CVE-2022-49710
Medium
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.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Linux Kernel
PublishedFeb 26, 2025
First seenFeb 26, 2025
How to fix
Update
- linux linux_kernel5.4.200, 5.10.124, 5.15.49, 5.18.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 2.6.18 ≤ v < 5.4.200, 5.5 ≤ v < 5.10.124, 5.11 ≤ v < 5.15.49, 5.16 ≤ v < 5.18.6, 5.19 | 5.4.200, 5.10.124, 5.15.49, 5.18.6 |
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