CVE-2022-49611

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 36/100
Published: 2025-02-26 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

Low Complexity No Interaction

CVSS Vector Breakdown

AV: Local
AC: Low
PR: Low
UI: None
S: Unchanged
C: None
I: None
A: High

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.

Affected Software (24)

VendorProductVersion
Linux Linux b9cdaaf0a3becc52e8b4662fef28c452c4f009b4 < 3d323b99ff5c8c57005184056d65f6af5b0479d8
Linux Linux 117cc7a908c83697b0b737d15ae1eb5943afe35b < f744b88dfc201bf8092833ec70b23c720188b527
Linux Linux 117cc7a908c83697b0b737d15ae1eb5943afe35b < 17a9fc4a7b91f8599223631bb6ae6416bc0de1c0
Linux Linux 117cc7a908c83697b0b737d15ae1eb5943afe35b < 4d7f72b6e1bc630bec7e4cd51814bc2b092bf153
Linux Linux 117cc7a908c83697b0b737d15ae1eb5943afe35b < 8d5cff499a6d740c91ff37963907e0e983c37f0f
Linux Linux 117cc7a908c83697b0b737d15ae1eb5943afe35b < 8c38306e2e9257af4af2819aa287a4711ff36329
Linux Linux 117cc7a908c83697b0b737d15ae1eb5943afe35b < 9756bba28470722dacb79ffce554336dd1f6a6cd
Linux Linux 68d1f7a3f1a35639a563bbad768d5df885b4ff05
Linux Linux 20e080e2752d108388d386ecc0b33d7797dfb18f
Linux Linux eebc3f8adee0a6f43a4789ef0bf5c5b35de8cfe4
Linux Linux c1ddd99a029636e234a800f28790a60d6ac0318f
Linux Linux 4.14.14 < 4.14.297
Linux Linux 3.2.101 < 3.3
Linux Linux 3.16.56 < 3.17
Linux Linux 4.4.113 < 4.5
Linux Linux 4.9.77 < 4.10
Linux Linux 4.15
linux linux_kernel < 4.14.297
linux linux_kernel 5.19
linux linux_kernel 5.19
linux linux_kernel 5.19
linux linux_kernel 5.19
linux linux_kernel 5.19
linux linux_kernel 5.19

Bug Bounty Relevance

36 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

5.5 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.28%
Raw Score 0.002840
Percentile 21.1%
Date 2026-11-05

Intelligence Sources

mitre ref →
nvd ref →