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PoC in GitHub
2023
CVE-2023-0045 (2023-04-25)
The current implementation of the prctl syscall does not issue an IBPB immediately during the syscall The ib_prctl_set function updates the Thread Information Flags (TIFs) for the task and updates the SPEC_CTRL MSR on the function __speculation_ctrl_update, but the IBPB is only issued on the next schedule, when the TIF bi
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