FKIE_CVE-2023-4273
Vulnerability from fkie_nvd - Published: 2023-08-09 15:15 - Updated: 2026-10-14 22:17
Severity
6.0 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
6.7 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
6.7 (Medium) - CVSS:3.1/
Summary
A flaw was found in the exFAT driver of the Linux kernel. The vulnerability exists in the implementation of the file name reconstruction function, which is responsible for reading file name entries from a directory index and merging file name parts belonging to one file into a single long file name. Since the file name characters are copied into a stack variable, a local privileged attacker could use this flaw to overflow the kernel stack.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | 6.5 | |
| linux | linux_kernel | 6.5 | |
| linux | linux_kernel | 6.5 | |
| linux | linux_kernel | 6.5 | |
| fedoraproject | fedora | 37 | |
| fedoraproject | fedora | 38 | |
| redhat | enterprise_linux | 9.0 | |
| debian | debian_linux | 11.0 | |
| debian | debian_linux | 12.0 | |
| netapp | h300s_firmware | - | |
| netapp | h300s | - | |
| netapp | h500s_firmware | - | |
| netapp | h500s | - | |
| netapp | h700s_firmware | - | |
| netapp | h700s | - | |
| netapp | h410s_firmware | - | |
| netapp | h410s | - |
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"value": "A flaw was found in the exFAT driver of the Linux kernel. The vulnerability exists in the implementation of the file name reconstruction function, which is responsible for reading file name entries from a directory index and merging file name parts belonging to one file into a single long file name. Since the file name characters are copied into a stack variable, a local privileged attacker could use this flaw to overflow the kernel stack."
},
{
"lang": "es",
"value": "Se ha encontrado un fallo en el controlador exFAT del n\u00facleo de Linux. La vulnerabilidad se encuentra en la implementaci\u00f3n de la funci\u00f3n de reconstrucci\u00f3n de nombres de archivo, que se encarga de leer entradas de nombres de archivo de un \u00edndice de directorio y fusionar partes de nombres de archivo pertenecientes a un archivo en un \u00fanico nombre de archivo largo. Dado que los caracteres del nombre de archivo se copian en una variable de pila, un atacante local con privilegios podr\u00eda utilizar este fallo para desbordar la pila del kernel."
}
],
"id": "CVE-2023-4273",
"lastModified": "2026-10-14T22:17:17.240",
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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
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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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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.
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Related by attack behaviour
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