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GoogleCVE-2023-6817

HistoryDec 18, 2023 - 3:15 p.m.

CVE-2023-6817

2023-12-1815:15:10

CWE-416

Google

web.nvd.nist.gov

cve-2023-6817

linux kernel

netfilter

nf_tables

vulnerability

local privilege escalation

use-after-free

nvd

security fix

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

7.6

Confidence

High

EPSS

Percentile

5.1%

JSON

A use-after-free vulnerability in the Linux kernel’s netfilter: nf_tables component can be exploited to achieve local privilege escalation.

The function nft_pipapo_walk did not skip inactive elements during set walk which could lead double deactivations of PIPAPO (Pile Packet Policies) elements, leading to use-after-free.

We recommend upgrading past commit 317eb9685095678f2c9f5a8189de698c5354316a.

Affected configurations

Nvd

Vulners

Node

linuxlinux_kernelRange5.6–5.10.204

linuxlinux_kernelRange5.11–5.15.143

linuxlinux_kernelRange5.16–6.1.68

linuxlinux_kernelRange6.2–6.6.7

linuxlinux_kernelMatch6.7rc1

linuxlinux_kernelMatch6.7rc2

linuxlinux_kernelMatch6.7rc3

linuxlinux_kernelMatch6.7rc4

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linuxlinux_kernel6.7cpe:2.3:o:linux:linux_kernel:6.7:rc1:*:*:*:*:*:*
linuxlinux_kernel6.7cpe:2.3:o:linux:linux_kernel:6.7:rc2:*:*:*:*:*:*
linuxlinux_kernel6.7cpe:2.3:o:linux:linux_kernel:6.7:rc3:*:*:*:*:*:*
linuxlinux_kernel6.7cpe:2.3:o:linux:linux_kernel:6.7:rc4:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	6.7	cpe:2.3:o:linux:linux_kernel:6.7:rc1::::::
linux	linux_kernel	6.7	cpe:2.3:o:linux:linux_kernel:6.7:rc2::::::
linux	linux_kernel	6.7	cpe:2.3:o:linux:linux_kernel:6.7:rc3::::::
linux	linux_kernel	6.7	cpe:2.3:o:linux:linux_kernel:6.7:rc4::::::

CNA Affected

[
  {
    "vendor": "Linux",
    "product": "Kernel",
    "packageName": "kernel",
    "repo": "https://git.kernel.org",
    "versions": [
      {
        "status": "affected",
        "version": "5.6",
        "lessThan": "6.7",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unaffected"
  }
]