CVE-2026-90370— wifi: mt76: mt7996: bound TLV walk in mt7996_mcu_get_chip_config
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，以下漏洞已得到修复： wifi: mt76: mt7996: mt7996_mcu_get_chip_config 中的 TLV 遍历边界检查 响应 TLV 循环使用 进行推进，但没有限制最小值，因此理论上，如果固件响应中包含一个长度为 0 的 TLV，可能会导致 CPU 无限循环（死循环），从而在设备探测（probe）过程中使 CPU 挂起。 此外，u32 类型的数据载荷（payload）也是在没有边界检查的情况下读取的。 修复措施： 拒绝过短的固定字段； 遇到长度小于头部大小或超过 sk
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 12
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 5d33053be609abfcfa9f5ca75d5554f2109aa40b< 3106f62809d45c1e6aadfad1f4d7c3f74cd53a96 |
affected |
5d33053be609abfcfa9f5ca75d5554f2109aa40b< 39aa6b853b6d69dd1fee3507efdb3c277b7c53e6 |
affected | ||
5d33053be609abfcfa9f5ca75d5554f2109aa40b< d0bb2189ade617e624f3c8f444ebb05f59bb2524 |
affected | ||
5d33053be609abfcfa9f5ca75d5554f2109aa40b< 93eaddfdd35aa6bfe570c087db4e97fb9d8a791a |
affected | ||
5d33053be609abfcfa9f5ca75d5554f2109aa40b< 44af52467e72094351a362bf69effd52f1d9c186 |
affected | ||
6.3 |
affected | ||
< 6.3 |
unaffected | ||
6.6.157≤ 6.6.* |
unaffected | ||
| … +4 more rows | |||
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I. Basic Information for CVE-2026-90370
Vulnerability Information
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Vulnerability Title
wifi: mt76: mt7996: bound TLV walk in mt7996_mcu_get_chip_config
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
wifi: mt76: mt7996: bound TLV walk in mt7996_mcu_get_chip_config
The response TLV loop advanced by tlv->len without a minimum, so a
theoretical firmware response containing a zero-length TLV could spin
forever, hanging the CPU during device probe.
The u32 payload was also read without bounds checking.
Reject a short fixed field, stop on a TLV whose length underruns the
header or overruns the skb.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-90370
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-90370 (5)
Same Patch Batch · Linux · 2026-09-17 · 600 CVEs total
| CVE-2026-90173 | 9.8 CRITICAL | smb: smbdirect: free completion queues with ib_free_cq() |
| CVE-2026-92489 | 9.8 CRITICAL | xfrm: Fix skb double-free in xfrm_dev_direct_output() |
| CVE-2026-90151 | 9.8 CRITICAL | NFSv4: remove callback IDR entry on client allocation failure |
| CVE-2026-90235 | 9.8 CRITICAL | sunrpc: xprtsock: annotate shared socket callbacks with READ_ONCE/WRITE_ONCE |
| CVE-2026-90104 | 9.8 CRITICAL | NFSv4.1: zero referring call lists before decoding |
| CVE-2026-90110 | 9.4 CRITICAL | inetpeer: randomize RB-tree node comparison using SipHash |
| 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-2026-90230 | 9.1 CRITICAL | nvmet: fix heap out-of-bounds read in nvmet_auth_negotiate() |
| CVE-2026-90255 | 8.8 HIGH | Bluetooth: hci_conn: fix the SCO setup context lifetime |
| CVE-2026-90329 | 8.8 HIGH | HID: synchronize input before cleaning up a failed probe |
| CVE-2026-90357 | 8.8 HIGH | wifi: mt76: mt7915: unlink TWT flow if the MCU rejects the agreement |
| CVE-2026-90367 | 8.8 HIGH | wifi: mt76: mt7996: hold dev->mt76.mutex while disabling tx worker in SER |
| CVE-2026-90256 | 8.8 HIGH | Bluetooth: L2CAP: use proto_lock for l2cap_data to fix l2cap_disconn_ind |
| CVE-2026-90371 | 8.8 HIGH | wifi: mt76: fix RXDMAD_C buffer recycling race |
| CVE-2026-93189 | 8.8 HIGH | HID: core: quiesce input in hid_hw_stop() to prevent use-after-free |
| CVE-2026-90425 | 8.8 HIGH | iommu/tegra241-cmdqv: Require exactly one Stream ID for a vSID |
| CVE-2026-90240 | 8.8 HIGH | iommu/vt-d: Flush context cache with correct SID when tearing down aliases |
| CVE-2026-90162 | 8.8 HIGH | ksmbd: defer publishing granted locks to prevent UAF/double-free race |
| CVE-2026-90286 | 8.8 HIGH | drm/amdgpu/gfx6: Use PFP on the compute queues too |
Showing top 20 of 600 CVEs. View all on vendor page → →
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Same vendor: Linux
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bpf: Reject dev-bound-only programs on other devices -
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V. Comments for CVE-2026-90370
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