VulnerabilityAnalyzed
CVE-2022-49611
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.
MEDIUM 5.5EPSS 0.28%
Does this matter?
Lower severity and a low EPSS score (0.28%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.28% probability · 21th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/17a9fc4a7b91f8599223631bb6ae6416bc0de1c0Patch
- https://git.kernel.org/stable/c/3d323b99ff5c8c57005184056d65f6af5b0479d8Patch
- https://git.kernel.org/stable/c/4d7f72b6e1bc630bec7e4cd51814bc2b092bf153Patch
- https://git.kernel.org/stable/c/8c38306e2e9257af4af2819aa287a4711ff36329Patch
- https://git.kernel.org/stable/c/8d5cff499a6d740c91ff37963907e0e983c37f0fPatch
- https://git.kernel.org/stable/c/9756bba28470722dacb79ffce554336dd1f6a6cdPatch
- https://git.kernel.org/stable/c/f744b88dfc201bf8092833ec70b23c720188b527Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.