CVE-2025-68350
Unknown
Description
In the Linux kernel, the following vulnerability has been resolved: exfat: fix divide-by-zero in exfat_allocate_bitmap The variable max_ra_count can be 0 in exfat_allocate_bitmap(), which causes a divide-by-zero error in the subsequent modulo operation (i % max_ra_count), leading to a system crash. When max_ra_count is 0, it means that readahead is not used. This patch load the bitmap without readahead.
SeverityUnknown
CVSS—
Exploit probability—
Product
Linux
PublishedDec 24, 2025
First seenDec 24, 2025
How to fix
Update
- Linux Linux88fc3dd6e631b3e2975f898c6c2b6bc6f7058b44, d70a5804c563b5e34825353ba9927509df709651 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 9fd688678dd86e3be32a35e3b2c5cc3ef0c4e257 ≤ v < 88fc3dd6e631b3e2975f898c6c2b6bc6f7058b44, 9fd688678dd86e3be32a35e3b2c5cc3ef0c4e257 ≤ v < d70a5804c563b5e34825353ba9927509df709651, 6.18 | 88fc3dd6e631b3e2975f898c6c2b6bc6f7058b44, d70a5804c563b5e34825353ba9927509df709651 |
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