CVE-2023-52447 (GCVE-0-2023-52447)

Vulnerability from cvelistv5 – Published: 2024-02-22 16:21 – Updated: 2026-05-12 11:21
VLAI
Title
bpf: Defer the free of inner map when necessary
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf: Defer the free of inner map when necessary When updating or deleting an inner map in map array or map htab, the map may still be accessed by non-sleepable program or sleepable program. However bpf_map_fd_put_ptr() decreases the ref-counter of the inner map directly through bpf_map_put(), if the ref-counter is the last one (which is true for most cases), the inner map will be freed by ops->map_free() in a kworker. But for now, most .map_free() callbacks don't use synchronize_rcu() or its variants to wait for the elapse of a RCU grace period, so after the invocation of ops->map_free completes, the bpf program which is accessing the inner map may incur use-after-free problem. Fix the free of inner map by invoking bpf_map_free_deferred() after both one RCU grace period and one tasks trace RCU grace period if the inner map has been removed from the outer map before. The deferment is accomplished by using call_rcu() or call_rcu_tasks_trace() when releasing the last ref-counter of bpf map. The newly-added rcu_head field in bpf_map shares the same storage space with work field to reduce the size of bpf_map.
Severity
6.7 (Medium)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: bba1dc0b55ac462d24ed1228ad49800c238cd6d7 , < 90c445799fd1dc214d7c6279c144e33a35e29ef2 (git)
Affected: bba1dc0b55ac462d24ed1228ad49800c238cd6d7 , < 37d98fb9c3144c0fddf7f6e99aece9927ac8dce6 (git)
Affected: bba1dc0b55ac462d24ed1228ad49800c238cd6d7 , < 62fca83303d608ad4fec3f7428c8685680bb01b0 (git)
Affected: bba1dc0b55ac462d24ed1228ad49800c238cd6d7 , < f91cd728b10c51f6d4a39957ccd56d1e802fc8ee (git)
Affected: bba1dc0b55ac462d24ed1228ad49800c238cd6d7 , < bfd9b20c4862f41d4590fde11d70a5eeae53dcc5 (git)
Affected: bba1dc0b55ac462d24ed1228ad49800c238cd6d7 , < 876673364161da50eed6b472d746ef88242b2368 (git)
Create a notification for this product.
Linux Linux Affected: 5.9
Unaffected: 0 , < 5.9 (semver)
Unaffected: 5.10.214 , ≤ 5.10.* (semver)
Unaffected: 5.15.153 , ≤ 5.15.* (semver)
Unaffected: 6.1.75 , ≤ 6.1.* (semver)
Unaffected: 6.6.14 , ≤ 6.6.* (semver)
Unaffected: 6.7.2 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unaffected",
            "product": "linux_kernel",
            "vendor": "linux",
            "versions": [
              {
                "lessThan": "90c445799fd1",
                "status": "affected",
                "version": "bba1dc0b55ac",
                "versionType": "git"
              },
              {
                "lessThan": "37d98fb9c314",
                "status": "affected",
                "version": "bba1dc0b55ac",
                "versionType": "git"
              },
              {
                "lessThan": "62fca83303d6",
                "status": "affected",
                "version": "bba1dc0b55ac",
                "versionType": "git"
              },
              {
                "lessThan": "f91cd728b10c",
                "status": "affected",
                "version": "bba1dc0b55ac",
                "versionType": "git"
              },
              {
                "lessThan": "bfd9b20c4862",
                "status": "affected",
                "version": "bba1dc0b55ac",
                "versionType": "git"
              },
              {
                "lessThan": "876673364161",
                "status": "affected",
                "version": "bba1dc0b55ac",
                "versionType": "git"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:linux:linux_kernel:5.9:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "affected",
            "product": "linux_kernel",
            "vendor": "linux",
            "versions": [
              {
                "status": "affected",
                "version": "5.9"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "affected",
            "product": "linux_kernel",
            "vendor": "linux",
            "versions": [
              {
                "lessThan": "5.9",
                "status": "unaffected",
                "version": "0",
                "versionType": "custom"
              },
              {
                "lessThanOrEqual": "5.10.*",
                "status": "unaffected",
                "version": "5.10.214",
                "versionType": "custom"
              },
              {
                "lessThanOrEqual": "5.15.*",
                "status": "unaffected",
                "version": "5.15.153",
                "versionType": "custom"
              },
              {
                "lessThanOrEqual": "6.1.*",
                "status": "unaffected",
                "version": "6.1.75",
