CVE-2025-71267fs: ntfs3: fix infinite loop triggered by zero-sized ATTR_LIST
Updated under an hour ago ()
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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.
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from be71b5cba2e6485e8959da7a9f9a44461a1bb074 before 9267d99fade76d44d4a133599524031fe684156e; from be71b5cba2e6485e8959da7a9f9a44461a1bb074 before 976e6a7c51fabf150478decbe8ef5d9a26039b7c; from be71b5cba2e6485e8959da7a9f9a44461a1bb074 before 8d8c70b57dbeda3eb165c0940b97e85373ca9354; from be71b5cba2e6485e8959da7a9f9a44461a1bb074 before 7ef219656febf5ae06ae56b1fce47ebd05f92b68; from be71b5cba2e6485e8959da7a9f9a44461a1bb074 before 9779a6eaaabdf47aa57910d352b398ad742e6a5f; from be71b5cba2e6485e8959da7a9f9a44461a1bb074 before fd508939dbca5eceefb2d0c2564beb15469572f2; from be71b5cba2e6485e8959da7a9f9a44461a1bb074 before 06909b2549d631a47fcda249d34be26f7ca1711d | CNA record |
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
linux linux_kernel linux:linux_kernel | from 5.15 before 5.15.202; from 5.16 before 6.1.165; from 6.2 before 6.6.128; from 6.7 before 6.12.75; from 6.13 before 6.18.16; from 6.19 before 6.19.6 | NVD |
References
- https://git.kernel.org/stable/c/9267d99fade76d44d4a133599524031fe684156epatch
- https://git.kernel.org/stable/c/976e6a7c51fabf150478decbe8ef5d9a26039b7cpatch
- https://git.kernel.org/stable/c/8d8c70b57dbeda3eb165c0940b97e85373ca9354patch
- https://git.kernel.org/stable/c/7ef219656febf5ae06ae56b1fce47ebd05f92b68patch
- https://git.kernel.org/stable/c/9779a6eaaabdf47aa57910d352b398ad742e6a5fpatch
- https://git.kernel.org/stable/c/fd508939dbca5eceefb2d0c2564beb15469572f2patch
- https://git.kernel.org/stable/c/06909b2549d631a47fcda249d34be26f7ca1711dpatch
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.