OpenSSL CVE-2026-23229
MEDIUMCVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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3DescriptionNVD
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.
AnalysisAI
The Linux kernel's virtio-crypto driver lacks proper synchronization when handling virtqueue notifications from multiple processes, causing data corruption and system hangs when processing cryptographic operations concurrently. Local attackers with user privileges can trigger denial of service by running parallel crypto workloads, as demonstrated through multi-process OpenSSL benchmarks that expose race conditions in the virtcrypto_done_task() handler. …
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RemediationAI
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.
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