GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2020-8428 (GCVE-0-2020-8428)

Vulnerability from cvelistv5 – Published: 2020-01-28 23:43 – Updated: 2024-08-04 09:56
VLAI
Summary
fs/namei.c in the Linux kernel before 5.5 has a may_create_in_sticky use-after-free, which allows local users to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory, aka CID-d0cb50185ae9. One attack vector may be an open system call for a UNIX domain socket, if the socket is being moved to a new parent directory and its old parent directory is being removed.
Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE
  • n/a
Assigner
References
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T09:56:28.354Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.openwall.com/lists/oss-security/2020/01/28/2"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/torvalds/linux/commit/d0cb50185ae942b03c4327be322055d622dc79f6"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d0cb50185ae942b03c4327be322055d622dc79f6"
          },
          {
            "name": "[oss-security] 20200129 Re: Linux kernel: user-triggerable read-after-free crash or 1-bit infoleak oracle in open(2)",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2020/01/28/4"
          },
          {
            "name": "[oss-security] 20200202 Re: Linux kernel: user-triggerable read-after-free crash or 1-bit infoleak oracle in open(2)",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2020/02/02/1"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20200313-0003/"
          },
          {
            "name": "openSUSE-SU-2020:0336",
            "tags": [
              "vendor-advisory",
              "x_refsource_SUSE",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html"
          },
          {
            "name": "USN-4320-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/4320-1/"
          },
          {
            "name": "USN-4318-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/4318-1/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html"
          },
          {
            "name": "USN-4324-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/4324-1/"
          },
          {
            "name": "USN-4325-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/4325-1/"
          },
          {
            "name": "USN-4319-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/4319-1/"
          },
          {
            "name": "DSA-4667",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2020/dsa-4667"
          },
          {
            "name": "[debian-lts-announce] 20200610 [SECURITY] [DLA 2242-1] linux-4.9 security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html"
          },
          {
            "name": "DSA-4698",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2020/dsa-4698"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "fs/namei.c in the Linux kernel before 5.5 has a may_create_in_sticky use-after-free, which allows local users to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory, aka CID-d0cb50185ae9. One attack vector may be an open system call for a UNIX domain socket, if the socket is being moved to a new parent directory and its old parent directory is being removed."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-06-10T19:06:15.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.openwall.com/lists/oss-security/2020/01/28/2"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/torvalds/linux/commit/d0cb50185ae942b03c4327be322055d622dc79f6"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d0cb50185ae942b03c4327be322055d622dc79f6"
        },
        {
          "name": "[oss-security] 20200129 Re: Linux kernel: user-triggerable read-after-free crash or 1-bit infoleak oracle in open(2)",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2020/01/28/4"
        },
        {
          "name": "[oss-security] 20200202 Re: Linux kernel: user-triggerable read-after-free crash or 1-bit infoleak oracle in open(2)",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2020/02/02/1"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20200313-0003/"
        },
        {
          "name": "openSUSE-SU-2020:0336",
          "tags": [
            "vendor-advisory",
            "x_refsource_SUSE"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html"
        },
        {
          "name": "USN-4320-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/4320-1/"
        },
        {
          "name": "USN-4318-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/4318-1/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html"
        },
        {
          "name": "USN-4324-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/4324-1/"
        },
        {
          "name": "USN-4325-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/4325-1/"
        },
        {
          "name": "USN-4319-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/4319-1/"
        },
        {
          "name": "DSA-4667",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "https://www.debian.org/security/2020/dsa-4667"
