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

CVE-2023-52656 (GCVE-0-2023-52656)

Vulnerability from cvelistv5 – Published: 2024-05-13 13:12 – Updated: 2026-08-05 09:10
VLAI
Title
io_uring: drop any code related to SCM_RIGHTS
Summary
In the Linux kernel, the following vulnerability has been resolved: io_uring: drop any code related to SCM_RIGHTS This is dead code after we dropped support for passing io_uring fds over SCM_RIGHTS, get rid of it.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 15:43 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 2b188cc1bb857a9d4701ae59aa7768b5124e262e , < cfb24022bb2c31f1f555dc6bc3cc5e2547446fb3 (git)
Affected: 2b188cc1bb857a9d4701ae59aa7768b5124e262e , < a6771f343af90a25f3a14911634562bb5621df02 (git)
Affected: 2b188cc1bb857a9d4701ae59aa7768b5124e262e , < d909d381c3152393421403be4b6435f17a2378b4 (git)
Affected: 2b188cc1bb857a9d4701ae59aa7768b5124e262e , < a3812a47a32022ca76bf46ddacdd823dc2aabf8b (git)
Affected: 2b188cc1bb857a9d4701ae59aa7768b5124e262e , < 6fc19b3d8a45ff0e5d50ec8184cee1d5eac1a8ba (git)
Affected: 2b188cc1bb857a9d4701ae59aa7768b5124e262e , < 88c49d9c896143cdc0f77197c4dcf24140375e89 (git)
Affected: 2b188cc1bb857a9d4701ae59aa7768b5124e262e , < 6e5e6d274956305f1fc0340522b38f5f5be74bdb (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.1
Unaffected: 0 , < 5.1 (semver)
Unaffected: 5.4.273 , ≤ 5.4.* (semver)
Unaffected: 5.10.214 , ≤ 5.10.* (semver)
Unaffected: 5.15.153 , ≤ 5.15.* (semver)
Unaffected: 6.1.83 , ≤ 6.1.* (semver)
Unaffected: 6.6.23 , ≤ 6.6.* (semver)
Unaffected: 6.7.11 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T23:03:21.313Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/cfb24022bb2c31f1f555dc6bc3cc5e2547446fb3"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/a6771f343af90a25f3a14911634562bb5621df02"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/d909d381c3152393421403be4b6435f17a2378b4"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/a3812a47a32022ca76bf46ddacdd823dc2aabf8b"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/88c49d9c896143cdc0f77197c4dcf24140375e89"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/6e5e6d274956305f1fc0340522b38f5f5be74bdb"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-52656",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T15:43:19.379716Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-11T17:33:26.050Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "include/linux/io_uring_types.h",
            "io_uring/filetable.c",
            "io_uring/io_uring.c",
            "io_uring/rsrc.c",
            "io_uring/rsrc.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "cfb24022bb2c31f1f555dc6bc3cc5e2547446fb3",
              "status": "affected",
              "version": "2b188cc1bb857a9d4701ae59aa7768b5124e262e",
              "versionType": "git"
            },
            {
              "lessThan": "a6771f343af90a25f3a14911634562bb5621df02",
              "status": "affected",
              "version": "2b188cc1bb857a9d4701ae59aa7768b5124e262e",
              "versionType": "git"
            },
            {
              "lessThan": "d909d381c3152393421403be4b6435f17a2378b4",
              "status": "affected",
              "version": "2b188cc1bb857a9d4701ae59aa7768b5124e262e",
              "versionType": "git"
            },
            {
              "lessThan": "a3812a47a32022ca76bf46ddacdd823dc2aabf8b",
              "status": "affected",
              "version": "2b188cc1bb857a9d4701ae59aa7768b5124e262e",
              "versionType": "git"
            },
            {
              "lessThan": "6fc19b3d8a45ff0e5d50ec8184cee1d5eac1a8ba",
              "status": "affected",
              "version": "2b188cc1bb857a9d4701ae59aa7768b5124e262e",
              "versionType": "git"
            },
            {
              "lessThan": "88c49d9c896143cdc0f77197c4dcf24140375e89",
              "status": "affected",
              "version": "2b188cc1bb857a9d4701ae59aa7768b5124e262e",
              "versionType": "git"
            },
            {
              "lessThan": "6e5e6d274956305f1fc0340522b38f5f5be74bdb",
              "status": "affected",
              "version": "2b188cc1bb857a9d4701ae59aa7768b5124e262e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "include/linux/io_uring_types.h",
            "io_uring/filetable.c",
            "io_uring/io_uring.c",
            "io_uring/rsrc.c",
