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[email protected]CVE-2020-10767

HistorySep 15, 2020 - 11:15 p.m.

CVE-2020-10767

2020-09-1523:15:12

CWE-440

[email protected]

web.nvd.nist.gov

208

In Wild

cve-2020-10767

linux kernel

vulnerability

spectre v2

ibpb

stibp

enhanced ibrs

nvd

confidentiality

CVSS2

1.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:M/Au:N/C:P/I:N/A:N

CVSS3

5.5

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

AI Score

5.8

Confidence

High

EPSS

Percentile

5.1%

JSON

A flaw was found in the Linux kernel before 5.8-rc1 in the implementation of the Enhanced IBPB (Indirect Branch Prediction Barrier). The IBPB mitigation will be disabled when STIBP is not available or when the Enhanced Indirect Branch Restricted Speculation (IBRS) is available. This flaw allows a local attacker to perform a Spectre V2 style attack when this configuration is active. The highest threat from this vulnerability is to confidentiality.

Affected configurations

Vulners

NVD

Node

linuxlinux_kernelRange≤5.8

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::

CNA Affected

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