{"id":"CVE-2026-99060","state":"PUBLISHED","title":"wifi: mt76: mt7603: initialize global station WCID","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7603: initialize global station WCID\n\nmt7603 uses a driver-private global station WCID for frames that have\nneither a station nor a vif, including frames injected through a monitor\ninterface. Unlike the core global WCID initialized by\nmt76_register_device(), this WCID is published without ever being passed\nto mt76_wcid_init().\n\nSince commit 0335c034e726 (\"wifi: mt76: fix race condition related to\nchecking tx queue fill status\"), mt76_tx() queues every such frame on the\nWCID's tx_pending or tx_offchannel queue and links its tx_list. The first\ninjected frame therefore reaches __skb_queue_tail() with an uninitialized\nsk_buff_head and dereferences a NULL prev pointer.\n\nInitialize the WCID before publishing it.\n\nThe fix was tested on an MT7603 PCIe device. Three wildcard probe requests\nwere injected through a monitor interface. The hardware queue head and tail\nadvanced from 0 to 3 and a second radio captured the third request over the\nair. No oops or reset occurred. After restoring AP mode, a 150 MB transfer\nalso completed without a reset.","publishedAt":"2026-10-23T12:22:49.164Z","updatedAt":"2026-10-23T12:22:49.164Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d2defcddfe90b3be0cfccc2482495ab1fb759586","status":"affected","lessThan":"99b8bd6323e6fc69615af828522878b7acb77bff","versionType":"git"},{"version":"0335c034e7265d36d956e806f33202c94a8a9860","status":"affected","lessThan":"e454ec553996f21085657c96c8a605e2d89a81a6","versionType":"git"},{"version":"0335c034e7265d36d956e806f33202c94a8a9860","status":"affected","lessThan":"dd117d17e8aa2e89f857fb708e5b770709fb81cb","versionType":"git"},{"version":"0335c034e7265d36d956e806f33202c94a8a9860","status":"affected","lessThan":"19d6fa087dcf242223645828b8282d4040bad168","versionType":"git"},{"version":"0335c034e7265d36d956e806f33202c94a8a9860","status":"affected","lessThan":"456de496b53ae73e6e3020fec815dbdc88aa7c07","versionType":"git"},{"version":"6.6.48","status":"affected","lessThan":"6.6.160","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/mediatek/mt76/mt7603/init.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.7","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.11","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/mt7603/init.c"]}],"references":["https://git.kernel.org/stable/c/99b8bd6323e6fc69615af828522878b7acb77bff","https://git.kernel.org/stable/c/e454ec553996f21085657c96c8a605e2d89a81a6","https://git.kernel.org/stable/c/dd117d17e8aa2e89f857fb708e5b770709fb81cb","https://git.kernel.org/stable/c/19d6fa087dcf242223645828b8282d4040bad168","https://git.kernel.org/stable/c/456de496b53ae73e6e3020fec815dbdc88aa7c07"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/99xxx/CVE-2026-99060.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-99060","state":"PUBLISHED","datePublished":"2026-10-23T12:22:49.164Z","dateUpdated":"2026-10-23T12:22:49.164Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.388Z"},"containers":{"cna":{"title":"wifi: mt76: mt7603: initialize global station WCID","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7603: initialize global station WCID\n\nmt7603 uses a driver-private global station WCID for frames that have\nneither a station nor a vif, including frames injected through a monitor\ninterface. Unlike the core global WCID initialized by\nmt76_register_device(), this WCID is published without ever being passed\nto mt76_wcid_init().\n\nSince commit 0335c034e726 (\"wifi: mt76: fix race condition related to\nchecking tx queue fill status\"), mt76_tx() queues every such frame on the\nWCID's tx_pending or tx_offchannel queue and links its tx_list. The first\ninjected frame therefore reaches __skb_queue_tail() with an uninitialized\nsk_buff_head and dereferences a NULL prev pointer.\n\nInitialize the WCID before publishing it.\n\nThe fix was tested on an MT7603 PCIe device. Three wildcard probe requests\nwere injected through a monitor interface. The hardware queue head and tail\nadvanced from 0 to 3 and a second radio captured the third request over the\nair. No oops or reset occurred. After restoring AP mode, a 150 MB transfer\nalso completed without a reset."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d2defcddfe90b3be0cfccc2482495ab1fb759586","status":"affected","lessThan":"99b8bd6323e6fc69615af828522878b7acb77bff","versionType":"git"},{"version":"0335c034e7265d36d956e806f33202c94a8a9860","status":"affected","lessThan":"e454ec553996f21085657c96c8a605e2d89a81a6","versionType":"git"},{"version":"0335c034e7265d36d956e806f33202c94a8a9860","status":"affected","lessThan":"dd117d17e8aa2e89f857fb708e5b770709fb81cb","versionType":"git"},{"version":"0335c034e7265d36d956e806f33202c94a8a9860","status":"affected","lessThan":"19d6fa087dcf242223645828b8282d4040bad168","versionType":"git"},{"version":"0335c034e7265d36d956e806f33202c94a8a9860","status":"affected","lessThan":"456de496b53ae73e6e3020fec815dbdc88aa7c07","versionType":"git"},{"version":"6.6.48","status":"affected","lessThan":"6.6.160","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/mediatek/mt76/mt7603/init.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.7","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.11","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/mt7603/init.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/99b8bd6323e6fc69615af828522878b7acb77bff"},{"url":"https://git.kernel.org/stable/c/e454ec553996f21085657c96c8a605e2d89a81a6"},{"url":"https://git.kernel.org/stable/c/dd117d17e8aa2e89f857fb708e5b770709fb81cb"},{"url":"https://git.kernel.org/stable/c/19d6fa087dcf242223645828b8282d4040bad168"},{"url":"https://git.kernel.org/stable/c/456de496b53ae73e6e3020fec815dbdc88aa7c07"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-23T12:22:49.164Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.48","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.18.57"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"7.2.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}