xen: privcmd: Fix possible access to a freed kirqfd instance

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CVE-2024-46762

In the Linux kernel, the following vulnerability has been resolved: xen: privcmd: Fix possible access to a freed kirqfd instance Nothing prevents simultaneous ioctl calls to privcmdirqfdassign and privcmdirqfddeassign. If that happens, it is possible that a kirqfd created and added to the...

CVE-2024-46762 xen: privcmd: Fix possible access to a freed kirqfd instance

In the Linux kernel, the following vulnerability has been resolved: xen: privcmd: Fix possible access to a freed kirqfd instance Nothing prevents simultaneous ioctl calls to privcmdirqfdassign and privcmdirqfddeassign. If that happens, it is possible that a kirqfd created and added to the...

CVE-2024-46762 xen: privcmd: Fix possible access to a freed kirqfd instance

In the Linux kernel, the following vulnerability has been resolved: xen: privcmd: Fix possible access to a freed kirqfd instance Nothing prevents simultaneous ioctl calls to privcmdirqfdassign and privcmdirqfddeassign. If that happens, it is possible that a kirqfd created and added to the...

CVE-2024-46762

CVE-2024-46762 affects the Linux kernel xen privcmd path. A race between privcmd_irqfd_assign() and privcmd_irqfd_deassign() can leave a previously freed kirqfd in use, allowing access to a freed kirqfd and causing a kernel oops. The issue is mitigated by applying SRCU locking to irqfds, mirrorin...