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CVE-2025-68350

Not scored yetLast modified Oct 19, 2026

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.

Metrics

No CVSS score has been published yet.

Affected software

Vendor	Product	Versions
Linux	Linux	>= 9fd688678dd86e3be32a35e3b2c5cc3ef0c4e257, < 88fc3dd6e631b3e2975f898c6c2b6bc6f7058b44; >= 9fd688678dd86e3be32a35e3b2c5cc3ef0c4e257, < d70a5804c563b5e34825353ba9927509df709651
Linux	Linux	6.18

References

Timeline

Published: Dec 24, 2025
Last modified: Oct 19, 2026
NVD status: Deferred

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CVE-2025-68350: Unscored | Vulnix