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 describes a Linux kernel issue in the Xen driver support (privcmd) where simultaneous calls to privcmd_irqfd_assign() and privcmd_irqfd_deassign() could lead to use-after-free of a kirqfd instance, potentially causing a kernel oops. The root cause is a lack of proper synchronizatio...