CVE-2023-2163 (GCVE-0-2023-2163)

Vulnerability from cvelistv5 – Published: 2023-09-20 05:02 – Updated: 2025-02-27 20:49
VLAI
Title
Incorrect Verifier Branch Pruning Logic Leads To Arbitrary Read/Write In Linux Kernel and Lateral Privilege Escalation
Summary
Incorrect verifier pruning in BPF in Linux Kernel >=5.4 leads to unsafe code paths being incorrectly marked as safe, resulting in arbitrary read/write in kernel memory, lateral privilege escalation, and container escape.
Severity
10 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-26 21:50 UTC
CWE
Assigner
Google CNA under the Google root
CNA scorecard C 75/100 over 33 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Kernel Unaffected: 0 , < 5.4 (custom)
Affected: 0 , < 71b547f561247897a0a14f3082730156c0533fed (git)
guessed Create a notification for this product.
Show details on NVD website
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                  "status": "unaffected",
                  "version": "0",
                  "versionType": "custom"
                },
                {
                  "lessThan": "71b547f561247897a0a14f3082730156c0533fed",
                  "status": "affected",
                  "version": "0",
                  "versionType": "git"
                }
              ]
            }
          ],
          "descriptions": [
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              "lang": "en",
              "supportingMedia": [
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                  "type": "text/html",
                  "value": "\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eIncorrect verifier pruning\u0026nbsp;\u003c/span\u003ein BPF in Linux Kernel\u0026nbsp;\u0026gt;=5.4\u0026nbsp;\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eleads to unsafe\u003c/span\u003e\u003cbr\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003ecode paths being incorrectly marked as safe, resulting in\u003c/span\u003e\u0026nbsp;arbitrary read/write in\u003cbr\u003ekernel memory, lateral privilege escalation, and container escape.\u003cbr\u003e"
                }
              ],
              "value": "Incorrect verifier pruning\u00a0in BPF in Linux Kernel\u00a0\u003e=5.4\u00a0leads to unsafe\ncode paths being incorrectly marked as safe, resulting in\u00a0arbitrary read/write in\nkernel memory, lateral privilege escalation, and container escape."
            }
          ],
          "impacts": [
            {
              "capecId": "CAPEC-233",
              "descriptions": [
                {
                  "lang": "en",
                  "value": "CAPEC-233 Privilege Escalation"
                }
              ]
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 10,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "CHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N",
                "version": "3.1"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
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          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-682",
                  "description": "CWE-682 Incorrect Calculation",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2024-05-21T03:43:35.053Z",
            "orgId": "14ed7db2-1595-443d-9d34-6215bf890778",
            "shortName": "Google"
          },
          "references": [
            {
              "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=71b547f561247897a0a14f3082730156c0533fed"
            }
          ],
          "source": {
            "discovery": "UNKNOWN"
          },
          "title": "Incorrect Verifier Branch Pruning Logic Leads To Arbitrary Read/Write In Linux Kernel and Lateral Privilege Escalation",
          "x_generator": {
            "engine": "Vulnogram 0.1.0-dev"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "14ed7db2-1595-443d-9d34-6215bf890778",
        "assignerShortName": "Google",
        "cveId": "CVE-2023-2163",
        "datePublished": "2023-09-20T05:02:38.155Z",
        "dateReserved": "2023-04-18T18:22:35.441Z",
        "dateUpdated": "2025-02-27T20:49:30.067Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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