Linux Kernel: virtio-crypto virtqueue data race leads to hangs
CVE-2026-23229 Published on February 18, 2026
crypto: virtio - Add spinlock protection with virtqueue notification
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.
Products Associated with CVE-2026-23229
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Affected Versions
Linux:- Version 0eb69890e86775d178452880ea0d24384c5ccedf and below 552475d0b6cece73a52c0fa5faa0ce45e99df74b is affected.
- Version 75cba72ddb788a5b9c7ed2139fbb84383df029eb and below 8ee8ccfd60bf17cbdab91069d324b5302f4f3a30 is affected.
- Version ae4747dab2eab95a68bb2f6c7e904bff0424e1b1 and below c9e594194795c86ca753ad6ed64c2762e9309d0d is affected.
- Version c4c54fce9ec54a59a4ca035af13c2823c76684cc and below d6f0d586808689963e58fd739bed626ff5013b24 is affected.
- Version fed93fb62e05c38152b0fc1dc9609639e63eed76 and below c0a0ded3bb7fd45f720faa48449a930153257d3a is affected.
- Version fed93fb62e05c38152b0fc1dc9609639e63eed76 and below e69a7b0a71b6561b3b6459f1fded8d589f2e8ac2 is affected.
- Version fed93fb62e05c38152b0fc1dc9609639e63eed76 and below 49c57c6c108931a914ed94e3c0ddb974008260a3 is affected.
- Version fed93fb62e05c38152b0fc1dc9609639e63eed76 and below b505047ffc8057555900d2d3a005d033e6967382 is affected.
- Version 96be18c8fff9d57e29621386e2fa17268383ea27 is affected.
- Version 830a4f073f7edd2cc4f30ba95bdc3495d97c2550 is affected.
- Version 8862c0d2e47ba1733d9687fe0ff4e02d6e391255 is affected.
- Version 6.8 is affected.
- Before 6.8 is unaffected.
- Version 5.10.251, <= 5.10.* is unaffected.
- Version 5.15.201, <= 5.15.* is unaffected.
- Version 6.1.164, <= 6.1.* is unaffected.
- Version 6.6.125, <= 6.6.* is unaffected.
- Version 6.12.72, <= 6.12.* is unaffected.
- Version 6.18.11, <= 6.18.* is unaffected.
- Version 6.19.1, <= 6.19.* is unaffected.
- Version 7.0-rc1, <= * is unaffected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.