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Unrated severityNVD Advisory· Published Feb 26, 2025· Updated May 4, 2025

dm mirror log: round up region bitmap size to BITS_PER_LONG

CVE-2022-49710

Description

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

dm mirror log: round up region bitmap size to BITS_PER_LONG

The code in dm-log rounds up bitset_size to 32 bits. It then uses find_next_zero_bit_le on the allocated region. find_next_zero_bit_le accesses the bitmap using unsigned long pointers. So, on 64-bit architectures, it may access 4 bytes beyond the allocated size.

Fix this bug by rounding up bitset_size to BITS_PER_LONG.

This bug was found by running the lvm2 testsuite with kasan.

Affected products

136

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

5

News mentions

0

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