CVE-2021-31440CWE-682

This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel 5.11.15

High · published May 21, 2021

CVSS v3.0
8.8
EPSS
2%
Percentile
77.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.0
8.8 · HIGH
Vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01754 · 77.7th percentile
Weakness
CWE-682 · Incorrect Calculation
Published
2021-05-21T14:30Z
EPSS history
Timeline
  • 21 MAY 14:30Z
    This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel 5.11.15
    cvelistv5