CVE-2026-93052

Description

In the Linux kernel, the following vulnerability has been resolved: misc: bcm-vk: Use acquire/release for msgq_inited bcm_vk_sync_msgq() fills the message queue information and then sets msgq_inited. Readers call bcm_vk_drv_access_ok() before accessing the message queues and their cached queue information. atomic_set()/atomic_read() do not order those accesses. A reader can see msgq_inited set while still seeing stale queue information. Use release when publishing the initialized queues and acquire when checking the gate. Keep the clear in bcm_vk_blk_drv_access() as atomic_set(). It closes the gate and does not publish queue state to readers.

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EPSS — Exploit Prediction

0.0021

Probability of exploitation

0.10%

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/1df3926ed8771edf286ff753428b243f334e6041 https://git.kernel.org/stable/c/4984277bc43f84d7506346a09b29af138246d54a https://git.kernel.org/stable/c/61b101c6a150057b6d512421ed108aed16e822ea https://git.kernel.org/stable/c/679cfada6868723ccf162ec3b78c7402ff2405bf https://git.kernel.org/stable/c/a45d6dd3c11e921882a2e74c7c8710b975f2eaa7 https://git.kernel.org/stable/c/bab66a9e30e39a06f3463b19f8c704386dfd5268 https://git.kernel.org/stable/c/f7a8f4cbc8cede0be55220367dc52b126e2d39e5

Frequently Asked Questions

What is CVE-2026-93052? +

In the Linux kernel, the following vulnerability has been resolved: misc: bcm-vk: Use acquire/release for msgq_inited bcm_vk_sync_msgq() fills the message queue information and then sets msgq_inited. Readers call bcm_vk_drv_access_ok() before accessing the message queues and their cached queue information. atomic_set()/atomic_read() do not order those accesses. A reader can see msgq_inited set while still seeing stale queue information. Use release when publishing the initialized queues and acquire when checking the gate. Keep the clear in bcm_vk_blk_drv_access() as atomic_set(). It closes the gate and does not publish queue state to readers.

How do I check if I'm vulnerable to CVE-2026-93052? +

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.