CVE-2020-10766

2020-09-1522:10:27

CWE-440

redhat

www.cve.org

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

6.1 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

JSON

A logic bug flaw was found in Linux kernel before 5.8-rc1 in the implementation of SSBD. A bug in the logic handling allows an attacker with a local account to disable SSBD protection during a context switch when additional speculative execution mitigations are in place. This issue was introduced when the per task/process conditional STIPB switching was added on top of the existing SSBD switching. The highest threat from this vulnerability is to confidentiality.

CNA Affected

[
  {
    "product": "kernel",
    "vendor": "Linux Kernel",
    "versions": [
      {
        "status": "affected",
        "version": "before 5.8-rc1"
      }
    ]
  }
]