CVE-2026-90354

wifi: mt76: mt7915: fix double hif2 init on the non-WED path

N/A
Published: September 17, 2026 at 04:09 PM UTC
Updated: October 19, 2026 at 09:19 AM UTC
1 product affected across 1 vendorLinux Kernel

Using Linux by Linux?

Get instant alerts when new vulnerabilities affect Linux - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
N/A
Exploit prediction
EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

5.18cacdd67812c6df824704ac078f1770188a485ff9
Vendor states this is fixed in 249cbaa1873550689fab136b74982cbba74c4169 (fixed)
Vendor states this is fixed in 29fbc5256c2d8448f084ff179d2e5092ecd1fc54 (fixed)
Vendor states this is fixed in 3ae8ad277e2819a281b0e36b55633c8515c16ce7 (fixed)
Vendor states this is fixed in 927fe8c0eb8c10295bc0018c8faa4d91f8fe98c6 (fixed)
Vendor states this is fixed in bd2e8f535ae35beb45a7fcc17ec9bbf8dc4db5fe (fixed)
Vendor states this is fixed in eac18fadc791928379b179e54636494b92f8cf86 (fixed)
Vendor states this is fixed in 5.18 (unaffected)
Vendor states this is fixed in 6.1.188 (unaffected)
Vendor states this is fixed in 6.12.110 (unaffected)
Vendor states this is fixed in 6.18.52 (unaffected)
Vendor states this is fixed in 6.6.157 (unaffected)
Vendor states this is fixed in 7.2.6 (unaffected)
Vendor states this is fixed in 7.3 (unaffected)
Vendor states this is fixed in 7.3-rc1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

Quick Info

StatusRECEIVED

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card