In the Linux kernel, the following vulnerability has been resolved:
vsock/virtio: read virtqueues under worker locks
Commit bd50c5dc182b ("vsock/virtio: add support for device suspend/resume") made the *_run flags transition from false to true when restore installs replacement virtqueues. The RX, TX and event workers read their virtqueue before locking and checking the corresponding flag, so a worker delayed across freeze and restore can observe the replacement queue's running state while retaining a pointer to the deleted queue.
Read each virtqueue under its mutex after checking the run flag, keeping the pointer and state in the same queue generation.
CVSS Details
- CVSS 3.1 Base Score: 8.4
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade microvm-kernel6.18Upgrade kernel6.18-toolsUpgrade kernel6.18-modules-extraUpgrade kernel6.18-modules-extra-commonUpgrade perf6.18Upgrade kernel6.18-debuginfo-common-aarch64Upgrade kernel-livepatch-6.18.48-107.148Upgrade bpftool6.18Upgrade kernel6.18Upgrade kernel6.18-debuginfo-common-x86_64Upgrade kernel6.18-headersUpgrade kernel6.18-tools-debuginfoUpgrade perf6.18-debuginfoUpgrade kernel6.18-develUpgrade python3-perf6.18-debuginfoUpgrade kernel6.18-tools-develUpgrade bpftool6.18-debuginfoUpgrade kernel6.18-debuginfoUpgrade python3-perf6.18 | Sep 30, 2026 | Aug 22, 2026 |
| Debian | — | Upgrade linuxUpgrade linux-6.12 | Aug 26, 2026 | Aug 26, 2026 |
| Redhat_linux | — | No solution exists | Aug 26, 2026 | Aug 22, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Sep 15, 2026 | Aug 22, 2026 |
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