                "versionType": "custom"
              },
              {
                "lessThanOrEqual": "6.6.*",
                "status": "unaffected",
                "version": "6.6.14",
                "versionType": "custom"
              },
              {
                "lessThanOrEqual": "6.7.*",
                "status": "unaffected",
                "version": "6.7.2",
                "versionType": "custom"
              },
              {
                "lessThanOrEqual": "*",
                "status": "unaffected",
                "version": "6.8",
                "versionType": "custom"
              }
            ]
          }
        ],
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 6.7,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "HIGH",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2023-52447",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-15T21:02:24.907266Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-15T21:08:15.323Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T22:55:41.700Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/90c445799fd1dc214d7c6279c144e33a35e29ef2"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/37d98fb9c3144c0fddf7f6e99aece9927ac8dce6"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/62fca83303d608ad4fec3f7428c8685680bb01b0"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/f91cd728b10c51f6d4a39957ccd56d1e802fc8ee"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/bfd9b20c4862f41d4590fde11d70a5eeae53dcc5"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/876673364161da50eed6b472d746ef88242b2368"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "affected": [
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "*",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-12T11:21:39.003Z",
          "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
          "shortName": "siemens-SADP"
        },
        "references": [
          {
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
          }
        ],
        "x_adpType": "supplier"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "include/linux/bpf.h",
            "kernel/bpf/map_in_map.c",
            "kernel/bpf/syscall.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "90c445799fd1dc214d7c6279c144e33a35e29ef2",
              "status": "affected",
              "version": "bba1dc0b55ac462d24ed1228ad49800c238cd6d7",
              "versionType": "git"
            },
            {
              "lessThan": "37d98fb9c3144c0fddf7f6e99aece9927ac8dce6",
              "status": "affected",
              "version": "bba1dc0b55ac462d24ed1228ad49800c238cd6d7",
              "versionType": "git"
            },
            {
              "lessThan": "62fca83303d608ad4fec3f7428c8685680bb01b0",
              "status": "affected",
              "version": "bba1dc0b55ac462d24ed1228ad49800c238cd6d7",
              "versionType": "git"
            },
            {
              "lessThan": "f91cd728b10c51f6d4a39957ccd56d1e802fc8ee",
              "status": "affected",
              "version": "bba1dc0b55ac462d24ed1228ad49800c238cd6d7",
              "versionType": "git"
            },
            {
              "lessThan": "bfd9b20c4862f41d4590fde11d70a5eeae53dcc5",
              "status": "affected",
              "version": "bba1dc0b55ac462d24ed1228ad49800c238cd6d7",
              "versionType": "git"
            },
            {
              "lessThan": "876673364161da50eed6b472d746ef88242b2368",
              "status": "affected",
              "version": "bba1dc0b55ac462d24ed1228ad49800c238cd6d7",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "include/linux/bpf.h",
            "kernel/bpf/map_in_map.c",
            "kernel/bpf/syscall.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.9"
            },
            {
              "lessThan": "5.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.214",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.153",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.7.*",
              "status": "unaffected",
              "version": "6.7.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.8",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.214",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.153",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.75",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.14",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.7.2",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.8",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Defer the free of inner map when necessary\n\nWhen updating or deleting an inner map in map array or map htab, the map\nmay still be accessed by non-sleepable program or sleepable program.