CVE-2022-49611 - CVE House
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Status published Medium CVE-2022-49611

x86/speculation: Fill RSB on vmexit for IBRS

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

Linux
Vulnerable Versions:
b9cdaaf0a3becc52e8b4662fef28c452c4f009b4, 117cc7a908c83697b0b737d15ae1eb5943afe35b, 68d1f7a3f1a35639a563bbad768d5df885b4ff05, 20e080e2752d108388d386ecc0b33d7797dfb18f, eebc3f8adee0a6f43a4789ef0bf5c5b35de8cfe4, c1ddd99a029636e234a800f28790a60d6ac0318f, 4.14.14, 3.2.101, 3.16.56, 4.4.113, 4.9.77, 4.15, 0, 4.14.297, 4.19.266, 5.4.217, 5.10.133, 5.15.57, 5.18.14, 5.19

Timeline

Official Publish: February 26th, 2025
Last Modified: May 23rd, 2026
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.