CVE-2026-90352

Resource leakage via incomplete probe-error cleanup

Published Sep 17, 2026 · Updated Sep 17, 2026

Reference leakage in Linux kernel 5.19 mt7915 probing allows attackers to leak a device reference via failed IRQ setup. In drivers/net/wireless/mediatek/mt76/mt7915/pci.c, cleanup checks dev->hif2 before its assignment and misses the reference acquired by mt7915_pci_init_hif2(). The leak requires pci_alloc_irq_vectors() or the primary devm_request_irq() to fail; attacker control of those failures and a resulting hang or crash are not documented.

CVSS severityUnavailable
Unscored
EPSS probability0.21%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reference leakage in Linux kernel 5.19 mt7915 probing allows attackers to leak a device reference via failed IRQ setup. In drivers/net/wireless/mediatek/mt76/mt7915/pci.c, cleanup checks dev->hif2 before its assignment and misses the reference acquired by mt7915_pci_init_hif2(). The leak requires pci_alloc_irq_vectors() or the primary devm_request_irq() to fail; attacker control of those failures and a resulting hang or crash are not documented.

The record

CVE
CVE-2026-90352
Published
Sep 17, 2026
Updated
Sep 17, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

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No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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