CVE-2026-93052

misc: bcm-vk: Use acquire/release for msgq_inited

State: Published
Severity: Not scored
Published: Sep 17, 2026
Updated: Oct 19, 2026
Reserved: Sep 17, 2026

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	111d746bb4767ad476f80fe49067e3df3d9a9375 to before bab66a9e30e39a06f3463b19f8c704386dfd5268Affected 111d746bb4767ad476f80fe49067e3df3d9a9375 to before 679cfada6868723ccf162ec3b78c7402ff2405bfAffected 111d746bb4767ad476f80fe49067e3df3d9a9375 to before f7a8f4cbc8cede0be55220367dc52b126e2d39e5Affected 111d746bb4767ad476f80fe49067e3df3d9a9375 to before 1df3926ed8771edf286ff753428b243f334e6041Affected 111d746bb4767ad476f80fe49067e3df3d9a9375 to before a45d6dd3c11e921882a2e74c7c8710b975f2eaa7Affected 111d746bb4767ad476f80fe49067e3df3d9a9375 to before 4984277bc43f84d7506346a09b29af138246d54aAffected 111d746bb4767ad476f80fe49067e3df3d9a9375 to before 61b101c6a150057b6d512421ed108aed16e822eaAffected
LinuxLinux	5.12Affected before 5.12Not affected 5.15.221 through 5.15.Not affected 6.1.188 through 6.1.Not affected 6.6.157 through 6.6.Not affected 6.12.110 through 6.12.Not affected 6.18.52 through 6.18.Not affected 7.2.6 through 7.2.Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

111d746bb4767ad476f80fe49067e3df3d9a9375 to before bab66a9e30e39a06f3463b19f8c704386dfd5268Affected
111d746bb4767ad476f80fe49067e3df3d9a9375 to before 679cfada6868723ccf162ec3b78c7402ff2405bfAffected
111d746bb4767ad476f80fe49067e3df3d9a9375 to before f7a8f4cbc8cede0be55220367dc52b126e2d39e5Affected
111d746bb4767ad476f80fe49067e3df3d9a9375 to before 1df3926ed8771edf286ff753428b243f334e6041Affected
111d746bb4767ad476f80fe49067e3df3d9a9375 to before a45d6dd3c11e921882a2e74c7c8710b975f2eaa7Affected
111d746bb4767ad476f80fe49067e3df3d9a9375 to before 4984277bc43f84d7506346a09b29af138246d54aAffected
111d746bb4767ad476f80fe49067e3df3d9a9375 to before 61b101c6a150057b6d512421ed108aed16e822eaAffected

LinuxLinux

5.12Affected
before 5.12Not affected
5.15.221 through 5.15.*Not affected
6.1.188 through 6.1.*Not affected
6.6.157 through 6.6.*Not affected
6.12.110 through 6.12.*Not affected
6.18.52 through 6.18.*Not affected
7.2.6 through 7.2.*Not affected
7.3 and laterNot affected

References

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