Vulnerability-Lookup

GHSA-C9MW-VPXM-P7RQ

Vulnerability from github – Published: 2023-10-03 18:30 – Updated: 2023-11-14 21:30

Details

A flaw was found in the Linux Kernel's memory management subsytem. A task exits and releases a 2MB page in a vma (vm_area_struct) and hits the BUG statement in pfn_swap_entry_to_page() referencing pmd_t x.

Severity

4.7 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2023-4732"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-362",
      "CWE-366"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-10-03T17:15:09Z",
    "severity": "MODERATE"
  },
  "details": "A flaw was found in the Linux Kernel\u0027s memory management subsytem. A task exits and releases a 2MB page in a vma (vm_area_struct) and hits the BUG statement in pfn_swap_entry_to_page() referencing pmd_t x.",
  "id": "GHSA-c9mw-vpxm-p7rq",
  "modified": "2023-11-14T21:30:50Z",
  "published": "2023-10-03T18:30:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-4732"
    },
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      "url": "https://access.redhat.com/errata/RHSA-2023:6901"
    },
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      "url": "https://access.redhat.com/errata/RHSA-2023:7077"
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    },
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      "url": "https://access.redhat.com/errata/RHSA-2024:0412"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2023-4732"
    },
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  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2023-4732 (GCVE-0-2023-4732)

Vulnerability from cvelistv5 – Published: 2023-10-03 16:55 – Updated: 2025-11-07 13:03

Title

Kernel: race between task migrating pages and another task calling exit_mmap to release those same pages getting invalid opcode bug in include/linux/swapops.h

Summary

A flaw was found in pfn_swap_entry_to_page in memory management subsystem in the Linux Kernel. In this flaw, an attacker with a local user privilege may cause a denial of service problem due to a BUG statement referencing pmd_t x.

Severity

4.7 (Medium)


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

CWE

CWE-366 - Race Condition within a Thread

Assigner

redhat CNA under the redhat root

CNA scorecard B 81/100 over 976 records in the last 180 days details

References

6 references

URL	Tags
https://access.redhat.com/errata/RHSA-2023:6901	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:7077	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:7539	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:0412	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2023-4732	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2236982	issue-trackingx_refsource_REDHAT

Impacted products

8 products

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 0:4.18.0-513.5.1.rt7.307.el8_9 , < * (rpm) cpe:/a:redhat:enterprise_linux:8::realtime cpe:/a:redhat:enterprise_linux:8::nfv
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 0:4.18.0-513.5.1.el8_9 , < * (rpm) cpe:/a:redhat:enterprise_linux:8::crb cpe:/o:redhat:enterprise_linux:8::baseos
Red Hat	Red Hat Enterprise Linux 8.6 Extended Update Support	Unaffected: 0:4.18.0-372.87.1.el8_6 , < * (rpm) cpe:/a:redhat:rhel_eus:8.6::crb cpe:/o:redhat:rhel_eus:8.6::baseos cpe:/o:redhat:rhev_hypervisor:4.4::el8
Red Hat	Red Hat Enterprise Linux 8.8 Extended Update Support	Unaffected: 0:4.18.0-477.36.1.el8_8 , < * (rpm) cpe:/o:redhat:rhel_eus:8.8::baseos cpe:/a:redhat:rhel_eus:8.8::crb
Red Hat	Red Hat Virtualization 4 for Red Hat Enterprise Linux 8	Unaffected: 0:4.18.0-372.87.1.el8_6 , < * (rpm) cpe:/a:redhat:rhel_eus:8.6::crb cpe:/o:redhat:rhel_eus:8.6::baseos cpe:/o:redhat:rhev_hypervisor:4.4::el8
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9

Date Public

2023-09-02 00:00

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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.

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.
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GHSA-C9MW-VPXM-P7RQ

CVE-2023-4732 (GCVE-0-2023-4732)

Tags

Sightings

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