In the Linux kernel, the following vulnerability has been resolved: crypto: virtio - Add spinlock protection with virtqueue notification When VM boots with one virtio-crypto PCI device and builtin backend, run openssl benchmark command with multiple processes, such as openssl speed -evp aes-128-cbc -engine afalg -seconds 10 -multi 32 openssl processes will hangup and there is error reported like this: virtio_crypto virtio0: dataq.0:id 3 is not a head! It seems that the data virtqueue need protection when it is handled for virtio done notification. If the spinlock protection is added in virtcrypto_done_task(), openssl benchmark with multiple processes works well.
| Vendor | Product | Versions |
|---|---|---|
| linux | linux_kernel | < 4.20, < 5.5, < 5.10.251, < 5.15.201, < 6.1.164, < 6.6.125, < 6.12.72, < 6.18.11, < 6.19.1 |
