CVE-2026-74613

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> vsock/virtio: avoid refilling the RX queue after teardown<br /> <br /> Commit b917507e5ad9 ("vsock/virtio: stop workers during the .remove()")<br /> made the RX worker jump to its common exit when rx_run is clear. That<br /> exit still refills the RX queue when the buffer count is low, so work<br /> queued across virtio_vsock_vqs_del() can add buffers after the virtqueues<br /> have been deleted.<br /> <br /> BUG: KASAN: slab-use-after-free in virtqueue_add_sgs<br /> Read of size 4 by task kworker/0:1<br /> Workqueue: virtio_vsock virtio_transport_rx_work<br /> Call Trace:<br /> virtqueue_add_sgs (drivers/virtio/virtio_ring.c:2796)<br /> virtio_vsock_rx_fill (net/vmw_vsock/virtio_transport.c:332)<br /> virtio_transport_rx_work (net/vmw_vsock/virtio_transport.c:701)<br /> process_one_work (kernel/workqueue.c:3314)<br /> worker_thread (kernel/workqueue.c:3478)<br /> kthread (kernel/kthread.c:436)<br /> ret_from_fork (arch/x86/kernel/process.c:158)<br /> ret_from_fork_asm (arch/x86/entry/entry_64.S:245)<br /> ...<br /> Freed by task 141:<br /> kfree (mm/slub.c:6566)<br /> vp_del_vq (drivers/virtio/virtio_pci_common.c:259)<br /> vp_del_vqs (drivers/virtio/virtio_pci_common.c:285)<br /> virtio_vsock_freeze (net/vmw_vsock/virtio_transport.c:912)<br /> virtio_device_freeze (drivers/virtio/virtio.c:658)<br /> virtio_pci_freeze (drivers/virtio/virtio_pci_common.c:601)<br /> pci_pm_freeze (drivers/pci/pci-driver.c:1098)<br /> device_suspend (drivers/base/power/main.c:1968)<br /> Kernel panic - not syncing: KASAN: panic_on_warn set ...<br /> <br /> Jump to a no-refill exit when rx_run is clear, leaving the normal exit<br /> to replenish a running queue.