CVE-2021-34866CWE-843

CVE-2021-34866

High · published January 25, 2022

CVSS v3.1
7.8
EPSS
1%
Percentile
61.6
In the wild
Unconfirmed
What it is

This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel 5.14-rc3. 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, which can result in a type confusion condition. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the kernel. Was ZDI-CAN-14689.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00972 · 61.6th percentile
Weakness
CWE-843 · Access of Resource Using Incompatible Type ('Type Confusion')
Published
2022-01-25T21:15Z
Affected products (10)
ProductVersionsFixed in
linux/linux_kernel≥ 5.8, < 5.10.625.10.62
linux/linux_kernel≥ 5.11, < 5.13.145.13.14
netapp/h410c_firmwareall versions—
netapp/h300s_firmwareall versions—
netapp/h500s_firmwareall versions—
netapp/h700s_firmwareall versions—
netapp/h300e_firmwareall versions—
netapp/h500e_firmwareall versions—
netapp/h700e_firmwareall versions—
netapp/h410s_firmwareall versions—
References (4)
EPSS history
Timeline
  • 25 JAN 15:30Z
    This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel 5.14-rc3
    cvelistv5