CVE-2026-90354— wifi: mt76: mt7915: fix double hif2 init on the non-WED path
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，以下漏洞已修复： wifi: mt76: mt7915: 修复非 WED 路径下 hif2 的重复初始化问题 mt7915_pci_init_hif2() 此前被无条件调用，并且在 WED 未激活分支中再次被调用。该辅助函数会递增全局的 hif_idx，向 PCIe RECOG_ID 寄存器写入数据，并通过 mt7915_pci_get_hif2() 获取一个设备引用。然而，设备移除时仅释放一个引用。在非 WED 双 hif 硬件上，这导致了 hif_idx 被双重递增、RECOG_ID 被
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 14
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | cacdd67812c6df824704ac078f1770188a485ff9< eac18fadc791928379b179e54636494b92f8cf86 |
affected |
cacdd67812c6df824704ac078f1770188a485ff9< 927fe8c0eb8c10295bc0018c8faa4d91f8fe98c6 |
affected | ||
cacdd67812c6df824704ac078f1770188a485ff9< bd2e8f535ae35beb45a7fcc17ec9bbf8dc4db5fe |
affected | ||
cacdd67812c6df824704ac078f1770188a485ff9< 249cbaa1873550689fab136b74982cbba74c4169 |
affected | ||
cacdd67812c6df824704ac078f1770188a485ff9< 29fbc5256c2d8448f084ff179d2e5092ecd1fc54 |
affected | ||
cacdd67812c6df824704ac078f1770188a485ff9< 3ae8ad277e2819a281b0e36b55633c8515c16ce7 |
affected | ||
5.18 |
affected | ||
< 5.18 |
unaffected | ||
| … +6 more rows | |||
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I. Basic Information for CVE-2026-90354
Vulnerability Information
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Vulnerability Title
wifi: mt76: mt7915: fix double hif2 init on the non-WED path
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
wifi: mt76: mt7915: fix double hif2 init on the non-WED path
mt7915_pci_init_hif2() was called unconditionally and again inside the
WED-inactive branch. The helper increments the global hif_idx, writes the
PCIe RECOG_ID register and takes a get_device() reference via
mt7915_pci_get_hif2(), while removal only drops one reference. On non-WED
dual-hif hardware this double-incremented hif_idx, wrote RECOG_ID twice and
leaked a device reference. Only the call inside the WED-inactive branch is
correct; drop the unconditional one. hif2 is already initialised to NULL.
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-2026-90354
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-90354 (6)
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 → →
IV. Related Vulnerabilities
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Same vendor: Linux
-
CVE-2026-98384
bpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destr -
CVE-2026-98383
bpf: Disallow bpf_skb_pull_data() for LWT_SEG6LOCAL -
CVE-2026-98382
bpf: Reject dev-bound-only programs on other devices -
CVE-2026-98381
veth: manage XDP program pointers during channel resize -
CVE-2026-98380
net/sched: reject IDR error pointers when deleting actions
V. Comments for CVE-2026-90354
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