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☎ 03 60 47 09 81 - info@securiteinfo.com
The spectre_v2_select_mitigation function in arch/x86/kernel/cpu/bugs.c in the Linux kernel before 4.18.1 does not always fill RSB upon a context switch, which makes it easier for attackers to conduct userspace-userspace spectreRSB attacks.
- https://usn.ubuntu.com/3777-1/
- https://usn.ubuntu.com/3777-2/
- https://usn.ubuntu.com/3777-3/
- https://github.com/codexlynx/hardware-attacks-state-of-the-art
- https://github.com/elivepatch/livepatch-overlay