CVE-2026-63862
PCI: mediatek-gen3: Prevent leaking IRQ domains when IRQ not found
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Description
In the Linux kernel, the following vulnerability has been resolved: PCI: mediatek-gen3: Prevent leaking IRQ domains when IRQ not found In mtk_pcie_setup_irq(), the IRQ domains are allocated before the controller's IRQ is fetched. If the latter fails, the function directly returns an error, without cleaning up the allocated domains. Hence, reverse the order so that the IRQ domains are allocated after the controller's IRQ is found. This was flagged by Sashiko during a review of "[PATCH v6 0/7] PCI: mediatek-gen3: add power control support".
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/abd3c1927d33766aef39c4640880e3d2637429c2
- https://git.kernel.org/stable/c/07a5ecb94768cbf76fe659e9924000e9ced0c8a6
- https://git.kernel.org/stable/c/946b31b5a699a2760ee52af0055e5ebf29c5f4cb
- https://git.kernel.org/stable/c/0a2d60edc3e57c9512e239ebdfd12204d3368560
- https://git.kernel.org/stable/c/215d4273347b9010a9deae378b0df79c163f707d
References (6)
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Quick Info
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