CVE-2021-31440

2021-05-2114:30:14

CWE-682

zdi

www.cve.org

CVSS3

8.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

AI Score

7.7

Confidence

High

EPSS

0.001

Percentile

17.1%

JSON

This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel 5.11.15. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of eBPF programs. The issue results from the lack of proper validation of user-supplied eBPF programs prior to executing them. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the kernel. Was ZDI-CAN-13661.

CNA Affected

[
  {
    "product": "Kernel",
    "vendor": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.11.15"
      }
    ]
  }
]