{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-68350","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-12-16T14:48:05.300Z","datePublished":"2025-12-24T10:32:41.931Z","dateUpdated":"2026-05-11T21:51:30.130Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:51:30.130Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nexfat: fix divide-by-zero in exfat_allocate_bitmap\n\nThe variable max_ra_count can be 0 in exfat_allocate_bitmap(),\nwhich causes a divide-by-zero error in the subsequent modulo operation\n(i % max_ra_count), leading to a system crash.\nWhen max_ra_count is 0, it means that readahead is not used. This patch\nload the bitmap without readahead."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/exfat/balloc.c"],"versions":[{"version":"9fd688678dd86e3be32a35e3b2c5cc3ef0c4e257","lessThan":"88fc3dd6e631b3e2975f898c6c2b6bc6f7058b44","status":"affected","versionType":"git"},{"version":"9fd688678dd86e3be32a35e3b2c5cc3ef0c4e257","lessThan":"d70a5804c563b5e34825353ba9927509df709651","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/balloc.c"],"versions":[{"version":"6.18","status":"affected"},{"version":"0","lessThan":"6.18","status":"unaffected","versionType":"semver"},{"version":"6.18.2","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19","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":"6.18","versionEndExcluding":"6.18.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.18","versionEndExcluding":"6.19"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/88fc3dd6e631b3e2975f898c6c2b6bc6f7058b44"},{"url":"https://git.kernel.org/stable/c/d70a5804c563b5e34825353ba9927509df709651"}],"title":"exfat: fix divide-by-zero in exfat_allocate_bitmap","x_generator":{"engine":"bippy-1.2.0"}}}}