Answer in brief
CVE-2026-74613 records a High severity (CVSS 7.8) vulnerability in vsock/virtio: avoid refilling the RX queue after teardown. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=b917507e5ad983085d29069369778b16aa03a0a8 <a7658508f5fe8f1077a65e8cb9535d3426f37a2f || >=b917507e5ad983085d29069369778b16aa03a0a8 <1aa21e7c8702a7c37cd7d3cace1a652cfa5e8171 || >=b917507e5ad983085d29069369778b16aa03a0a8 <4d37e3525cc346a1421c1bdeaad5848e249fc60c || >=b917507e5ad983085d29069369778b16aa03a0a8 <9d80a04129a6c27a690cb69de3fe3f50be5aa8b9 || >=b917507e5ad983085d29069369778b16aa03a0a8 <a309b74e3fc052352ab778500449cb9c3853c363 || >=b917507e5ad983085d29069369778b16aa03a0a8 <38c7763fdc533edb34dc8f4489c260e8ba2ccae9 || >=b917507e5ad983085d29069369778b16aa03a0a8 <e82a5faea2e3886dfb2a65ce092a132e7e896915 || >=b917507e5ad983085d29069369778b16aa03a0a8 <a31e0ad444698d8aa7534a0f89fda543730f97a5 | a7658508f5fe8f1077a65e8cb9535d3426f37a2f, 1aa21e7c8702a7c37cd7d3cace1a652cfa5e8171, 4d37e3525cc346a1421c1bdeaad5848e249fc60c, 9d80a04129a6c27a690cb69de3fe3f50be5aa8b9, a309b74e3fc052352ab778500449cb9c3853c363, 38c7763fdc533edb34dc8f4489c260e8ba2ccae9, e82a5faea2e3886dfb2a65ce092a132e7e896915, a31e0ad444698d8aa7534a0f89fda543730f97a5 |
| Linux/Linuxgeneric | 5.3 | Not reported |
Published upstream
Aug 22, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 22, 2026
In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: avoid refilling the RX queue after teardown Commit b917507e5ad9 ("vsock/virtio: stop workers during the .remove()") made the RX worker jump to its common exit when rx_run is clear. That exit still refills the RX queue when the buffer count is low, so work queued across virtio_vsock_vqs_del() can add buffers after the virtqueues have been deleted. BUG: KASAN: slab-use-after-free in virtqueue_add_sgs Read of size 4 by task kworker/0:1 Workqueue: virtio_vsock virtio_transport_rx_work Call Trace: virtqueue_add_sgs (drivers/virtio/virtio_ring.c:2796) virtio_vsock_rx_fill (net/vmw_vsock/virtio_transport.c:332) virtio_transport_rx_work (net/vmw_vsock/virtio_transport.c:701) process_one_work (kernel/workqueue.c:3314) worker_thread (kernel/workqueue.c:3478) kthread (kernel/kthread.c:436) ret_from_fork (arch/x86/kernel/process.c:158) ret_from_fork_asm (arch/x86/entry/entry_64.S:245) ... Freed by task 141: kfree (mm/slub.c:6566) vp_del_vq (drivers/virtio/virtio_pci_common.c:259) vp_del_vqs (drivers/virtio/virtio_pci_common.c:285) virtio_vsock_freeze (net/vmw_vsock/virtio_transport.c:912) virtio_device_freeze (drivers/virtio/virtio.c:658) virtio_pci_freeze (drivers/virtio/virtio_pci_common.c:601) pci_pm_freeze (drivers/pci/pci-driver.c:1098) device_suspend (drivers/base/power/main.c:1968) Kernel panic - not syncing: KASAN: panic_on_warn set ... Jump to a no-refill exit when rx_run is clear, leaving the normal exit to replenish a running queue.
Quoted source text, attributed separately from HOL analysis.