CVE-2026-90354
Published Sep 17, 2026
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.
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References
Other References
https://git.kernel.org/stable/c/249cbaa1873550689fab136b74982cbba74c4169
https://git.kernel.org/stable/c/29fbc5256c2d8448f084ff179d2e5092ecd1fc54
https://git.kernel.org/stable/c/3ae8ad277e2819a281b0e36b55633c8515c16ce7
https://git.kernel.org/stable/c/927fe8c0eb8c10295bc0018c8faa4d91f8fe98c6
https://git.kernel.org/stable/c/bd2e8f535ae35beb45a7fcc17ec9bbf8dc4db5fe
https://git.kernel.org/stable/c/eac18fadc791928379b179e54636494b92f8cf86
Frequently Asked Questions
What is CVE-2026-90354? +
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.
How do I check if I'm vulnerable to CVE-2026-90354? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.