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CVE-2026-90352— wifi: mt76: mt7915: release hif2 reference on probe IRQ failure

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: mt7915: 在 probe 阶段 IRQ 失败时释放 hif2 引用 获取的 hif2 引用，原本仅在与 相关的错误处理路径中释放；但 直到 IRQ 配置完成后才会被赋值。因此，如果 或主要的 调用失败，该引用就会发生泄漏。修复方式是在这些错误路径中显式调用 来释放该引用。

AI Predicted 4.7 Difficulty: Moderate

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux f68d67623dec9445960b52a0e9e8e60297596b4b< 8a2e38019846da29a112fac4dd96fe5bfa298faf affected
f68d67623dec9445960b52a0e9e8e60297596b4b< 2a434d2637b9c9be9bcc8a84dc46880cc1446643 affected
f68d67623dec9445960b52a0e9e8e60297596b4b< 5c30a6350a300fbb800831f1b4373b2f59e03410 affected
f68d67623dec9445960b52a0e9e8e60297596b4b< ed5cc46a3c8f4fe7f549c661914d8d835169acc0 affected
f68d67623dec9445960b52a0e9e8e60297596b4b< fb9c7b4c238b4e5469a11a1fb8cf332f6193b995 affected
f68d67623dec9445960b52a0e9e8e60297596b4b< 8370aebd26a9dfa2e0de665e3ab504c0e97ee730 affected
5.19 affected
< 5.19 unaffected
… +6 more rows
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I. Basic Information for CVE-2026-90352

Vulnerability Information
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Vulnerability Title
wifi: mt76: mt7915: release hif2 reference on probe IRQ failure
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7915: release hif2 reference on probe IRQ failure The hif2 reference obtained by mt7915_pci_init_hif2() is only released on error paths that key off dev->hif2, which is not assigned until after the IRQ setup. If pci_alloc_irq_vectors() or the primary devm_request_irq() fails, the reference leaks. Drop it explicitly on those paths via mt7915_put_hif2().
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 f68d67623dec9445960b52a0e9e8e60297596b4b ~ 8a2e38019846da29a112fac4dd96fe5bfa298faf -
Linux Linux 5.19 -

II. Public POCs for CVE-2026-90352

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III. Intelligence Information for CVE-2026-90352

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Patches & Fixes for CVE-2026-90352 (6)

Same Patch Batch · Linux · 2026-09-17 · 602 CVEs total

CVE-2026-90255 Bluetooth: hci_conn: fix the SCO setup context lifetime
CVE-2026-90238 media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path
CVE-2026-90240 iommu/vt-d: Flush context cache with correct SID when tearing down aliases
CVE-2026-90239 media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem()
CVE-2026-90241 iommu/vt-d: Tear down scalable-mode context on probe failure
CVE-2026-90243 iommu/vt-d: Clear Present bit before tearing down copied context entry
CVE-2026-90242 iommu/vt-d: Fix iopf_refcount leak on RID domain replacement
CVE-2026-90244 iommu/dma: Restore locking around msi_page_list
CVE-2026-90245 fbdev: kyro: Validate overlay viewport coordinates
CVE-2026-90246 apparmor: fix integer overflow in verify_tags() bounds check
CVE-2026-90247 bpf: Fix mmap_lock leak in irq_work path
CVE-2026-90248 net/sched: cls_api: fix teardown of an adopted proto on insert-race loss
CVE-2026-90249 iio: light: gp2ap002: Fix unbalanced runtime PM on repeated event writes
CVE-2026-90250 bpf, cgroup: Fix storage null-ptr-deref after replacing prog
CVE-2026-90251 Bluetooth: MSFT: validate evt_prefix_len against the response length
CVE-2026-90253 Bluetooth: MGMT: free the mesh send cancel command when it is cancelled
CVE-2026-90252 Bluetooth: MGMT: free the HCI command when it is cancelled
CVE-2026-90254 Bluetooth: hci_sync: free the advertising instance on the failure and cancel paths
CVE-2026-90256 Bluetooth: L2CAP: use proto_lock for l2cap_data to fix l2cap_disconn_ind
CVE-2026-90268 scsi: sd: Fix error handling in sd_probe() after large pool creation failure

Showing top 20 of 602 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-90352

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