CVE-2022-49611

x86/speculation: Fill RSB on vmexit for IBRS

Severity Score

7.1

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

MITRE
TN

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.

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.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2025-02-26 CVE Reserved
2025-02-26 CVE Published
2025-02-26 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (7)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/3d323b99ff5c8c57005184056d65f6af5b0479d8	2022-11-01
https://git.kernel.org/stable/c/f744b88dfc201bf8092833ec70b23c720188b527	2022-11-23
https://git.kernel.org/stable/c/17a9fc4a7b91f8599223631bb6ae6416bc0de1c0	2022-10-07
https://git.kernel.org/stable/c/4d7f72b6e1bc630bec7e4cd51814bc2b092bf153	2022-07-25
https://git.kernel.org/stable/c/8d5cff499a6d740c91ff37963907e0e983c37f0f	2022-07-23
https://git.kernel.org/stable/c/8c38306e2e9257af4af2819aa287a4711ff36329	2022-07-23
https://git.kernel.org/stable/c/9756bba28470722dacb79ffce554336dd1f6a6cd	2022-06-27

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.14.297 Search vendor "Linux" for product "Linux Kernel" and version " < 4.14.297"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.19.266 Search vendor "Linux" for product "Linux Kernel" and version " < 4.19.266"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.4.217 Search vendor "Linux" for product "Linux Kernel" and version " < 5.4.217"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.10.133 Search vendor "Linux" for product "Linux Kernel" and version " < 5.10.133"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.15.57 Search vendor "Linux" for product "Linux Kernel" and version " < 5.15.57"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.18.14 Search vendor "Linux" for product "Linux Kernel" and version " < 5.18.14"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.19 Search vendor "Linux" for product "Linux Kernel" and version " < 5.19"		en		Affected