Vulnerability-Lookup

OESA-2023-1152 (CVE-2023-23586)

Vulnerability from osv_openeuler – Published: 2023-03-10 11:05 – Updated: 2026-08-06 11:05 – Source website

Summary

kernel security update

Details

The Linux Kernel, the operating system core itself.

Security Fix(es):

Due to a vulnerability in the io_uring subsystem, it is possible to leak kernel memory information to the user process. timens_install calls current_is_single_threaded to determine if the current process is single-threaded, but this call does not consider io_uring's io_worker threads, thus it is possible to insert a time namespace's vvar page to process's memory space via a page fault. When this time namespace is destroyed, the vvar page is also freed, but not removed from the process' memory, and a next page allocated by the kernel will be still available from the user-space process and can leak memory contents via this (read-only) use-after-free vulnerability. We recommend upgrading past version 5.10.161 or commit 788d0824269bef539fe31a785b1517882eafed93 https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/io_uring(CVE-2023-23586)

In the Linux kernel 6.0.8, there is an out-of-bounds read in ntfs_attr_find in fs/ntfs/attrib.c.(CVE-2023-26607)

Severity

7.1 (High)


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

References

URL

Type

	https://www.openeuler.org/en/security/safety-bull…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2023-23586	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2023-26607	ADVISORY

JSON

To clipboard

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  "details": "The Linux Kernel, the operating system core itself.\r\n\r\nSecurity Fix(es):\r\n\r\nDue to a vulnerability in the io_uring subsystem, it is possible to leak kernel memory information to the user process. timens_install calls current_is_single_threaded to determine if the current process is single-threaded, but this call does not consider io_uring\u0026apos;s io_worker threads, thus it is possible to insert a time namespace\u0026apos;s vvar page to process\u0026apos;s memory space via a page fault. When this time namespace is destroyed, the vvar page is also freed, but not removed from the process\u0026apos; memory, and a next page allocated by the kernel will be still available from the user-space process and can leak memory contents via this (read-only) use-after-free vulnerability. We recommend upgrading past version 5.10.161 or commit 788d0824269bef539fe31a785b1517882eafed93 https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/io_uring(CVE-2023-23586)\r\n\r\nIn the Linux kernel 6.0.8, there is an out-of-bounds read in ntfs_attr_find in fs/ntfs/attrib.c.(CVE-2023-26607)",
  "id": "OESA-2023-1152",
  "modified": "2026-08-06T11:05:37Z",
  "published": "2023-03-10T11:05:37Z",
  "references": [
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    }
  ],
  "summary": "kernel security update",
  "upstream": [
    "CVE-2023-23586",
    "CVE-2023-26607"
  ]
}

CVE-2023-23586 (GCVE-0-2023-23586)

Vulnerability from cvelistv5 – Published: 2023-02-17 12:25 – Updated: 2025-03-12 20:08

Title

Use after free in io_uring in the Linux Kernel

Summary

Severity

5.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-03-12 20:08 UTC

CWE

CWE-416 - Use After Free

Assigner

Google Google root

References

2 references

URL	Tags
https://git.kernel.org/pub/scm/linux/kernel/git/s…
https://kernel.dance/#788d0824269bef539fe31a785b1…

Impacted products

1 product

Vendor	Product	Version
Linux	Linux Kernel	Affected: 5.6 , ≤ 5.10.161 (custom)

Date Public

2022-12-22 14:30

Credits

Bing-Jhong Billy Jheng of Starlabs

Show details on NVD website

JSON

To clipboard

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CVE-2023-26607 (GCVE-0-2023-26607)

Vulnerability from cvelistv5 – Published: 2023-02-26 00:00 – Updated: 2025-05-05 16:03

Summary

In the Linux kernel 6.0.8, there is an out-of-bounds read in ntfs_attr_find in fs/ntfs/attrib.c.

Severity

7.1 (High)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-23 13:30 UTC

CWE

n/a
CWE-125 - Out-of-bounds Read

Assigner

mitre mitre root

References

4 references

URL	Tags
https://lkml.org/lkml/2023/2/21/1353
https://security.netapp.com/advisory/ntap-2023031…
https://git.kernel.org/cgit/linux/kernel/git/torv…
https://bugzilla.suse.com/show_bug.cgi?id=1208703

Show details on NVD website

JSON

To clipboard

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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.

Action not permitted

OESA-2023-1152 (CVE-2023-23586)

CVE-2023-23586 (GCVE-0-2023-23586)

CVE-2023-26607 (GCVE-0-2023-26607)

Tags

Sightings

Nomenclature

Related by attack behaviour