vsock/virtio: avoid refilling the RX queue after teardown
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 norm
CVE-2026-74613
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-74613
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "b917507e5ad983085d29069369778b16aa03a0a8",
"lessThan": "a7658508f5fe8f1077a65e8cb9535d3426f37a2f",
"versionType": "git"
},
{
"status": "affected",
"version": "b917507e5ad983085d29069369778b16aa03a0a8",
"lessThan": "1aa21e7c8702a7c37cd7d3cace1a652cfa5e8171",
"versionType": "git"
},
{
"status": "affected",
"version": "b917507e5ad983085d29069369778b16aa03a0a8",
"lessThan": "4d37e3525cc346a1421c1bdeaad5848e249fc60c",
"versionType": "git"
},
{
"status": "affected",
"version": "b917507e5ad983085d29069369778b16aa03a0a8",
"lessThan": "9d80a04129a6c27a690cb69de3fe3f50be5aa8b9",
"versionType": "git"
},
{
"status": "affected",
"version": "b917507e5ad983085d29069369778b16aa03a0a8",
"lessThan": "a309b74e3fc052352ab778500449cb9c3853c363",
"versionType": "git"
},
{
"status": "affected",
"version": "b917507e5ad983085d29069369778b16aa03a0a8",
"lessThan": "38c7763fdc533edb34dc8f4489c260e8ba2ccae9",
"versionType": "git"
},
{
"status": "affected",
"version": "b917507e5ad983085d29069369778b16aa03a0a8",
"lessThan": "e82a5faea2e3886dfb2a65ce092a132e7e896915",
"versionType": "git"
},
{
"status": "affected",
"version": "b917507e5ad983085d29069369778b16aa03a0a8",
"lessThan": "a31e0ad444698d8aa7534a0f89fda543730f97a5",
"versionType": "git"
}
],
"programFiles": [
"net/vmw_vsock/virtio_transport.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.3"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.3",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.265",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.216",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.183",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.152",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.104",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.45",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.9",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/vmw_vsock/virtio_transport.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-74613
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #33239 · Revision 1
- Added to Heist Feed
- Publisher date