        },
        {
          "name": "[debian-lts-announce] 20200610 [SECURITY] [DLA 2242-1] linux-4.9 security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html"
        },
        {
          "name": "DSA-4698",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "https://www.debian.org/security/2020/dsa-4698"
        }
      ],
      "source": {
        "discovery": "INTERNAL"
      },
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2020-8428",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "fs/namei.c in the Linux kernel before 5.5 has a may_create_in_sticky use-after-free, which allows local users to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory, aka CID-d0cb50185ae9. One attack vector may be an open system call for a UNIX domain socket, if the socket is being moved to a new parent directory and its old parent directory is being removed."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.openwall.com/lists/oss-security/2020/01/28/2",
              "refsource": "MISC",
              "url": "https://www.openwall.com/lists/oss-security/2020/01/28/2"
            },
            {
              "name": "https://github.com/torvalds/linux/commit/d0cb50185ae942b03c4327be322055d622dc79f6",
              "refsource": "MISC",
              "url": "https://github.com/torvalds/linux/commit/d0cb50185ae942b03c4327be322055d622dc79f6"
            },
            {
              "name": "https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d0cb50185ae942b03c4327be322055d622dc79f6",
              "refsource": "MISC",
              "url": "https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d0cb50185ae942b03c4327be322055d622dc79f6"
            },
            {
              "name": "[oss-security] 20200129 Re: Linux kernel: user-triggerable read-after-free crash or 1-bit infoleak oracle in open(2)",
              "refsource": "MLIST",
              "url": "http://www.openwall.com/lists/oss-security/2020/01/28/4"
            },
            {
              "name": "[oss-security] 20200202 Re: Linux kernel: user-triggerable read-after-free crash or 1-bit infoleak oracle in open(2)",
              "refsource": "MLIST",
              "url": "http://www.openwall.com/lists/oss-security/2020/02/02/1"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20200313-0003/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20200313-0003/"
            },
            {
              "name": "openSUSE-SU-2020:0336",
              "refsource": "SUSE",
              "url": "http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html"
            },
            {
              "name": "USN-4320-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/4320-1/"
            },
            {
              "name": "USN-4318-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/4318-1/"
            },
            {
              "name": "http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html",
              "refsource": "MISC",
              "url": "http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html"
            },
            {
              "name": "USN-4324-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/4324-1/"
            },
            {
              "name": "USN-4325-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/4325-1/"
            },
            {
              "name": "USN-4319-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/4319-1/"
            },
            {
              "name": "DSA-4667",
              "refsource": "DEBIAN",
              "url": "https://www.debian.org/security/2020/dsa-4667"
            },
            {
              "name": "[debian-lts-announce] 20200610 [SECURITY] [DLA 2242-1] linux-4.9 security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html"
            },
            {
              "name": "DSA-4698",
              "refsource": "DEBIAN",
              "url": "https://www.debian.org/security/2020/dsa-4698"
            }
          ]
        },
        "source": {
          "discovery": "INTERNAL"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2020-8428",
    "datePublished": "2020-01-28T23:43:41.000Z",
    "dateReserved": "2020-01-28T00:00:00.000Z",
    "dateUpdated": "2024-08-04T09:56:28.354Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2020-8428",
      "date": "2026-09-17",
      "epss": "0.00655",
      "percentile": "0.49743"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.19\", \"versionEndExcluding\": \"5.5\", \"matchCriteriaId\": \"904A2E19-D6CD-4C97-B8F4-1F179CC6956C\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"fs/namei.c in the Linux kernel before 5.5 has a may_create_in_sticky use-after-free, which allows local users to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory, aka CID-d0cb50185ae9. One attack vector may be an open system call for a UNIX domain socket, if the socket is being moved to a new parent directory and its old parent directory is being removed.\"}, {\"lang\": \"es\", \"value\": \"El archivo fs/namei.c en el kernel de Linux versiones anteriores a 5.5, presenta una vulnerabilidad de uso de la memoria previamente liberada en la funci\\u00f3n may_create_in_sticky, que permite a usuarios locales causar una denegaci\\u00f3n de servicio (OOPS) u obtener informaci\\u00f3n confidencial de la memoria del kernel, tambi\\u00e9n se conoce como CID-d0cb50185ae9. Un vector de ataque puede ser una llamada de sistema abierta para un socket del dominio UNIX, si el socket est\\u00e1 siendo movido hacia un nuevo directorio padre y su antiguo directorio padre est\\u00e1 siendo eliminado.\"}]",
