CVE-2024-44957 - Xen Privcmd Spinlock Race Condition

CVE ID : CVE-2024-44957
Published : Sept. 4, 2024, 7:15 p.m. | 24 minutes ago
Description : In the Linux kernel, the following vulnerability has been resolved: xen: privcmd: Switch from mutex to spinlock for irqfds irqfd_wakeup() gets EPOLLHUP, when it is called by eventfd_release() by way of wake_up_poll(&ctx->wqh, EPOLLHUP), which gets called under spin_lock_irqsave(). We can't use a mutex here as it will lead to a deadlock. Fix it by switching over to a spin lock.
Severity: 0.0 | NA
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