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CVE-2023-3389 (GCVE-0-2023-3389)

Vulnerability from cvelistv5 – Published: 2023-06-28 19:33 – Updated: 2025-03-05 18:55
VLAI
Title
Use after free in io_uring in the Linux Kernel
Summary
A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation. Racing a io_uring cancel poll request with a linked timeout can cause a UAF in a hrtimer. We recommend upgrading past commit ef7dfac51d8ed961b742218f526bd589f3900a59 (4716c73b188566865bdd79c3a6709696a224ac04 for 5.10 stable and 0e388fce7aec40992eadee654193cad345d62663 for 5.15 stable).
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: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-03-05 18:36 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Kernel Affected: 5.13 , < 6.4 (custom)
Affected: 5.10.162 , < 5.10.185 (custom)
guessed Create a notification for this product.
Date Public
2023-06-18 02:21
Credits
Querijn Voet
Show details on NVD website
To clipboard 

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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-06T20:17:11+00:00",
      "cve": "CVE-2023-3389",
      "id": "CVE-2023-3389",
      "initial_release_date": "2023-06-16T00:00:00+00:00",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Racing a io_uring cancel poll request with a linked timeout can cause a UAF in a hrtimer",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-3389.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-03T00:35:55Z",
      "cve": "CVE-2023-3389",
      "id": "CVE-2023-3389",
      "initial_release_date": "2025-02-14T06:57:09Z",
      "product_status:known_affected": "203",
      "product_status:known_not_affected": "310",
      "product_status:recommended": "822",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-3389",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-3389.json",
      "version": "28"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.15.y\u0026id=0e388fce7aec40992eadee654193cad345d62663\", \"tags\": [\"patch\", \"x_transferred\"]}, {\"url\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y\u0026id=4716c73b188566865bdd79c3a6709696a224ac04\", \"tags\": [\"patch\", \"x_transferred\"]}, {\"url\": \"https://kernel.dance/0e388fce7aec40992eadee654193cad345d62663\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://kernel.dance/4716c73b188566865bdd79c3a6709696a224ac04\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ef7dfac51d8ed961b742218f526bd589f3900a59\", \"tags\": [\"patch\", \"x_transferred\"]}, {\"url\": \"https://kernel.dance/ef7dfac51d8ed961b742218f526bd589f3900a59\", \"tags\": [\"x_transferred\"]}, {\"url\": 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      "cveMetadata": "{\"cveId\": \"CVE-2023-3389\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-03-05T18:55:17.919Z\", \"dateReserved\": \"2023-06-23T13:43:00.034Z\", \"assignerOrgId\": \"14ed7db2-1595-443d-9d34-6215bf890778\", \"datePublished\": \"2023-06-28T19:33:55.097Z\", \"assignerShortName\": \"Google\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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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

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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.