CVE-2025-68350
N/A
N/A
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 9fd688678dd86e3be32a35e3b2c5cc3ef0c4e257 < 88fc3dd6e631b3e2975f898c6c2b6bc6f7058b44 | affected |
| Linux | Linux | 9fd688678dd86e3be32a35e3b2c5cc3ef0c4e257 < d70a5804c563b5e34825353ba9927509df709651 | affected |
| Linux | Linux | 6.18 | affected |
| Linux | Linux | 0 < 6.18 | unaffected |
| Linux | Linux | 6.18.2 <= 6.18.* | unaffected |
| Linux | Linux | 6.19 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/88fc3dd6e631b3e2975f898c6c2b6bc6f7058b44
- https://git.kernel.org/stable/c/d70a5804c563b5e34825353ba9927509df709651
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