            "io_uring/rsrc.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.1"
            },
            {
              "lessThan": "5.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.273",
              "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": "6.1.83",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.23",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.7.*",
              "status": "unaffected",
              "version": "6.7.11",
              "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": "5.4.273",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.214",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.153",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.83",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.23",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.7.11",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.8",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring: drop any code related to SCM_RIGHTS\n\nThis is dead code after we dropped support for passing io_uring fds\nover SCM_RIGHTS, get rid of it."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerable SCM accounting path is reached via local io_uring syscalls (io_uring_setup and io_uring_register with IORING_REGISTER_FILES), not via network packet processing.\nAC:L - An unprivileged attacker fully controls both sides of the unix GC / unix_stream_read_generic race by creating the ring, registering unix sockets as fixed files, and driving concurrent SCM/socket operations, so success does not depend on external conditions.\nPR:L - io_uring is available to unprivileged local users by default (sysctl io_uring_disabled=0); registering files and creating AF_UNIX sockets requires only a normal user account.\nUI:N - Exploitation requires no victim action; the attacker triggers the bug entirely through their own syscalls.\nS:U - Impact remains within the local kernel\u0027s security authority (standard local privilege escalation), with no VM/IOMMU/sandbox boundary crossed.\nC:H - The bug is a use-after-free in the io_uring/AF_UNIX SCM_RIGHTS GC interaction; UAF of socket/file objects enables arbitrary kernel memory read primitives.\nI:H - The same UAF is exploitable for heap reuse and arbitrary write / control-flow hijacking, matching the severity already assigned to sibling CVE-2023-52654 for this vulnerability class.\nA:H - Triggering the UAF/race reliably causes kernel oops, panic, or hang even when not fully exploited for code execution."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T09:10:53.267Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/cfb24022bb2c31f1f555dc6bc3cc5e2547446fb3"
        },
        {
          "url": "https://git.kernel.org/stable/c/a6771f343af90a25f3a14911634562bb5621df02"
        },
        {
          "url": "https://git.kernel.org/stable/c/d909d381c3152393421403be4b6435f17a2378b4"
        },
        {
          "url": "https://git.kernel.org/stable/c/a3812a47a32022ca76bf46ddacdd823dc2aabf8b"
        },
        {
          "url": "https://git.kernel.org/stable/c/6fc19b3d8a45ff0e5d50ec8184cee1d5eac1a8ba"
        },
        {
          "url": "https://git.kernel.org/stable/c/88c49d9c896143cdc0f77197c4dcf24140375e89"
        },
        {
          "url": "https://git.kernel.org/stable/c/6e5e6d274956305f1fc0340522b38f5f5be74bdb"
        }
      ],
      "title": "io_uring: drop any code related to SCM_RIGHTS",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-52656",
    "datePublished": "2024-05-13T13:12:35.333Z",
    "dateReserved": "2024-03-06T09:52:12.099Z",
    "dateUpdated": "2026-08-05T09:10:53.267Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2023-52656",
      "date": "2026-09-16",
      "epss": "0.00308",
      "percentile": "0.23591"
    },
    "fkie_nvd": {
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nio_uring: drop any code related to SCM_RIGHTS\\n\\nThis is dead code after we dropped support for passing io_uring fds\\nover SCM_RIGHTS, get rid of it.\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: io_uring: elimina cualquier c\\u00f3digo relacionado con SCM_RIGHTS. Este es un c\\u00f3digo inactivo despu\\u00e9s de que dejamos de admitir el paso de io_uring fds sobre SCM_RIGHTS, deshazte de \\u00e9l.\"}]",
      "id": "CVE-2023-52656",
      "lastModified": "2024-11-21T08:40:17.940",
