CVE-2021-33630 NULL-ptr-deref in network sched

2024-01-1815:00:49

CWE-476

openEuler

www.cve.org

cve-2021-33630

openeuler kernel

linux

pointer manipulation

network modules

vulnerability

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

5.9 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

10.2%

JSON

NULL Pointer Dereference vulnerability in openEuler kernel on Linux (network modules) allows Pointer Manipulation. This vulnerability is associated with program files net/sched/sch_cbs.C.

This issue affects openEuler kernel: from 4.19.90 before 4.19.90-2401.3.

CNA Affected

[
  {
    "collectionURL": "https://gitee.com/src-openeuler",
    "defaultStatus": "unaffected",
    "modules": [
      "network"
    ],
    "packageName": "kernel",
    "platforms": [
      "Linux"
    ],
    "product": "kernel",
    "programFiles": [
      "https://gitee.com/openeuler/kernel/blob/openEuler-1.0-LTS/net/sched/sch_cbs.c"
    ],
    "repo": "https://gitee.com/src-openeuler/kernel",
    "vendor": "openEuler",
    "versions": [
      {
        "changes": [
          {
            "at": "b2239f607df25fc401179e6dd4b7406f942a7632 net/sched: cbs: Fix not adding cbs instance to list",
            "status": "unaffected"
          }
        ],
        "lessThan": "4.19.90-2401.3",
        "status": "affected",
        "version": "4.19.90",
        "versionType": "git"
      }
    ]
  }
]