CVE-2022-49611

x86/speculation: Fill RSB on vmexit for IBRS

published February 26, 2025

CVSS
—
EPSS
0%
Percentile
19.8
In the wild
Unconfirmed
What it is

In the Linux kernel, the following vulnerability has been resolved:

x86/speculation: Fill RSB on vmexit for IBRS

Prevent RSB underflow/poisoning attacks with RSB. While at it, add a

bunch of comments to attempt to document the current state of tribal

knowledge about RSB attacks and what exactly is being mitigated.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00284 · 19.8th percentile
Published
2025-02-26T02:23Z
EPSS history
Timeline
  • 26 FEB 02:23Z
    x86/speculation: Fill RSB on vmexit for IBRS
    cvelistv5