cve-2023-52447
Vulnerability from cvelistv5
Published
2024-02-22 16:21
Modified
2024-11-04 14:46
Severity ?
6.7 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Summary
bpf: Defer the free of inner map when necessary
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/37d98fb9c3144c0fddf7f6e99aece9927ac8dce6Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/62fca83303d608ad4fec3f7428c8685680bb01b0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/876673364161da50eed6b472d746ef88242b2368Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/90c445799fd1dc214d7c6279c144e33a35e29ef2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bfd9b20c4862f41d4590fde11d70a5eeae53dcc5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f91cd728b10c51f6d4a39957ccd56d1e802fc8eePatch
Impacted products
LinuxLinux
LinuxLinux
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"
      }
    ],
    "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": "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"
            }
          ]
        },
        {
          "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"
            }
          ]
        }
      ],
      "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": "2024-11-04T14:46:53.851Z",
        "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-9e1c9544281a"
      }
    }
  },
  "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": "2024-11-04T14:46:53.851Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-52447\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-02-22T17:15:08.580\",\"lastModified\":\"2024-11-04T13:16:29.427\",\"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\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\",\"baseScore\":6.7,\"baseSeverity\":\"MEDIUM\"},\"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\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\",\"baseScore\":6.7,\"baseSeverity\":\"MEDIUM\"},\"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\"]}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.