Answer in brief
CVE-2026-74613 records a Unknown severity 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.
A CVSS score is not reported in the current record. 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 22, 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.