      "id": "CVE-2020-8428",
      "lastModified": "2024-11-21T05:38:50.103",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H\", \"baseScore\": 7.1, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.2}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:L/AC:L/Au:N/C:P/I:N/A:P\", \"baseScore\": 3.6, \"accessVector\": \"LOCAL\", \"accessComplexity\": \"LOW\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"PARTIAL\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"PARTIAL\"}, \"baseSeverity\": \"LOW\", \"exploitabilityScore\": 3.9, \"impactScore\": 4.9, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}",
      "published": "2020-01-29T00:15:10.953",
      "references": "[{\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html\", \"source\": \"cve@mitre.org\"}, {\"url\": \"http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html\", \"source\": \"cve@mitre.org\"}, {\"url\": \"http://www.openwall.com/lists/oss-security/2020/01/28/4\", \"source\": \"cve@mitre.org\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"http://www.openwall.com/lists/oss-security/2020/02/02/1\", \"source\": \"cve@mitre.org\"}, {\"url\": \"https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d0cb50185ae942b03c4327be322055d622dc79f6\", \"source\": \"cve@mitre.org\", \"tags\": [\"Mailing List\", \"Patch\", \"Vendor Advisory\"]}, {\"url\": \"https://github.com/torvalds/linux/commit/d0cb50185ae942b03c4327be322055d622dc79f6\", \"source\": \"cve@mitre.org\", \"tags\": [\"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html\", \"source\": \"cve@mitre.org\"}, {\"url\": \"https://security.netapp.com/advisory/ntap-20200313-0003/\", \"source\": \"cve@mitre.org\"}, {\"url\": \"https://usn.ubuntu.com/4318-1/\", \"source\": \"cve@mitre.org\"}, {\"url\": \"https://usn.ubuntu.com/4319-1/\", \"source\": \"cve@mitre.org\"}, {\"url\": \"https://usn.ubuntu.com/4320-1/\", \"source\": \"cve@mitre.org\"}, {\"url\": \"https://usn.ubuntu.com/4324-1/\", \"source\": \"cve@mitre.org\"}, {\"url\": \"https://usn.ubuntu.com/4325-1/\", \"source\": \"cve@mitre.org\"}, {\"url\": \"https://www.debian.org/security/2020/dsa-4667\", \"source\": \"cve@mitre.org\"}, {\"url\": \"https://www.debian.org/security/2020/dsa-4698\", \"source\": \"cve@mitre.org\"}, {\"url\": \"https://www.openwall.com/lists/oss-security/2020/01/28/2\", \"source\": \"cve@mitre.org\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"http://www.openwall.com/lists/oss-security/2020/01/28/4\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"http://www.openwall.com/lists/oss-security/2020/02/02/1\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d0cb50185ae942b03c4327be322055d622dc79f6\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Patch\", \"Vendor Advisory\"]}, {\"url\": \"https://github.com/torvalds/linux/commit/d0cb50185ae942b03c4327be322055d622dc79f6\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://security.netapp.com/advisory/ntap-20200313-0003/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://usn.ubuntu.com/4318-1/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://usn.ubuntu.com/4319-1/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://usn.ubuntu.com/4320-1/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://usn.ubuntu.com/4324-1/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://usn.ubuntu.com/4325-1/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://www.debian.org/security/2020/dsa-4667\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://www.debian.org/security/2020/dsa-4698\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://www.openwall.com/lists/oss-security/2020/01/28/2\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}]",
      "sourceIdentifier": "cve@mitre.org",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-416\"}]}]"
    },
    "microsoft_vex": {
      "current_release_date": "2020-09-25T00:00:00.000Z",
      "cve": "CVE-2020-8428",
      "id": "msrc_CVE-2020-8428",
      "initial_release_date": "2020-01-02T00:00:00.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "fs/namei.c in the Linux kernel before 5.5 has a may_create_in_sticky use-after-free which allows local users to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory aka CID-d0cb50185ae9. One attack vector may be an open system call for a UNIX domain socket if the socket is being moved to a new parent directory and its old parent directory is being removed.",
      "url": "https://msrc.microsoft.com/csaf/vex/2020/msrc_cve-2020-8428.json",