\nHowever bpf_map_fd_put_ptr() decreases the ref-counter of the inner map\ndirectly through bpf_map_put(), if the ref-counter is the last one\n(which is true for most cases), the inner map will be freed by\nops-\u003emap_free() in a kworker. But for now, most .map_free() callbacks\ndon\u0027t use synchronize_rcu() or its variants to wait for the elapse of a\nRCU grace period, so after the invocation of ops-\u003emap_free completes,\nthe bpf program which is accessing the inner map may incur\nuse-after-free problem.\n\nFix the free of inner map by invoking bpf_map_free_deferred() after both\none RCU grace period and one tasks trace RCU grace period if the inner\nmap has been removed from the outer map before. The deferment is\naccomplished by using call_rcu() or call_rcu_tasks_trace() when\nreleasing the last ref-counter of bpf map. The newly-added rcu_head\nfield in bpf_map shares the same storage space with work field to\nreduce the size of bpf_map."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:27:30.626Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/90c445799fd1dc214d7c6279c144e33a35e29ef2"
        },
        {
          "url": "https://git.kernel.org/stable/c/37d98fb9c3144c0fddf7f6e99aece9927ac8dce6"
        },
        {
          "url": "https://git.kernel.org/stable/c/62fca83303d608ad4fec3f7428c8685680bb01b0"
        },
        {
          "url": "https://git.kernel.org/stable/c/f91cd728b10c51f6d4a39957ccd56d1e802fc8ee"
        },
        {
          "url": "https://git.kernel.org/stable/c/bfd9b20c4862f41d4590fde11d70a5eeae53dcc5"
        },
        {
          "url": "https://git.kernel.org/stable/c/876673364161da50eed6b472d746ef88242b2368"
        }
      ],
      "title": "bpf: Defer the free of inner map when necessary",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-52447",
    "datePublished": "2024-02-22T16:21:39.032Z",
    "dateReserved": "2024-02-20T12:30:33.292Z",
    "dateUpdated": "2026-05-12T11:21:39.003Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2023-52447",
      "date": "2026-05-29",
      "epss": "0.00011",
      "percentile": "0.01576"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-52447\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-02-22T17:15:08.580\",\"lastModified\":\"2026-05-12T12:16:15.580\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbpf: Defer the free of inner map when necessary\\n\\nWhen updating or deleting an inner map in map array or map htab, the map\\nmay still be accessed by non-sleepable program or sleepable program.\\nHowever bpf_map_fd_put_ptr() decreases the ref-counter of the inner map\\ndirectly through bpf_map_put(), if the ref-counter is the last one\\n(which is true for most cases), the inner map will be freed by\\nops-\u003emap_free() in a kworker. But for now, most .map_free() callbacks\\ndon\u0027t use synchronize_rcu() or its variants to wait for the elapse of a\\nRCU grace period, so after the invocation of ops-\u003emap_free completes,\\nthe bpf program which is accessing the inner map may incur\\nuse-after-free problem.\\n\\nFix the free of inner map by invoking bpf_map_free_deferred() after both\\none RCU grace period and one tasks trace RCU grace period if the inner\\nmap has been removed from the outer map before. The deferment is\\naccomplished by using call_rcu() or call_rcu_tasks_trace() when\\nreleasing the last ref-counter of bpf map. The newly-added rcu_head\\nfield in bpf_map shares the same storage space with work field to\\nreduce the size of bpf_map.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf: posponer la liberaci\u00f3n del mapa interno cuando sea necesario Al actualizar o eliminar un mapa interno en la matriz de mapas o en el htab de mapas, a\u00fan se puede acceder al mapa mediante un programa que no se puede dormir o un programa que se puede dormir. . Sin embargo, bpf_map_fd_put_ptr() disminuye el contador de referencias del mapa interno directamente a trav\u00e9s de bpf_map_put(), si el contador de referencias es el \u00faltimo (lo cual es cierto en la mayor\u00eda de los casos), el mapa interno ser\u00e1 liberado por ops-\u0026gt;map_free() en un kworker. Pero por ahora, la mayor\u00eda de las devoluciones de llamada .map_free() no usan sincronizar_rcu() o sus variantes para esperar a que transcurra el per\u00edodo de gracia de RCU, por lo que despu\u00e9s de que se completa la invocaci\u00f3n de ops-\u0026gt;map_free, el programa bpf que accede al interior El mapa puede sufrir un problema de uso despu\u00e9s de su liberaci\u00f3n. Corrija la liberaci\u00f3n del mapa interno invocando bpf_map_free_deferred() despu\u00e9s de un per\u00edodo de gracia de RCU y un per\u00edodo de gracia de seguimiento de tareas de RCU si el mapa interno se elimin\u00f3 del mapa externo antes. El aplazamiento se logra utilizando call_rcu() o call_rcu_tasks_trace() al liberar el \u00faltimo contador de referencia del mapa bpf. El campo rcu_head reci\u00e9n agregado en bpf_map comparte el mismo espacio de almacenamiento con el campo de trabajo para reducir el tama\u00f1o de bpf_map.