{"id":"CVE-2025-71267","state":"PUBLISHED","title":"fs: ntfs3: fix infinite loop triggered by zero-sized ATTR_LIST","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfs: ntfs3: fix infinite loop triggered by zero-sized ATTR_LIST\n\nWe found an infinite loop bug in the ntfs3 file system that can lead to a\nDenial-of-Service (DoS) condition.\n\nA malformed NTFS image can cause an infinite loop when an ATTR_LIST attribute\nindicates a zero data size while the driver allocates memory for it.\n\nWhen ntfs_load_attr_list() processes a resident ATTR_LIST with data_size set\nto zero, it still allocates memory because of al_aligned(0). This creates an\ninconsistent state where ni->attr_list.size is zero, but ni->attr_list.le is\nnon-null. This causes ni_enum_attr_ex to incorrectly assume that no attribute\nlist exists and enumerates only the primary MFT record. When it finds\nATTR_LIST, the code reloads it and restarts the enumeration, repeating\nindefinitely. The mount operation never completes, hanging the kernel thread.\n\nThis patch adds validation to ensure that data_size is non-zero before memory\nallocation. When a zero-sized ATTR_LIST is detected, the function returns\n-EINVAL, preventing a DoS vulnerability.","publishedAt":"2026-03-18T10:05:04.008Z","updatedAt":"2026-10-15T01:11:22.354Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"be71b5cba2e6485e8959da7a9f9a44461a1bb074","status":"affected","lessThan":"9267d99fade76d44d4a133599524031fe684156e","versionType":"git"},{"version":"be71b5cba2e6485e8959da7a9f9a44461a1bb074","status":"affected","lessThan":"976e6a7c51fabf150478decbe8ef5d9a26039b7c","versionType":"git"},{"version":"be71b5cba2e6485e8959da7a9f9a44461a1bb074","status":"affected","lessThan":"8d8c70b57dbeda3eb165c0940b97e85373ca9354","versionType":"git"},{"version":"be71b5cba2e6485e8959da7a9f9a44461a1bb074","status":"affected","lessThan":"7ef219656febf5ae06ae56b1fce47ebd05f92b68","versionType":"git"},{"version":"be71b5cba2e6485e8959da7a9f9a44461a1bb074","status":"affected","lessThan":"9779a6eaaabdf47aa57910d352b398ad742e6a5f","versionType":"git"},{"version":"be71b5cba2e6485e8959da7a9f9a44461a1bb074","status":"affected","lessThan":"fd508939dbca5eceefb2d0c2564beb15469572f2","versionType":"git"},{"version":"be71b5cba2e6485e8959da7a9f9a44461a1bb074","status":"affected","lessThan":"06909b2549d631a47fcda249d34be26f7ca1711d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ntfs3/attrlist.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"5.15.202","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.165","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.128","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.75","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.16","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.6","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ntfs3/attrlist.c"]}],"references":["https://git.kernel.org/stable/c/9267d99fade76d44d4a133599524031fe684156e","https://git.kernel.org/stable/c/976e6a7c51fabf150478decbe8ef5d9a26039b7c","https://git.kernel.org/stable/c/8d8c70b57dbeda3eb165c0940b97e85373ca9354","https://git.kernel.org/stable/c/7ef219656febf5ae06ae56b1fce47ebd05f92b68","https://git.kernel.org/stable/c/9779a6eaaabdf47aa57910d352b398ad742e6a5f","https://git.kernel.org/stable/c/fd508939dbca5eceefb2d0c2564beb15469572f2","https://git.kernel.org/stable/c/06909b2549d631a47fcda249d34be26f7ca1711d","https://cert-portal.siemens.com/productcert/html/ssa-082556.html","https://cert-portal.siemens.com/productcert/html/ssa-019113.html","https://cert-portal.siemens.com/productcert/html/ssa-457936.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:10:04.440Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/71xxx/CVE-2025-71267.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-71267","state":"PUBLISHED","datePublished":"2026-03-18T10:05:04.008Z","dateUpdated":"2026-10-15T01:11:22.354Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-03-17T09:08:18.457Z"},"containers":{"cna":{"title":"fs: ntfs3: fix infinite loop triggered by zero-sized ATTR_LIST","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nfs: ntfs3: fix infinite loop triggered by zero-sized ATTR_LIST\n\nWe found an infinite loop bug in the ntfs3 file system that can lead to a\nDenial-of-Service (DoS) condition.\n\nA malformed NTFS image can cause an infinite loop when an ATTR_LIST attribute\nindicates a zero data size while the driver allocates memory for it.\n\nWhen ntfs_load_attr_list() processes a resident ATTR_LIST with data_size set\nto zero, it still allocates memory because of al_aligned(0). This creates an\ninconsistent state where ni->attr_list.size is zero, but ni->attr_list.le is\nnon-null. This causes ni_enum_attr_ex to incorrectly assume that no attribute\nlist exists and enumerates only the primary MFT record. When it finds\nATTR_LIST, the code reloads it and restarts the enumeration, repeating\nindefinitely. The mount operation never completes, hanging the kernel thread.\n\nThis patch adds validation to ensure that data_size is non-zero before memory\nallocation. When a zero-sized ATTR_LIST is detected, the function returns\n-EINVAL, preventing a DoS 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