Vulnerability-Lookup

GHSA-8VJX-3VGX-66MX

Vulnerability from github – Published: 2023-01-11 15:30 – Updated: 2026-09-01 18:30

Details

There exists a use-after-free vulnerability in the Linux kernel through io_uring and the IORING_OP_SPLICE operation. If IORING_OP_SPLICE is missing the IO_WQ_WORK_FILES flag, which signals that the operation won't use current->nsproxy, so its reference counter is not increased. This assumption is not always true as calling io_splice on specific files will call the get_uts function which will use current->nsproxy leading to invalidly decreasing its reference counter later causing the use-after-free vulnerability. We recommend upgrading to version 5.10.160 or above

Severity

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2022-4696"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416",
      "CWE-763"
    ],
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    "github_reviewed_at": null,
    "nvd_published_at": "2023-01-11T13:15:00Z",
    "severity": "HIGH"
  },
  "details": "There exists a use-after-free vulnerability in the Linux kernel through io_uring and the IORING_OP_SPLICE operation. If IORING_OP_SPLICE is missing the IO_WQ_WORK_FILES flag, which signals that the operation won\u0027t use current-\u003ensproxy, so its reference counter is not increased. This assumption is not always true as calling io_splice on specific files will call the get_uts function which will use current-\u003ensproxy leading to invalidly decreasing its reference counter later causing the use-after-free vulnerability. We recommend upgrading to version 5.10.160 or above",
  "id": "GHSA-8vjx-3vgx-66mx",
  "modified": "2026-09-01T18:30:27Z",
  "published": "2023-01-11T15:30:42Z",
  "references": [
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      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-4696"
    },
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      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y\u0026id=75454b4bbfc7e6a4dd8338556f36ea9107ddf61a"
    },
    {
      "type": "WEB",
      "url": "https://kernel.dance/#75454b4bbfc7e6a4dd8338556f36ea9107ddf61a"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20230223-0003"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
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      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
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}

CVE-2022-4696 (GCVE-0-2022-4696)

Vulnerability from cvelistv5 – Published: 2023-01-11 12:33 – Updated: 2024-08-03 01:48

Summary

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 2024-08-01 13:26 UTC

CWE

CWE-763 - Release of Invalid Pointer or Reference

Assigner

Google Google root

References

3 references

URL	Tags
https://kernel.dance/#75454b4bbfc7e6a4dd8338556f3…
https://git.kernel.org/pub/scm/linux/kernel/git/s…
https://security.netapp.com/advisory/ntap-2023022…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux Kernel	Affected: 5.7-rc1 , ≤ 5.10.159 (custom)
linux	linux_kernel	Affected: 5.7-rc1 , ≤ 5.10.159 (custom) cpe:2.3:o:linux:linux_kernel::::::::

Date Public

2022-12-15 05:43

Credits

Bing-Jhong Billy Jheng of Starlabs

Show details on NVD website

JSON

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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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.