Linux · Linux Kernel · CVE-2018-15572
**Name of the Vulnerable Software and Affected Versions**
Linux kernel versions prior to 4.18.1
**Description**
The issue is related to the `spectre v2 select mitigation` function in the Linux kernel, which does not always fill RSB upon a context switch. This makes it easier for attackers to conduct userspace-userspace spectreRSB attacks, potentially allowing them to access confidential data.
**Recommendations**
For Linux kernel versions prior to 4.18.1, update to version 4.18.1 or later to resolve the issue.