a7ee558f09ef82","status":"affected","lessThan":"c1442c345ca8da857fadea1d0797b97347ab6984","versionType":"git"},{"version":"a9384b36a42afc2d715eb74c19a7ee558f09ef82","status":"affected","lessThan":"9ba744a28c26eaa5cae930688a22e01888395308","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/mediatek/mt76/mt76.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.15","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/mediatek/mt76/mt76.h"]}],"references":[{"url":"https://git.kernel.org/stable/c/13f6a9c786022d5213e84d494cc8717c378f5395"},{"url":"https://git.kernel.org/stable/c/c1442c345ca8da857fadea1d0797b97347ab6984"},{"url":"https://git.kernel.org/stable/c/9ba744a28c26eaa5cae930688a22e01888395308"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:02:06.980Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}