      "published": "2024-05-14T14:23:13.810",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/6e5e6d274956305f1fc0340522b38f5f5be74bdb\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/88c49d9c896143cdc0f77197c4dcf24140375e89\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/a3812a47a32022ca76bf46ddacdd823dc2aabf8b\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/a6771f343af90a25f3a14911634562bb5621df02\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/cfb24022bb2c31f1f555dc6bc3cc5e2547446fb3\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/d909d381c3152393421403be4b6435f17a2378b4\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/6e5e6d274956305f1fc0340522b38f5f5be74bdb\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/88c49d9c896143cdc0f77197c4dcf24140375e89\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/a3812a47a32022ca76bf46ddacdd823dc2aabf8b\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/a6771f343af90a25f3a14911634562bb5621df02\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/cfb24022bb2c31f1f555dc6bc3cc5e2547446fb3\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/d909d381c3152393421403be4b6435f17a2378b4\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Awaiting Analysis"
    },
    "microsoft_vex": {
      "current_release_date": "2026-02-18T01:40:07.000Z",
      "cve": "CVE-2023-52656",
      "id": "msrc_CVE-2023-52656",
      "initial_release_date": "2024-05-02T07:00:00.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "io_uring: drop any code related to SCM_RIGHTS",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2023-52656.json",
      "version": "2"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-52656\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-14T14:23:13.810\",\"lastModified\":\"2026-08-04T10:18:36.607\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nio_uring: drop any code related to SCM_RIGHTS\\n\\nThis is dead code after we dropped support for passing io_uring fds\\nover SCM_RIGHTS, get rid of it.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: io_uring: elimina cualquier c\u00f3digo relacionado con SCM_RIGHTS. Este es un c\u00f3digo inactivo despu\u00e9s de que dejamos de admitir el paso de io_uring fds sobre SCM_RIGHTS, deshazte de \u00e9l.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"include/linux/io_uring_types.h\",\"io_uring/filetable.c\",\"io_uring/io_uring.c\",\"io_uring/rsrc.c\",\"io_uring/rsrc.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2b188cc1bb857a9d4701ae59aa7768b5124e262e\",\"lessThan\":\"cfb24022bb2c31f1f555dc6bc3cc5e2547446fb3\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2b188cc1bb857a9d4701ae59aa7768b5124e262e\",\"lessThan\":\"a6771f343af90a25f3a14911634562bb5621df02\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2b188cc1bb857a9d4701ae59aa7768b5124e262e\",\"lessThan\":\"d909d381c3152393421403be4b6435f17a2378b4\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2b188cc1bb857a9d4701ae59aa7768b5124e262e\",\"lessThan\":\"a3812a47a32022ca76bf46ddacdd823dc2aabf8b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2b188cc1bb857a9d4701ae59aa7768b5124e262e\",\"lessThan\":\"6fc19b3d8a45ff0e5d50ec8184cee1d5eac1a8ba\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2b188cc1bb857a9d4701ae59aa7768b5124e262e\",\"lessThan\":\"88c49d9c896143cdc0f77197c4dcf24140375e89\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2b188cc1bb857a9d4701ae59aa7768b5124e262e\",\"lessThan\":\"6e5e6d274956305f1fc0340522b38f5f5be74bdb\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"include/linux/io_uring_types.h\",\"io_uring/filetable.c\",\"io_uring/io_uring.c\",\"io_uring/rsrc.c\",\"io_uring/rsrc.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.1\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.1\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.273\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.214\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.153\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.83\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.23\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.7.11\",\"lessThanOrEqual\":\"6.7.