pci/hotplug/pnv_php：修复 Powernv 上的热插拔驱动程序崩溃问题（CVE-2024-46761）
CVE编号
CVE-2024-46761利用情况
暂无补丁情况
N/A披露时间
2024-09-18漏洞描述
In the Linux kernel, the following vulnerability has been resolved: pci/hotplug/pnv_php: Fix hotplug driver crash on Powernv The hotplug driver for powerpc (pci/hotplug/pnv_php.c) causes a kernel crash when we try to hot-unplug/disable the PCIe switch/bridge from the PHB. The crash occurs because although the MSI data structure has been released during disable/hot-unplug path and it has been assigned with NULL, still during unregistration the code was again trying to explicitly disable the MSI which causes the NULL pointer dereference and kernel crash. The patch fixes the check during unregistration path to prevent invoking pci_disable_msi/msix() since its data structure is already freed.解决建议
建议您更新当前系统或软件至最新版，完成漏洞的修复。- 攻击路径 N/A
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- 权限要求 N/A
- 影响范围 N/A
- 用户交互 N/A
- 可用性 N/A
- 保密性 N/A
- 完整性 N/A
| CWE-ID | 漏洞类型 |
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