In the Linux kernel, the following vulnerability has been resolved:
sched/membarrier: reduce the ability to hammer on sys_membarrier
On some systems, sys_membarrier can be very expensive, causing overall slowdowns for everything. So put a lock on the path in order to serialize the accesses to prevent the ability for this to be called at too high of a frequency and saturate the machine.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Linux_kernel | Linux | 4.14.0 (including) | 4.19.307 (excluding) |
| Linux_kernel | Linux | 4.20.0 (including) | 5.4.269 (excluding) |
| Linux_kernel | Linux | 5.5.0 (including) | 5.10.210 (excluding) |
| Linux_kernel | Linux | 5.11.0 (including) | 5.15.149 (excluding) |
| Linux_kernel | Linux | 5.16.0 (including) | 6.1.79 (excluding) |
| Linux_kernel | Linux | 6.2.0 (including) | 6.6.18 (excluding) |
| Linux_kernel | Linux | 6.7.0 (including) | 6.7.6 (excluding) |