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.8\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9},{\"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:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-09-10T15:43:19.379716Z\",\"id\":\"CVE-2023-52656\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.1\",\"versionEndExcluding\":\"5.4.273\",\"matchCriteriaId\":\"BDE41967-4FDC-4FCF-B49A-14790AA86C64\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.214\",\"matchCriteriaId\":\"65987874-467B-4D3B-91D6-68A129B34FB8\"},{\"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\":\"6.1.83\",\"matchCriteriaId\":\"121A07F6-F505-4C47-86BF-9BB6CC7B6C19\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.23\",\"matchCriteriaId\":\"E00814DC-0BA7-431A-9926-80FEB4A96C68\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.7.11\",\"matchCriteriaId\":\"9B95D3A6-E162-47D5-ABFC-F3FA74FA7CFD\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/6e5e6d274956305f1fc0340522b38f5f5be74bdb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6fc19b3d8a45ff0e5d50ec8184cee1d5eac1a8ba\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/88c49d9c896143cdc0f77197c4dcf24140375e89\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a3812a47a32022ca76bf46ddacdd823dc2aabf8b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a6771f343af90a25f3a14911634562bb5621df02\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/cfb24022bb2c31f1f555dc6bc3cc5e2547446fb3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d909d381c3152393421403be4b6435f17a2378b4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6e5e6d274956305f1fc0340522b38f5f5be74bdb\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/88c49d9c896143cdc0f77197c4dcf24140375e89\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a3812a47a32022ca76bf46ddacdd823dc2aabf8b\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a6771f343af90a25f3a14911634562bb5621df02\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/cfb24022bb2c31f1f555dc6bc3cc5e2547446fb3\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d909d381c3152393421403be4b6435f17a2378b4\",\"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\",\"tags\":[\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T19:25:22+00:00",
      "cve": "CVE-2023-52656",
      "id": "CVE-2023-52656",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:fixed": "280",
      "product_status:known_affected": "22",
      "product_status:known_not_affected": "98",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: io_uring: drop any code related to SCM_RIGHTS",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-52656.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-09-03T16:50:28Z",
      "cve": "CVE-2023-52656",
      "id": "CVE-2023-52656",
      "initial_release_date": "2024-05-14T03:34:51Z",
      "product_status:known_affected": "337",
      "product_status:known_not_affected": "304",
      "product_status:recommended": "666",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-52656",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-52656.json",
      "version": "98"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/cfb24022bb2c31f1f555dc6bc3cc5e2547446fb3\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/a6771f343af90a25f3a14911634562bb5621df02\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/d909d381c3152393421403be4b6435f17a2378b4\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/a3812a47a32022ca76bf46ddacdd823dc2aabf8b\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/88c49d9c896143cdc0f77197c4dcf24140375e89\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/6e5e6d274956305f1fc0340522b38f5f5be74bdb\", \"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\": \"2024-08-02T23:03:21.313Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-52656\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T15:43:19.379716Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:16.663Z\"}}], \"cna\": {\"title\": \"io_uring: drop any code related to SCM_RIGHTS\", \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"AV:L - The vulnerable SCM accounting path is reached via local io_uring syscalls (io_uring_setup and io_uring_register with IORING_REGISTER_FILES), not via network packet processing.\\nAC:L - An unprivileged attacker fully controls both sides of the unix GC / unix_stream_read_generic race by creating the ring, registering unix sockets as fixed files, and driving concurrent SCM/socket operations, so success does not depend on external conditions.\\nPR:L - io_uring is available to unprivileged local users by default (sysctl io_uring_disabled=0); registering files and creating AF_UNIX sockets requires only a normal user account.