CVE-2025-71267 - fs: ntfs3: fix infinite loop triggered by zero-sized ATTR_LIST

CVE-2025-71267 - fs: ntfs3: fix infinite loop triggered by zero-sized ATTR_LIST

https://cvefeed.io/rssfeed/latest.atom / Wed, 03/18/2026 - 14:07
CVE ID :CVE-2025-71267
Published : March 18, 2026, 11:16 a.m. | 1 hour, 44 minutes ago
Description :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.
Severity: 0.0 | NA
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