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CVE-2026-90382— wifi: mt76: mt76x02: do not WARN on invalid rx descriptor length

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: mt76x02: 不要在无效的接收描述符长度上触发 WARN 接收（rx）描述符中的 MPDU 长度来源于硬件。在启用了 fcsfail 过滤器的监控（monitor）模式下，硬件会上报损坏的数据帧，而损坏的数据帧可能报告一个大于接收缓冲区的长度值。边界检查能正确丢弃此类数据帧，但其 包装器意味着任何空中（over-the-air）的垃圾帧都会污染内核状态，并且在设置了 的情况下，首个此类帧就会导致内核恐慌（panic）。 因此，移除该 WARN

AI Predicted 4.4 Difficulty: Moderate EPSS 0.22% · P11

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 7bc04215a66b60e198aecaee8418f6d79fa19faa< 61b1f6d92249bc34580ff19de7c69c805f82adca affected
7bc04215a66b60e198aecaee8418f6d79fa19faa< c65bbfc730df9ebf0fea8e286b0ad2dfab03dbfe affected
7bc04215a66b60e198aecaee8418f6d79fa19faa< d55e7aede542c4c76ead82d37d0c112f21eb2ac2 affected
7bc04215a66b60e198aecaee8418f6d79fa19faa< b6e7958602bd1acdb8ae92703b6689a28bcc9bc0 affected
7bc04215a66b60e198aecaee8418f6d79fa19faa< 2d31e332c13b1db7745a7bd9cf74bc105524bcac affected
7bc04215a66b60e198aecaee8418f6d79fa19faa< 17d6b89e09eac2d90272fceeba3644e92212e02f affected
7bc04215a66b60e198aecaee8418f6d79fa19faa< 6def491fe9c4e83aa8cba62d74e9d4ab751ee967 affected
7bc04215a66b60e198aecaee8418f6d79fa19faa< 81497634d9f872fd3e8b03aada55574afff6f174 affected
… +10 more rows
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I. Basic Information for CVE-2026-90382

Vulnerability Information
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Vulnerability Title
wifi: mt76: mt76x02: do not WARN on invalid rx descriptor length
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt76x02: do not WARN on invalid rx descriptor length The MPDU length in the rx descriptor comes from the hardware. In monitor mode with the fcsfail filter enabled, the hardware passes up corrupted frames, and a corrupted frame can report a length larger than the received buffer. The bounds check correctly discards such frames, but its WARN_ON_ONCE wrapper means any over-the-air garbage frame taints the kernel, and panics it on the first such frame when panic_on_warn is set. Drop the WARN and discard the frame silently, matching what commit c2d4c8723dbf ("mt76x2: remove some harmless WARN_ONs in tx status and rx path") did for the neighboring rx and tx status paths. Observed immediately on rx with an MT7612U in fcsfail monitor mode on a busy channel.
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 7bc04215a66b60e198aecaee8418f6d79fa19faa ~ 61b1f6d92249bc34580ff19de7c69c805f82adca -
Linux Linux 4.16 -

II. Public POCs for CVE-2026-90382

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III. Intelligence Information for CVE-2026-90382

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Patches & Fixes for CVE-2026-90382 (7)

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 &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-90382

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