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CVE-2023-1295 (GCVE-0-2023-1295)

Vulnerability from cvelistv5 – Published: 2023-06-28 11:08 – Updated: 2025-02-13 16:39
VLAI
Title
Privilege escalation with IO_RING_OP_CLOSE in the Linux Kernel
Summary
A time-of-check to time-of-use issue exists in io_uring subsystem's IORING_OP_CLOSE operation in the Linux kernel's versions 5.6 - 5.11 (inclusive), which allows a local user to elevate their privileges to root. Introduced in b5dba59e0cf7e2cc4d3b3b1ac5fe81ddf21959eb, patched in 9eac1904d3364254d622bf2c771c4f85cd435fc2, backported to stable in 788d0824269bef539fe31a785b1517882eafed93.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Kernel Affected: 5.6 , ≤ 5.11 (custom)
guessed Create a notification for this product.
Credits
Bing-Jhong Billy Jheng of Starlabs
Show details on NVD website
To clipboard 

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            "url": "https://kernel.dance/788d0824269bef539fe31a785b1517882eafed93"
          },
          {
            "source": "cve-coordination@google.com",
            "tags": [
              "Patch"
            ],
            "url": "https://kernel.dance/9eac1904d3364254d622bf2c771c4f85cd435fc2"
          },
          {
            "source": "cve-coordination@google.com",
            "tags": [
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20230731-0006/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=788d0824269bef539fe31a785b1517882eafed93"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9eac1904d3364254d622bf2c771c4f85cd435fc2"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b5dba59e0cf7e2cc4d3b3b1ac5fe81ddf21959eb"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "https://kernel.dance/788d0824269bef539fe31a785b1517882eafed93"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "https://kernel.dance/9eac1904d3364254d622bf2c771c4f85cd435fc2"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20230731-0006/"
          }
        ],
        "sourceIdentifier": "cve-coordination@google.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-367"
              }
            ],
            "source": "cve-coordination@google.com",
            "type": "Secondary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-367"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-08-06T19:54:06+00:00",
      "cve": "CVE-2023-1295",
      "id": "CVE-2023-1295",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: io_uring: TOCTOU vulnerability in IORING_OP_CLOSE operation",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-1295.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-09-02T01:58:39Z",
      "cve": "CVE-2023-1295",
      "id": "CVE-2023-1295",
      "initial_release_date": "2023-06-30T01:14:07Z",
      "product_status:known_not_affected": "406",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-1295",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-1295.json",
      "version": "17"
    }
  }
}



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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.