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Medium severity5.5NVD Advisory· Published Sep 12, 2025· Updated May 12, 2026

CVE-2025-39795

CVE-2025-39795

Description

In the Linux kernel, the following vulnerability has been resolved:

block: avoid possible overflow for chunk_sectors check in blk_stack_limits()

In blk_stack_limits(), we check that the t->chunk_sectors value is a multiple of the t->physical_block_size value.

However, by finding the chunk_sectors value in bytes, we may overflow the unsigned int which holds chunk_sectors, so change the check to be based on sectors.

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Affected products

43

Patches

Vulnerability mechanics

References

12

News mentions

1