Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 111d746bb4767ad476f80fe49067e3df3d9a9375 before bab66a9e30e39a06f3463b19f8c704386dfd5268; affected 111d746bb4767ad476f80fe49067e3df3d9a9375 before 679cfada6868723ccf162ec3b78c7402ff2405bf; affected 111d746bb4767ad476f80fe49067e3df3d9a9375 before f7a8f4cbc8cede0be55220367dc52b126e2d39e5; affected 111d746bb4767ad476f80fe49067e3df3d9a9375 before 1df3926ed8771edf286ff753428b243f334e6041; affected 111d746bb4767ad476f80fe49067e3df3d9a9375 before a45d6dd3c11e921882a2e74c7c8710b975f2eaa7; affected 111d746bb4767ad476f80fe49067e3df3d9a9375 before 4984277bc43f84d7506346a09b29af138246d54a; affected 111d746bb4767ad476f80fe49067e3df3d9a9375 before 61b101c6a150057b6d512421ed108aed16e822ea |
| Linux / Linux | affected 5.12; unaffected 0 before 5.12; unaffected 5.15.221 through 5.15.*; unaffected 6.1.188 through 6.1.*; unaffected 6.6.157 through 6.6.*; unaffected 6.12.110 through 6.12.*; unaffected 6.18.52 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/bab66a9e30e39a06f3463b19f8c704386dfd5268
- https://git.kernel.org/stable/c/679cfada6868723ccf162ec3b78c7402ff2405bf
- https://git.kernel.org/stable/c/f7a8f4cbc8cede0be55220367dc52b126e2d39e5
- https://git.kernel.org/stable/c/1df3926ed8771edf286ff753428b243f334e6041
- https://git.kernel.org/stable/c/a45d6dd3c11e921882a2e74c7c8710b975f2eaa7
- https://git.kernel.org/stable/c/4984277bc43f84d7506346a09b29af138246d54a
- https://git.kernel.org/stable/c/61b101c6a150057b6d512421ed108aed16e822ea