发布时间: 2024年5月10日
修改时间: 2024年6月13日
In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Disable auto-enable of exclusive INTx IRQ Currently for devices requiring masking at the irqchip for INTx, ie. devices without DisINTx support, the IRQ is enabled in request_irq() and subsequently disabled as necessary to align with the masked status flag. This presents a window where the interrupt could fire between these events, resulting in the IRQ incrementing the disable depth twice. This would be unrecoverable for a user since the masked flag prevents nested enables through vfio. Instead, invert the logic using IRQF_NO_AUTOEN such that exclusive INTx is never auto-enabled, then unmask as required.
| NVD | openEuler | |
|---|---|---|
| CVSS评分 | 4.4 | |
| Attack Vector | Local | |
| Attack Complexity | Low | |
| Privileges Required | High | |
| User Interaction | None | |
| Scope | Unchanged | |
| Confidentiality | None | |
| Integrity | None | |
| Availability | High |
| 公告名 | 概要 | 发布时间 |
|---|---|---|
| KylinSec-SA-2024-1511 | kernel security update | 2024年5月10日 |
| KylinSec-SA-2024-4775 | kernel security update | 2024年5月10日 |
| 产品 | 包 | 状态 |
|---|---|---|
| KY3.4-4A | kernel | Fixed |
| KY3.4-5A | kernel | Fixed |
| KY3.5.1 | kernel | Fixed |
| KY3.5.2 | kernel | Fixed |
| V6 | kernel | Unaffected |
