CVE-2020-36694

Published May 21, 2023

Last updated a year ago

CVSS medium 6.7

Overview

Description: An issue was discovered in netfilter in the Linux kernel before 5.10. There can be a use-after-free in the packet processing context, because the per-CPU sequence count is mishandled during concurrent iptables rules replacement. This could be exploited with the CAP_NET_ADMIN capability in an unprivileged namespace. NOTE: cc00bca was reverted in 5.12.
Source: cve@mitre.org
NVD status: Modified

Risk scores

CVSS 3.1

Type: Primary
Base score: 6.7
Impact score: 5.9
Exploitability score: 0.8
Vector string: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Severity: MEDIUM

Weaknesses

nvd@nist.gov: CWE-416

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "D61CA62B-157A-4415-B8FD-7C3C1208315D",
            "versionEndExcluding": "5.10"
          }
        ],
        "operator": "OR"
      }
    ]
  }
]

References