CVE-2023-2008 (GCVE-0-2023-2008)
Vulnerability from cvelistv5 – Published: 2023-04-14 00:00 – Updated: 2026-08-10 17:56
VLAI
EPSS
VEX
Title
Kernel: udmabuf: improper validation of array index leading to local privilege escalation
Summary
A flaw was found in the Linux kernel's udmabuf device driver, within a fault handler. This issue occurs due to the lack of proper validation of user-supplied data, which can result in memory access past the end of an array. This may allow an attacker to escalate privileges and execute arbitrary code in the context of the kernel.
Severity
8.2 (High)
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-23 13:28 UTC
CWE
- CWE-129 - Improper Validation of Array Index
Assigner
References
10 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2022:7933 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2022:8267 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2023:3465 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2023:3470 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2023:3490 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2023-2008 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2186862 | issue-trackingx_refsource_REDHAT |
| https://www.zerodayinitiative.com/advisories/ZDI-… | |
| https://github.com/torvalds/linux/commit/05b252cc… | x_transferred |
| https://security.netapp.com/advisory/ntap-2023051… | x_transferred |
Impacted products
9 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | kernel |
Affected:
4.20 , < 5.4.202
(semver)
Affected: 5.5 , < 5.10.127 (semver) Affected: 5.11 , < 5.15.51 (semver) Affected: 5.16 , < 5.18.8 (semver) Unaffected: 5.19 (semver) |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:5.14.0-162.6.1.el9_1 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9::appstream cpe:/a:redhat:enterprise_linux:9::crb cpe:/o:redhat:enterprise_linux:9::baseos |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:5.14.0-162.6.1.rt21.168.el9_1 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9::nfv cpe:/a:redhat:enterprise_linux:9::realtime |
|
| Red Hat | Red Hat Enterprise Linux 9.0 Extended Update Support |
Unaffected:
0:5.14.0-70.58.1.el9_0 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.0::appstream cpe:/a:redhat:rhel_eus:9.0::crb cpe:/o:redhat:rhel_eus:9.0::baseos |
|
| Red Hat | Red Hat Enterprise Linux 9.0 Extended Update Support |
Unaffected:
0:5.14.0-70.58.1.rt21.129.el9_0 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.0::nfv cpe:/a:redhat:rhel_eus:9.0::realtime |
|
| Red Hat | Red Hat Enterprise Linux 9.0 Extended Update Support |
cpe:/o:redhat:rhel_eus:9.0::baseos |
|
| 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 8 |
cpe:/o:redhat:enterprise_linux:8 |
Date Public
2023-04-13 00:00
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"status": "final",
"title": "kernel: udmabuf: improper validation of array index leading to local privilege escalation",
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}
}
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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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