CVE-2026-90372— wifi: mt76: mt7915: avoid nss underflow in mt7915_mcu_get_sta_nss
Quick assessment
Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
在 Linux 内核中，已解决以下漏洞： wifi: mt76: mt7915: 避免在 mt7915_mcu_get_sta_nss 中出现 nss 下溢 如果某个对等端（peer）的 VHT/HE MCS 映射中没有任何受支持的空间流（即所有字段均为 0x3），则循环会以 nss == 0 结束，该函数随后会返回 (u8)-1（即 255）。这个值随后被写入固件的 sta_rec_bf 波束成形（beamforming）字段中。修复方法是将对结果进行截断（clamp），限制为 0。
Possible ATT&CK Techniques 1 AI
T1558 · Steal or Forge Kerberos TicketsAffected Version Matrix 18
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 89029a85482cbcf68026a89fc974e8f6898d6b37< 2801477c36a19be4f549fe60e54995f03b0ea7b9 |
affected |
89029a85482cbcf68026a89fc974e8f6898d6b37< 38f4d6323bcd65e41a691432eddabd2b03acdeee |
affected | ||
89029a85482cbcf68026a89fc974e8f6898d6b37< 25f753f7f620955a8a51e63e445d8b9076c51396 |
affected | ||
89029a85482cbcf68026a89fc974e8f6898d6b37< e63c6291ecddf94769ab91f9d8cdb6ca939f7fc6 |
affected | ||
89029a85482cbcf68026a89fc974e8f6898d6b37< 85bd46ab7674b6d357f9a14791352c65fb09eee9 |
affected | ||
89029a85482cbcf68026a89fc974e8f6898d6b37< 6ce78d04c7ea4b66838941b5a4232dd1ee0e2cc7 |
affected | ||
89029a85482cbcf68026a89fc974e8f6898d6b37< ecfd1a07e78c31d81322fb2d81dc468081cc3004 |
affected | ||
89029a85482cbcf68026a89fc974e8f6898d6b37< 4a2f4be532e3ea4e2b536e411793a05aaa51af25 |
affected | ||
| … +10 more rows | |||
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I. Basic Information for CVE-2026-90372
Vulnerability Information
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Vulnerability Title
wifi: mt76: mt7915: avoid nss underflow in mt7915_mcu_get_sta_nss
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
wifi: mt76: mt7915: avoid nss underflow in mt7915_mcu_get_sta_nss
If a peer's VHT/HE MCS map has no supported spatial stream (all fields
0x3), the loop exits with nss == 0 and the function returned (u8)-1 (255),
which was then written into the firmware sta_rec_bf beamforming fields.
Clamp the result to 0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-90372
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Patches & Fixes for CVE-2026-90372 (8)
Same Patch Batch · Linux · 2026-09-17 · 600 CVEs total
| CVE-2026-92489 | 9.8 CRITICAL | xfrm: Fix skb double-free in xfrm_dev_direct_output() |
| CVE-2026-90235 | 9.8 CRITICAL | sunrpc: xprtsock: annotate shared socket callbacks with READ_ONCE/WRITE_ONCE |
| CVE-2026-90173 | 9.8 CRITICAL | smb: smbdirect: free completion queues with ib_free_cq() |
| CVE-2026-90104 | 9.8 CRITICAL | NFSv4.1: zero referring call lists before decoding |
| CVE-2026-90151 | 9.8 CRITICAL | NFSv4: remove callback IDR entry on client allocation failure |
| CVE-2026-90110 | 9.4 CRITICAL | inetpeer: randomize RB-tree node comparison using SipHash |
| CVE-2026-90230 | 9.1 CRITICAL | nvmet: fix heap out-of-bounds read in nvmet_auth_negotiate() |
| CVE-2026-90413 | 9.1 CRITICAL | IB/isert: reject login PDUs declaring more data than was received |
| CVE-2026-90414 | 9.1 CRITICAL | IB/isert: reject PDUs declaring more data than was received |
| CVE-2026-90367 | 8.8 HIGH | wifi: mt76: mt7996: hold dev->mt76.mutex while disabling tx worker in SER |
| CVE-2026-90329 | 8.8 HIGH | HID: synchronize input before cleaning up a failed probe |
| CVE-2026-93189 | 8.8 HIGH | HID: core: quiesce input in hid_hw_stop() to prevent use-after-free |
| CVE-2026-90240 | 8.8 HIGH | iommu/vt-d: Flush context cache with correct SID when tearing down aliases |
| CVE-2026-90357 | 8.8 HIGH | wifi: mt76: mt7915: unlink TWT flow if the MCU rejects the agreement |
| CVE-2026-90286 | 8.8 HIGH | drm/amdgpu/gfx6: Use PFP on the compute queues too |
| CVE-2026-93042 | 8.8 HIGH | dmaengine: dw-edma: Terminate all descriptors without callbacks |
| CVE-2026-90381 | 8.8 HIGH | wifi: mt76: fix handling channel context with different bands in mt76_switch_vif_chanctx() |
| CVE-2026-90380 | 8.8 HIGH | wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete |
| CVE-2026-90371 | 8.8 HIGH | wifi: mt76: fix RXDMAD_C buffer recycling race |
| CVE-2026-90255 | 8.8 HIGH | Bluetooth: hci_conn: fix the SCO setup context lifetime |
Showing top 20 of 600 CVEs. View all on vendor page → →
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V. Comments for CVE-2026-90372
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