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CVE-2025-68350

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CVE-2025-68350

Published: Dec 24, 2025

Modified: May 11, 2026

PUBLISHED

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.

VendorProductVersions

Linux

Linux

affected
9fd688678dd86e3be32a35e3b2c5cc3ef0c4e257 - < 88fc3dd6e631b3e2975f898c6c2b6bc6f7058b44
affected
9fd688678dd86e3be32a35e3b2c5cc3ef0c4e257 - < d70a5804c563b5e34825353ba9927509df709651

Linux

Linux

affected
6.18
unaffected
0 - < 6.18
unaffected
6.18.2 - <= 6.18.*
unaffected
6.19 - <= *

References

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