Linux Kernel up to 7.2.5 mt7915 mt7915_pci_init_hif2 denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k0.00+

Summaryinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.1.187/6.6.156/6.12.109/6.18.51/7.2.5. This vulnerability affects the function mt7915_pci_init_hif2 of the component mt7915. The manipulation results in denial of service. This vulnerability is identified as CVE-2026-90354. The attack can be executed remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 6.1.187/6.6.156/6.12.109/6.18.51/7.2.5. Affected is the function mt7915_pci_init_hif2 of the component mt7915. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at git.kernel.org. This vulnerability is traded as CVE-2026-90354 since 09/11/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/17/2026). This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6 or 7.3-rc1 eliminates this vulnerability. Applying the patch eac18fadc791928379b179e54636494b92f8cf86/927fe8c0eb8c10295bc0018c8faa4d91f8fe98c6/bd2e8f535ae35beb45a7fcc17ec9bbf8dc4db5fe/249cbaa1873550689fab136b74982cbba74c4169/29fbc5256c2d8448f084ff179d2e5092ecd1fc54/3ae8ad277e2819a281b0e36b55633c8515c16ce7 is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.1.188/6.6.157/6.12.110/6.18.52/7.2.6/7.3-rc1
Patch: eac18fadc791928379b179e54636494b92f8cf86/927fe8c0eb8c10295bc0018c8faa4d91f8fe98c6/bd2e8f535ae35beb45a7fcc17ec9bbf8dc4db5fe/249cbaa1873550689fab136b74982cbba74c4169/29fbc5256c2d8448f084ff179d2e5092ecd1fc54/3ae8ad277e2819a281b0e36b55633c8515c16ce7

Timelineinfo

09/11/2026 CVE reserved
09/17/2026 +6 days Advisory disclosed
09/17/2026 +0 days VulDB entry created
09/17/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-90354 (🔒)
GCVE (CVE): GCVE-0-2026-90354
GCVE (VulDB): GCVE-100-406926

Entryinfo

Created: 09/17/2026 22:03
Changes: 09/17/2026 22:03 (59)
Complete: 🔍
Cache ID: 216::103

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