CVE-2023-4732 (GCVE-0-2023-4732)
Vulnerability from cvelistv5 – Published: 2023-10-03 16:55 – Updated: 2025-11-07 13:03
VLAI
EPSS
VEX
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)
CWE
- CWE-366 - Race Condition within a Thread
Assigner
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 | CPE status | |
|---|---|---|---|---|
| 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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"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-08-06T19:20:45+00:00",
"cve": "CVE-2023-4732",
"id": "CVE-2023-4732",
"initial_release_date": "2023-09-02T00:00:00+00:00",
"product_status:fixed": "399",
"product_status:known_not_affected": "150",
"source": "Red Hat CSAF VEX",
"status": "final",
"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",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-4732.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-07-28T23:49:09Z",
"cve": "CVE-2023-4732",
"id": "CVE-2023-4732",
"initial_release_date": "2023-09-05T01:22:08Z",
"product_status:known_not_affected": "363",
"product_status:recommended": "20",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2023-4732",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-4732.json",
"version": "19"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
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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.
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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