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":6.7,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":0.8,\"impactScore\":5.9},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":6.7,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":0.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.9.0\",\"versionEndExcluding\":\"5.10.214\",\"matchCriteriaId\":\"A5880D00-FD69-4D01-84E4-36FCC5B578C4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.153\",\"matchCriteriaId\":\"ACB69438-845D-4E3C-B114-3140611F9C0B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.75\",\"matchCriteriaId\":\"070D0ED3-90D0-4F95-B1FF-57D7F46F332D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.14\",\"matchCriteriaId\":\"5C6B50A6-3D8B-4CE2-BDCC-A098609CBA14\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.7.2\",\"matchCriteriaId\":\"7229C448-E0C9-488B-8939-36BA5254065E\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/37d98fb9c3144c0fddf7f6e99aece9927ac8dce6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/62fca83303d608ad4fec3f7428c8685680bb01b0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/876673364161da50eed6b472d746ef88242b2368\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/90c445799fd1dc214d7c6279c144e33a35e29ef2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/bfd9b20c4862f41d4590fde11d70a5eeae53dcc5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f91cd728b10c51f6d4a39957ccd56d1e802fc8ee\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/37d98fb9c3144c0fddf7f6e99aece9927ac8dce6\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/62fca83303d608ad4fec3f7428c8685680bb01b0\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/876673364161da50eed6b472d746ef88242b2368\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/90c445799fd1dc214d7c6279c144e33a35e29ef2\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/bfd9b20c4862f41d4590fde11d70a5eeae53dcc5\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f91cd728b10c51f6d4a39957ccd56d1e802fc8ee\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-265688.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/90c445799fd1dc214d7c6279c144e33a35e29ef2\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/37d98fb9c3144c0fddf7f6e99aece9927ac8dce6\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/62fca83303d608ad4fec3f7428c8685680bb01b0\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/f91cd728b10c51f6d4a39957ccd56d1e802fc8ee\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/bfd9b20c4862f41d4590fde11d70a5eeae53dcc5\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/876673364161da50eed6b472d746ef88242b2368\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T22:55:41.700Z\"}}, {\"affected\": [{\"vendor\": \"Siemens\", \"product\": \"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"*\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}], \"x_adpType\": \"supplier\", \"references\": [{\"url\": \"https://cert-portal.siemens.com/productcert/html/ssa-265688.html\"}], \"providerMetadata\": {\"orgId\": \"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\", \"shortName\": \"siemens-SADP\", \"dateUpdated\": \"2026-05-12T11:21:39.003Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 6.7, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"HIGH\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-52447\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-15T21:02:24.907266Z\"}}}], \"affected\": [{\"cpes\": [\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\"], \"vendor\": \"linux\", \"product\": \"linux_kernel\", \"versions\": [{\"status\": \"affected\", \"version\": \"bba1dc0b55ac\", \"lessThan\": \"90c445799fd1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bba1dc0b55ac\", \"lessThan\": \"37d98fb9c314\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bba1dc0b55ac\", \"lessThan\": \"62fca83303d6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bba1dc0b55ac\", \"lessThan\": \"f91cd728b10c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bba1dc0b55ac\", \"lessThan\": \"bfd9b20c4862\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bba1dc0b55ac\", \"lessThan\": \"876673364161\", \"versionType\": \"git\"}], \"defaultStatus\": \"unaffected\"}, {\"cpes\": [\"cpe:2.3:o:linux:linux_kernel:5.9:*:*:*:*:*:*:*\"], \"vendor\": \"linux\", \"product\": \"linux_kernel\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.9\"}], \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\"], \"vendor\": \"linux\", \"product\": \"linux_kernel\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.9\", \"versionType\": \"custom\"}, {\"status\": \"unaffected\", \"version\": \"5.10.214\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.153\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.75\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.14\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.2\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"*\"}], \"defaultStatus\": \"affected\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-07-05T15:20:37.612Z\"}}], \"cna\": {\"title\": \"bpf: