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CVE-2026-74614

Unknown

Last modified

CVE-2026-74614 is a vulnerability of currently unknown severity. 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..

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.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 762c251c7f5c4ee5bef71460c6e822ed293fd69f, < 941329ce14c5f481223a10d1d4c8b57ea7f3048a; >= bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c, < 29dd10583bf9d2744cd84b862e4257c0a5699570; >= bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c, < a1fb0c5b8a7c2753758aeced40971f99449dde0c; >= bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c, < eae099c764c7ebdb842eb1f638913e310bdd6513; >= bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c, < bd43a7ec668be428265b3209eb43647aedcf720a; >= bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c, < 1cecb4202afdbeddcf29d59baf596ac6ab753f7f; >= bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c, < ebac8f6b1ef0e9278afe204b8692a7479988dace; >= 5.15.138, < 5.15.216
LinuxLinux5.19

References

Timeline

Published
Last Modified
Status
Received

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.
How severe is CVE-2026-74614?
Severity scoring for CVE-2026-74614 is pending analysis.
How do I fix CVE-2026-74614?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST