CVE-2026-74614 (CVSS 8.4)

Description

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.

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CVSS v3.1 Score

8.4

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0014

Probability of exploitation

0.04%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/1cecb4202afdbeddcf29d59baf596ac6ab753f7f https://git.kernel.org/stable/c/29dd10583bf9d2744cd84b862e4257c0a5699570 https://git.kernel.org/stable/c/941329ce14c5f481223a10d1d4c8b57ea7f3048a https://git.kernel.org/stable/c/a1fb0c5b8a7c2753758aeced40971f99449dde0c https://git.kernel.org/stable/c/bd43a7ec668be428265b3209eb43647aedcf720a https://git.kernel.org/stable/c/eae099c764c7ebdb842eb1f638913e310bdd6513 https://git.kernel.org/stable/c/ebac8f6b1ef0e9278afe204b8692a7479988dace

Frequently Asked Questions

What is CVE-2026-74614? +

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. It has a CVSS v3.1 base score of 8.4 (HIGH).

How severe is CVE-2026-74614? +

CVE-2026-74614 has a CVSS v3.1 score of 8.4 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0014, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-74614? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

CVE-2026-74614