{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-38692","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-04-16T04:51:24.032Z","datePublished":"2025-09-04T15:32:46.004Z","dateUpdated":"2026-05-11T21:33:08.662Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:33:08.662Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nexfat: add cluster chain loop check for dir\n\nAn infinite loop may occur if the following conditions occur due to\nfile system corruption.\n\n(1) Condition for exfat_count_dir_entries() to loop infinitely.\n    - The cluster chain includes a loop.\n    - There is no UNUSED entry in the cluster chain.\n\n(2) Condition for exfat_create_upcase_table() to loop infinitely.\n    - The cluster chain of the root directory includes a loop.\n    - There are no UNUSED entry and up-case table entry in the cluster\n      chain of the root directory.\n\n(3) Condition for exfat_load_bitmap() to loop infinitely.\n    - The cluster chain of the root directory includes a loop.\n    - There are no UNUSED entry and bitmap entry in the cluster chain\n      of the root directory.\n\n(4) Condition for exfat_find_dir_entry() to loop infinitely.\n    - The cluster chain includes a loop.\n    - The unused directory entries were exhausted by some operation.\n\n(5) Condition for exfat_check_dir_empty() to loop infinitely.\n    - The cluster chain includes a loop.\n    - The unused directory entries were exhausted by some operation.\n    - All files and sub-directories under the directory are deleted.\n\nThis commit adds checks to break the above infinite loop."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/exfat/dir.c","fs/exfat/fatent.c","fs/exfat/namei.c","fs/exfat/super.c"],"versions":[{"version":"1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003","lessThan":"868f23286c1a13162330fa6c614fe350f78e3f82","status":"affected","versionType":"git"},{"version":"1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003","lessThan":"aa8fe7b7b73d4c9a41bb96cb3fb3092f794ecb33","status":"affected","versionType":"git"},{"version":"1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003","lessThan":"e2066ca3ef49a30920d8536fa366b2a183a808ee","status":"affected","versionType":"git"},{"version":"1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003","lessThan":"4c3cda20c4cf1871e27868d08fda06b79bc7d568","status":"affected","versionType":"git"},{"version":"1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003","lessThan":"99f9a97dce39ad413c39b92c90393bbd6778f3fd","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/exfat/dir.c","fs/exfat/fatent.c","fs/exfat/namei.c","fs/exfat/super.c"],"versions":[{"version":"5.7","status":"affected"},{"version":"0","lessThan":"5.7","status":"unaffected","versionType":"semver"},{"version":"6.6.103","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.43","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.15.11","lessThanOrEqual":"6.15.*","status":"unaffected","versionType":"semver"},{"version":"6.16.2","lessThanOrEqual":"6.16.*","status":"unaffected","versionType":"semver"},{"version":"6.17","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":"5.7","versionEndExcluding":"6.6.103"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.12.43"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.15.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.16.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.17"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/868f23286c1a13162330fa6c614fe350f78e3f82"},{"url":"https://git.kernel.org/stable/c/aa8fe7b7b73d4c9a41bb96cb3fb3092f794ecb33"},{"url":"https://git.kernel.org/stable/c/e2066ca3ef49a30920d8536fa366b2a183a808ee"},{"url":"https://git.kernel.org/stable/c/4c3cda20c4cf1871e27868d08fda06b79bc7d568"},{"url":"https://git.kernel.org/stable/c/99f9a97dce39ad413c39b92c90393bbd6778f3fd"}],"title":"exfat: add cluster chain loop check for dir","x_generator":{"engine":"bippy-1.2.0"}}}}