{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-71266","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-03-17T09:08:18.457Z","datePublished":"2026-03-18T10:05:02.997Z","dateUpdated":"2026-05-11T21:57:04.405Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:57:04.405Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nfs: ntfs3: check return value of indx_find to avoid infinite loop\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 dentry in the ntfs3 filesystem can cause the kernel to hang\nduring the lookup operations. By setting the HAS_SUB_NODE flag in an\nINDEX_ENTRY within a directory's INDEX_ALLOCATION block and manipulating the\nVCN pointer, an attacker can cause the indx_find() function to repeatedly\nread the same block, allocating 4 KB of memory each time. The kernel lacks\nVCN loop detection and depth limits, causing memory exhaustion and an OOM\ncrash.\n\nThis patch adds a return value check for fnd_push() to prevent a memory\nexhaustion vulnerability caused by infinite loops. When the index exceeds the\nsize of the fnd->nodes array, fnd_push() returns -EINVAL. The indx_find()\nfunction checks this return value and stops processing, preventing further\nmemory allocation."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ntfs3/index.c"],"versions":[{"version":"82cae269cfa953032fbb8980a7d554d60fb00b17","lessThan":"14c3188afbedfd5178bbabb8002487ea14b37b56","status":"affected","versionType":"git"},{"version":"82cae269cfa953032fbb8980a7d554d60fb00b17","lessThan":"435d34719db0e130f6f0c621d67ed524cc1a7d10","status":"affected","versionType":"git"},{"version":"82cae269cfa953032fbb8980a7d554d60fb00b17","lessThan":"68e32694be231c1cdb99b7637a657314e88e1a96","status":"affected","versionType":"git"},{"version":"82cae269cfa953032fbb8980a7d554d60fb00b17","lessThan":"398e768d1accd1f5645492ab996005d7aa84a5b0","status":"affected","versionType":"git"},{"version":"82cae269cfa953032fbb8980a7d554d60fb00b17","lessThan":"b0ea441f44ce64fa514a415d4a9e6e2b06e7946c","status":"affected","versionType":"git"},{"version":"82cae269cfa953032fbb8980a7d554d60fb00b17","lessThan":"0ad7a1be44479503dbe5c699759861ef5b8bd70c","status":"affected","versionType":"git"},{"version":"82cae269cfa953032fbb8980a7d554d60fb00b17","lessThan":"1732053c8a6b360e2d5afb1b34fe9779398b072c","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ntfs3/index.c"],"versions":[{"version":"5.15","status":"affected"},{"version":"0","lessThan":"5.15","status":"unaffected","versionType":"semver"},{"version":"5.15.202","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.165","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.128","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.75","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.16","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19.6","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"5.15.202"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.1.165"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.6.128"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.12.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.18.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.19.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"7.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/14c3188afbedfd5178bbabb8002487ea14b37b56"},{"url":"https://git.kernel.org/stable/c/435d34719db0e130f6f0c621d67ed524cc1a7d10"},{"url":"https://git.kernel.org/stable/c/68e32694be231c1cdb99b7637a657314e88e1a96"},{"url":"https://git.kernel.org/stable/c/398e768d1accd1f5645492ab996005d7aa84a5b0"},{"url":"https://git.kernel.org/stable/c/b0ea441f44ce64fa514a415d4a9e6e2b06e7946c"},{"url":"https://git.kernel.org/stable/c/0ad7a1be44479503dbe5c699759861ef5b8bd70c"},{"url":"https://git.kernel.org/stable/c/1732053c8a6b360e2d5afb1b34fe9779398b072c"}],"title":"fs: ntfs3: check return value of indx_find to avoid infinite loop","x_generator":{"engine":"bippy-1.2.0"}}}}