CVE-2026-99060 (GCVE-0-2026-99060)
Vulnerability from cvelistv5 – Published: 2026-10-23 12:22 – Updated: 2026-10-23 12:22
VLAI
EPSS
VEX
Title
wifi: mt76: mt7603: initialize global station WCID
Summary
In the Linux kernel, the following vulnerability has been resolved:
wifi: mt76: mt7603: initialize global station WCID
mt7603 uses a driver-private global station WCID for frames that have
neither a station nor a vif, including frames injected through a monitor
interface. Unlike the core global WCID initialized by
mt76_register_device(), this WCID is published without ever being passed
to mt76_wcid_init().
Since commit 0335c034e726 ("wifi: mt76: fix race condition related to
checking tx queue fill status"), mt76_tx() queues every such frame on the
WCID's tx_pending or tx_offchannel queue and links its tx_list. The first
injected frame therefore reaches __skb_queue_tail() with an uninitialized
sk_buff_head and dereferences a NULL prev pointer.
Initialize the WCID before publishing it.
The fix was tested on an MT7603 PCIe device. Three wildcard probe requests
were injected through a monitor interface. The hardware queue head and tail
advanced from 0 to 3 and a second radio captured the third request over the
air. No oops or reset occurred. After restoring AP mode, a 150 MB transfer
also completed without a reset.
Severity
No CVSS data available.
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
d2defcddfe90b3be0cfccc2482495ab1fb759586 , < 99b8bd6323e6fc69615af828522878b7acb77bff
(git)
Affected: 0335c034e7265d36d956e806f33202c94a8a9860 , < e454ec553996f21085657c96c8a605e2d89a81a6 (git) Affected: 0335c034e7265d36d956e806f33202c94a8a9860 , < dd117d17e8aa2e89f857fb708e5b770709fb81cb (git) Affected: 0335c034e7265d36d956e806f33202c94a8a9860 , < 19d6fa087dcf242223645828b8282d4040bad168 (git) Affected: 0335c034e7265d36d956e806f33202c94a8a9860 , < 456de496b53ae73e6e3020fec815dbdc88aa7c07 (git) Affected: 6.6.48 , < 6.6.160 (semver) |
guessed | |
| Linux | Linux |
Affected:
6.7
Unaffected: 0 , < 6.7 (semver) Unaffected: 6.6.160 , ≤ 6.6.* (semver) Unaffected: 6.12.113 , ≤ 6.12.* (semver) Unaffected: 6.18.57 , ≤ 6.18.* (semver) Unaffected: 7.2.11 , ≤ 7.2.* (semver) Unaffected: 7.3 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/net/wireless/mediatek/mt76/mt7603/init.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "99b8bd6323e6fc69615af828522878b7acb77bff",
"status": "affected",
"version": "d2defcddfe90b3be0cfccc2482495ab1fb759586",
"versionType": "git"
},
{
"lessThan": "e454ec553996f21085657c96c8a605e2d89a81a6",
"status": "affected",
"version": "0335c034e7265d36d956e806f33202c94a8a9860",
"versionType": "git"
},
{
"lessThan": "dd117d17e8aa2e89f857fb708e5b770709fb81cb",
"status": "affected",
"version": "0335c034e7265d36d956e806f33202c94a8a9860",
"versionType": "git"
},
{
"lessThan": "19d6fa087dcf242223645828b8282d4040bad168",
"status": "affected",
"version": "0335c034e7265d36d956e806f33202c94a8a9860",
"versionType": "git"
},
{
"lessThan": "456de496b53ae73e6e3020fec815dbdc88aa7c07",
"status": "affected",
"version": "0335c034e7265d36d956e806f33202c94a8a9860",
"versionType": "git"
},
{
"lessThan": "6.6.160",
"status": "affected",
"version": "6.6.48",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/net/wireless/mediatek/mt76/mt7603/init.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.7"
},
{
"lessThan": "6.7",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.113",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.57",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"version": "7.2.11",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.160",
"versionStartIncluding": "6.6.48",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.113",
"versionStartIncluding": "6.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.57",
"versionStartIncluding": "6.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.2.11",
"versionStartIncluding": "6.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.3",
"versionStartIncluding": "6.7",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"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\u0027s 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."
}
],
"providerMetadata": {
"dateUpdated": "2026-10-23T12:22:49.164Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"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"
}
],
"title": "wifi: mt76: mt7603: initialize global station WCID",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-99060",
"datePublished": "2026-10-23T12:22:49.164Z",
"dateReserved": "2026-09-25T10:25:14.388Z",
"dateUpdated": "2026-10-23T12:22:49.164Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-99060",
"date": "2026-10-25",
"epss": "0.00168",
"percentile": "0.06108"
},
"microsoft_vex": {
"current_release_date": "2026-10-25T01:05:59.000Z",
"cve": "CVE-2026-99060",
"id": "msrc_CVE-2026-99060",
"initial_release_date": "2026-10-25T01:05:59.000Z",
"product_status:under_investigation": "1",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "wifi: mt76: mt7603: initialize global station WCID",
"url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-99060.json",
"version": "1"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/net/wireless/mediatek/mt76/mt7603/init.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "99b8bd6323e6fc69615af828522878b7acb77bff",
"status": "affected",
"version": "d2defcddfe90b3be0cfccc2482495ab1fb759586",
"versionType": "git"
},
{
"lessThan": "e454ec553996f21085657c96c8a605e2d89a81a6",
"status": "affected",
"version": "0335c034e7265d36d956e806f33202c94a8a9860",
"versionType": "git"
},
{
"lessThan": "dd117d17e8aa2e89f857fb708e5b770709fb81cb",
"status": "affected",
"version": "0335c034e7265d36d956e806f33202c94a8a9860",
"versionType": "git"
},
{
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"status": "affected",
"version": "0335c034e7265d36d956e806f33202c94a8a9860",
"versionType": "git"
},
{
"lessThan": "456de496b53ae73e6e3020fec815dbdc88aa7c07",
"status": "affected",
"version": "0335c034e7265d36d956e806f33202c94a8a9860",
"versionType": "git"
},
{
"lessThan": "6.6.160",
"status": "affected",
"version": "6.6.48",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/net/wireless/mediatek/mt76/mt7603/init.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.7"
},
{
"lessThan": "6.7",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.113",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.57",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"version": "7.2.11",
"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: 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\u0027s 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."
}
],
"id": "CVE-2026-99060",
"lastModified": "2026-10-23T13:17:29.753",
"metrics": {},
"published": "2026-10-23T13:17:29.753",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/19d6fa087dcf242223645828b8282d4040bad168"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/456de496b53ae73e6e3020fec815dbdc88aa7c07"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/99b8bd6323e6fc69615af828522878b7acb77bff"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/dd117d17e8aa2e89f857fb708e5b770709fb81cb"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/e454ec553996f21085657c96c8a605e2d89a81a6"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received"
}
}
}
}
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| Author | Source | Type | Date | Other |
|---|
Nomenclature
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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