CVE-2025-71267
fs: ntfs3: fix infinite loop triggered by zero-sized ATTR_LIST
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved: fs: ntfs3: fix infinite loop triggered by zero-sized ATTR_LIST We found an infinite loop bug in the ntfs3 file system that can lead to a
Denial-of-Service (DoS) condition. A malformed NTFS image can cause an infinite loop when an ATTR_LIST attribute
indicates a zero data size while the driver allocates memory for it. When ntfs_load_attr_list() processes a resident ATTR_LIST with data_size set
to zero, it still allocates memory because of al_aligned(0). This creates an
inconsistent state where ni->attr_list.size is zero, but ni->attr_list.le is
non-null. This causes ni_enum_attr_ex to incorrectly assume that no attribute
list exists and enumerates only the primary MFT record. When it finds
ATTR_LIST, the code reloads it and restarts the enumeration, repeating
indefinitely. The mount operation never completes, hanging the kernel thread. This patch adds validation to ensure that data_size is non-zero before memory
allocation. When a zero-sized ATTR_LIST is detected, the function returns
-EINVAL, preventing a DoS vulnerability.
En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: fs: ntfs3: corrige bucle infinito provocado por ATTR_LIST de tamaño cero Se encontró un error de bucle infinito en el sistema de archivos ntfs3 que puede llevar a una condición de Denegación de Servicio (DoS). Una imagen NTFS malformada puede causar un bucle infinito cuando un atributo ATTR_LIST indica un tamaño de datos cero mientras el controlador asigna memoria para ello. Cuando ntfs_load_attr_list() procesa un ATTR_LIST residente con data_size establecido en cero, todavía asigna memoria debido a al_aligned(0). Esto crea un estado inconsistente donde ni->attr_list.size es cero, pero ni->attr_list.le no es nulo. Esto hace que ni_enum_attr_ex asuma incorrectamente que no existe ninguna lista de atributos y enumere solo el registro MFT primario. Cuando encuentra ATTR_LIST, el código lo recarga y reinicia la enumeración, repitiéndose indefinidamente. La operación de montaje nunca se completa, colgando el hilo del kernel. Este parche añade validación para asegurar que data_size no sea cero antes de la asignación de memoria. Cuando se detecta un ATTR_LIST de tamaño cero, la función devuelve -EINVAL, previniendo una vulnerabilidad de DoS.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2026-03-17 CVE Reserved
- 2026-03-18 CVE Published
- 2026-04-19 EPSS Updated
- 2026-05-11 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (8)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/be71b5cba2e6485e8959da7a9f9a44461a1bb074 | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.15 < 5.15.202 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.15 < 5.15.202" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.15 < 6.1.165 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.15 < 6.1.165" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.15 < 6.6.128 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.15 < 6.6.128" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.15 < 6.12.75 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.15 < 6.12.75" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.15 < 6.18.16 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.15 < 6.18.16" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.15 < 6.19.6 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.15 < 6.19.6" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.15 < 7.0 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.15 < 7.0" | en |
Affected
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