CVE-2026-90354

Unknown

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.

SeverityUnknown

CVSS—

Exploit probability—

Product

Linux

PublishedSep 17, 2026

First seenSep 17, 2026

How to fix

Update

Linux Linuxeac18fadc791928379b179e54636494b92f8cf86, 927fe8c0eb8c10295bc0018c8faa4d91f8fe98c6, bd2e8f535ae35beb45a7fcc17ec9bbf8dc4db5fe, 249cbaa1873550689fab136b74982cbba74c4169, 29fbc5256c2d8448f084ff179d2e5092ecd1fc54, 3ae8ad277e2819a281b0e36b55633c8515c16ce7 or later

Affected products

Product	Affected versions	Fixed in
Linux Linux	cacdd67812c6df824704ac078f1770188a485ff9 ≤ v < eac18fadc791928379b179e54636494b92f8cf86, cacdd67812c6df824704ac078f1770188a485ff9 ≤ v < 927fe8c0eb8c10295bc0018c8faa4d91f8fe98c6, cacdd67812c6df824704ac078f1770188a485ff9 ≤ v < bd2e8f535ae35beb45a7fcc17ec9bbf8dc4db5fe, cacdd67812c6df824704ac078f1770188a485ff9 ≤ v < 249cbaa1873550689fab136b74982cbba74c4169, cacdd67812c6df824704ac078f1770188a485ff9 ≤ v < 29fbc5256c2d8448f084ff179d2e5092ecd1fc54, cacdd67812c6df824704ac078f1770188a485ff9 ≤ v < 3ae8ad277e2819a281b0e36b55633c8515c16ce7, 5.18	eac18fadc791928379b179e54636494b92f8cf86, 927fe8c0eb8c10295bc0018c8faa4d91f8fe98c6, bd2e8f535ae35beb45a7fcc17ec9bbf8dc4db5fe, 249cbaa1873550689fab136b74982cbba74c4169, 29fbc5256c2d8448f084ff179d2e5092ecd1fc54, 3ae8ad277e2819a281b0e36b55633c8515c16ce7

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