\\nUI:N - Exploitation requires no victim action; the attacker triggers the bug entirely through their own syscalls.\\nS:U - Impact remains within the local kernel\u0027s security authority (standard local privilege escalation), with no VM/IOMMU/sandbox boundary crossed.\\nC:H - The bug is a use-after-free in the io_uring/AF_UNIX SCM_RIGHTS GC interaction; UAF of socket/file objects enables arbitrary kernel memory read primitives.\\nI:H - The same UAF is exploitable for heap reuse and arbitrary write / control-flow hijacking, matching the severity already assigned to sibling CVE-2023-52654 for this vulnerability class.\\nA:H - Triggering the UAF/race reliably causes kernel oops, panic, or hang even when not fully exploited for code execution.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"2b188cc1bb857a9d4701ae59aa7768b5124e262e\", \"lessThan\": \"cfb24022bb2c31f1f555dc6bc3cc5e2547446fb3\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2b188cc1bb857a9d4701ae59aa7768b5124e262e\", \"lessThan\": \"a6771f343af90a25f3a14911634562bb5621df02\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2b188cc1bb857a9d4701ae59aa7768b5124e262e\", \"lessThan\": \"d909d381c3152393421403be4b6435f17a2378b4\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2b188cc1bb857a9d4701ae59aa7768b5124e262e\", \"lessThan\": \"a3812a47a32022ca76bf46ddacdd823dc2aabf8b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2b188cc1bb857a9d4701ae59aa7768b5124e262e\", \"lessThan\": \"6fc19b3d8a45ff0e5d50ec8184cee1d5eac1a8ba\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2b188cc1bb857a9d4701ae59aa7768b5124e262e\", \"lessThan\": \"88c49d9c896143cdc0f77197c4dcf24140375e89\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2b188cc1bb857a9d4701ae59aa7768b5124e262e\", \"lessThan\": \"6e5e6d274956305f1fc0340522b38f5f5be74bdb\", \"versionType\": \"git\"}], \"programFiles\": [\"include/linux/io_uring_types.h\", \"io_uring/filetable.c\", \"io_uring/io_uring.c\", \"io_uring/rsrc.c\", \"io_uring/rsrc.h\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.1\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.1\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.273\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"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\": \"6.1.83\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.23\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.11\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"include/linux/io_uring_types.h\", \"io_uring/filetable.c\", \"io_uring/io_uring.c\", \"io_uring/rsrc.c\", \"io_uring/rsrc.h\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/cfb24022bb2c31f1f555dc6bc3cc5e2547446fb3\"}, {\"url\": \"https://git.kernel.org/stable/c/a6771f343af90a25f3a14911634562bb5621df02\"}, {\"url\": \"https://git.kernel.org/stable/c/d909d381c3152393421403be4b6435f17a2378b4\"}, {\"url\": \"https://git.kernel.org/stable/c/a3812a47a32022ca76bf46ddacdd823dc2aabf8b\"}, {\"url\": \"https://git.kernel.org/stable/c/6fc19b3d8a45ff0e5d50ec8184cee1d5eac1a8ba\"}, {\"url\": \"https://git.kernel.org/stable/c/88c49d9c896143cdc0f77197c4dcf24140375e89\"}, {\"url\": \"https://git.kernel.org/stable/c/6e5e6d274956305f1fc0340522b38f5f5be74bdb\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nio_uring: drop any code related to SCM_RIGHTS\\n\\nThis is dead code after we dropped support for passing io_uring fds\\nover SCM_RIGHTS, get rid of it.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.273\", \"versionStartIncluding\": \"5.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.214\", \"versionStartIncluding\": \"5.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.153\", \"versionStartIncluding\": \"5.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.83\", \"versionStartIncluding\": \"5.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.23\", \"versionStartIncluding\": \"5.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.11\", \"versionStartIncluding\": \"5.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8\", \"versionStartIncluding\": \"5.1\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T09:10:53.267Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-52656\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T09:10:53.267Z\", \"dateReserved\": \"2024-03-06T09:52:12.099Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-13T13:12:35.333Z\", \"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.


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.