CVE-2022-2977

2022-09-1421:15:10

CWE-416

redhat

web.nvd.nist.gov

cve-2022-2977

linux kernel

virtualized tpm

use-after-free

privilege escalation

nvd

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.2

Confidence

High

EPSS

Percentile

5.1%

JSON

A flaw was found in the Linux kernel implementation of proxied virtualized TPM devices. On a system where virtualized TPM devices are configured (this is not the default) a local attacker can create a use-after-free and create a situation where it may be possible to escalate privileges on the system.

Affected configurations

Nvd

Vulners

Node

linuxlinux_kernelRange4.12–4.14.276

linuxlinux_kernelRange4.15–4.19.238

linuxlinux_kernelRange4.20–5.4.189

linuxlinux_kernelRange5.5–5.10.110

linuxlinux_kernelRange5.11–5.15.33

linuxlinux_kernelRange5.16–5.16.19

linuxlinux_kernelRange5.17–5.17.1

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

[
  {
    "vendor": "n/a",
    "product": "Linux kernel",
    "versions": [
      {
        "version": "Linux kernel versions prior to 5.18",
        "status": "affected"
      }
    ]
  }
]