Defer the free of inner map when necessary\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"bba1dc0b55ac462d24ed1228ad49800c238cd6d7\", \"lessThan\": \"90c445799fd1dc214d7c6279c144e33a35e29ef2\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bba1dc0b55ac462d24ed1228ad49800c238cd6d7\", \"lessThan\": \"37d98fb9c3144c0fddf7f6e99aece9927ac8dce6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bba1dc0b55ac462d24ed1228ad49800c238cd6d7\", \"lessThan\": \"62fca83303d608ad4fec3f7428c8685680bb01b0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bba1dc0b55ac462d24ed1228ad49800c238cd6d7\", \"lessThan\": \"f91cd728b10c51f6d4a39957ccd56d1e802fc8ee\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bba1dc0b55ac462d24ed1228ad49800c238cd6d7\", \"lessThan\": \"bfd9b20c4862f41d4590fde11d70a5eeae53dcc5\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bba1dc0b55ac462d24ed1228ad49800c238cd6d7\", \"lessThan\": \"876673364161da50eed6b472d746ef88242b2368\", \"versionType\": \"git\"}], \"programFiles\": [\"include/linux/bpf.h\", \"kernel/bpf/map_in_map.c\", \"kernel/bpf/syscall.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.9\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.9\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.214\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.153\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.75\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.14\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.2\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"include/linux/bpf.h\", \"kernel/bpf/map_in_map.c\", \"kernel/bpf/syscall.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/90c445799fd1dc214d7c6279c144e33a35e29ef2\"}, {\"url\": \"https://git.kernel.org/stable/c/37d98fb9c3144c0fddf7f6e99aece9927ac8dce6\"}, {\"url\": \"https://git.kernel.org/stable/c/62fca83303d608ad4fec3f7428c8685680bb01b0\"}, {\"url\": \"https://git.kernel.org/stable/c/f91cd728b10c51f6d4a39957ccd56d1e802fc8ee\"}, {\"url\": \"https://git.kernel.org/stable/c/bfd9b20c4862f41d4590fde11d70a5eeae53dcc5\"}, {\"url\": \"https://git.kernel.org/stable/c/876673364161da50eed6b472d746ef88242b2368\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbpf: Defer the free of inner map when necessary\\n\\nWhen updating or deleting an inner map in map array or map htab, the map\\nmay still be accessed by non-sleepable program or sleepable program.\\nHowever bpf_map_fd_put_ptr() decreases the ref-counter of the inner map\\ndirectly through bpf_map_put(), if the ref-counter is the last one\\n(which is true for most cases), the inner map will be freed by\\nops-\u003emap_free() in a kworker. But for now, most .map_free() callbacks\\ndon\u0027t use synchronize_rcu() or its variants to wait for the elapse of a\\nRCU grace period, so after the invocation of ops-\u003emap_free completes,\\nthe bpf program which is accessing the inner map may incur\\nuse-after-free problem.\\n\\nFix the free of inner map by invoking bpf_map_free_deferred() after both\\none RCU grace period and one tasks trace RCU grace period if the inner\\nmap has been removed from the outer map before. The deferment is\\naccomplished by using call_rcu() or call_rcu_tasks_trace() when\\nreleasing the last ref-counter of bpf map. The newly-added rcu_head\\nfield in bpf_map shares the same storage space with work field to\\nreduce the size of bpf_map.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.214\", \"versionStartIncluding\": \"5.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.153\", \"versionStartIncluding\": \"5.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.75\", \"versionStartIncluding\": \"5.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.14\", \"versionStartIncluding\": \"5.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.2\", \"versionStartIncluding\": \"5.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8\", \"versionStartIncluding\": \"5.9\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T19:27:30.626Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-52447\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-12T11:21:39.003Z\", \"dateReserved\": \"2024-02-20T12:30:33.292Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-02-22T16:21:39.032Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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.