CVE-2022-49710

MEDIUM

Linux Kernel 2.6.18-5.18.5 - Memory Corruption via dm-log Region Bitmap Size Miscount

Title source: llm
STIX 2.1

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.

References (5)

Core 5

Scores

CVSS v3 5.5
EPSS 0.0028
EPSS Percentile 20.3%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

Status published
Products (18)
linux/Kernel 2.6.18 - 5.4.200linux
linux/Kernel 5.11.0 - 5.15.49linux
linux/Kernel 5.16.0 - 5.18.6linux
linux/Kernel 5.5.0 - 5.10.124linux
Linux/Linux < 2.6.18
Linux/Linux 2.6.18
Linux/Linux 29121bd0b00ebb9524971a583fea4a2f7afe8041 - 0d2209b54f1de0c2f99cab246d4cf2cfe24aaaa9
Linux/Linux 29121bd0b00ebb9524971a583fea4a2f7afe8041 - 85e123c27d5cbc22cfdc01de1e2ca1d9003a02d0
Linux/Linux 29121bd0b00ebb9524971a583fea4a2f7afe8041 - 9a02f3275acc628c0d956be771405ced79ac36df
Linux/Linux 29121bd0b00ebb9524971a583fea4a2f7afe8041 - ae460312875159285cef5bf3dc654593f404a1ef
... and 8 more
Published Feb 26, 2025
Tracked Since Feb 18, 2026