CVE-2025-68350
NoneCVSS
—
EPSS
0.2%
Published
Dec 24, 2025
CISA due date
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The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Linux | Kernel | 6.18.0 | 6.18.2 |
| openSUSE:Tumbleweed | kernel-source | 0 | 6.18.5-1.1 |
| openSUSE:Tumbleweed | kernel-source-longterm | 0 | 6.18.16-1.1 |
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