CVE-2022-49710

MediumCVSS 5.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected software

VendorProductVersions
LinuxLinux>= 29121bd0b00ebb9524971a583fea4a2f7afe8041, < ae460312875159285cef5bf3dc654593f404a1ef; >= 29121bd0b00ebb9524971a583fea4a2f7afe8041, < ba751f0d25f07aa21ce9b85372a3792bf7969d13; >= 29121bd0b00ebb9524971a583fea4a2f7afe8041, < 0d2209b54f1de0c2f99cab246d4cf2cfe24aaaa9; >= 29121bd0b00ebb9524971a583fea4a2f7afe8041, < 9a02f3275acc628c0d956be771405ced79ac36df; >= 29121bd0b00ebb9524971a583fea4a2f7afe8041, < 85e123c27d5cbc22cfdc01de1e2ca1d9003a02d0
LinuxLinux2.6.18

References

Timeline

Published
Feb 26, 2025
Last modified
Jun 17, 2026
NVD status
Analyzed

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CVE-2022-49710: Medium severity, CVSS 5.5 | Vulnix