      "version": "1"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2020-8428\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2020-01-29T00:15:10.953\",\"lastModified\":\"2024-11-21T05:38:50.103\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"fs/namei.c in the Linux kernel before 5.5 has a may_create_in_sticky use-after-free, which allows local users to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory, aka CID-d0cb50185ae9. One attack vector may be an open system call for a UNIX domain socket, if the socket is being moved to a new parent directory and its old parent directory is being removed.\"},{\"lang\":\"es\",\"value\":\"El archivo fs/namei.c en el kernel de Linux versiones anteriores a 5.5, presenta una vulnerabilidad de uso de la memoria previamente liberada en la funci\u00f3n may_create_in_sticky, que permite a usuarios locales causar una denegaci\u00f3n de servicio (OOPS) u obtener informaci\u00f3n confidencial de la memoria del kernel, tambi\u00e9n se conoce como CID-d0cb50185ae9. Un vector de ataque puede ser una llamada de sistema abierta para un socket del dominio UNIX, si el socket est\u00e1 siendo movido hacia un nuevo directorio padre y su antiguo directorio padre est\u00e1 siendo eliminado.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H\",\"baseScore\":7.1,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.2}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:L/AC:L/Au:N/C:P/I:N/A:P\",\"baseScore\":3.6,\"accessVector\":\"LOCAL\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"LOW\",\"exploitabilityScore\":3.9,\"impactScore\":4.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.19\",\"versionEndExcluding\":\"5.5\",\"matchCriteriaId\":\"904A2E19-D6CD-4C97-B8F4-1F179CC6956C\"}]}]}],\"references\":[{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2020/01/28/4\",\"source\":\"cve@mitre.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"http://www.openwall.com/lists/oss-security/2020/02/02/1\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d0cb50185ae942b03c4327be322055d622dc79f6\",\"source\":\"cve@mitre.org\",\"tags\":[\"Mailing List\",\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://github.com/torvalds/linux/commit/d0cb50185ae942b03c4327be322055d622dc79f6\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20200313-0003/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://usn.ubuntu.com/4318-1/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://usn.ubuntu.com/4319-1/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://usn.ubuntu.com/4320-1/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://usn.ubuntu.com/4324-1/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://usn.ubuntu.com/4325-1/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://www.debian.org/security/2020/dsa-4667\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://www.debian.org/security/2020/dsa-4698\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://www.openwall.com/lists/oss-security/2020/01/28/2\",\"source\":\"cve@mitre.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2020/01/28/4\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"http://www.openwall.com/lists/oss-security/2020/02/02/1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d0cb50185ae942b03c4327be322055d622dc79f6\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://github.com/torvalds/linux/commit/d0cb50185ae942b03c4327be322055d622dc79f6\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20200313-0003/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://usn.ubuntu.com/4318-1/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://usn.ubuntu.com/4319-1/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://usn.ubuntu.com/4320-1/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://usn.ubuntu.com/4324-1/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://usn.ubuntu.com/4325-1/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.debian.org/security/2020/dsa-4667\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.debian.org/security/2020/dsa-4698\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.openwall.com/lists/oss-security/2020/01/28/2\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T07:40:39+00:00",
      "cve": "CVE-2020-8428",
      "id": "CVE-2020-8428",
      "initial_release_date": "2020-01-28T00:00:00+00:00",
      "product_status:known_not_affected": "104",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: use-after-free in fs/namei.c",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-8428.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-31T02:27:44Z",
      "cve": "CVE-2020-8428",
      "id": "CVE-2020-8428",
      "initial_release_date": "2023-02-15T04:01:18Z",
      "product_status:known_affected": "390",
      "product_status:known_not_affected": "243",
      "product_status:recommended": "1253",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2020-8428",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2020-8428.json",
      "version": "39"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.