CVE-2026-46045

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> md/md-llbitmap: skip reading rdevs that are not in_sync<br /> <br /> When reading bitmap pages from member disks, the code iterates through<br /> all rdevs and attempts to read from the first available one. However,<br /> it only checks for raid_disk assignment and Faulty flag, missing the<br /> In_sync flag check.<br /> <br /> This can cause bitmap data to be read from spare disks that are still<br /> being rebuilt and don&amp;#39;t have valid bitmap information yet. Reading<br /> stale or uninitialized bitmap data from such disks can lead to<br /> incorrect dirty bit tracking, potentially causing data corruption<br /> during recovery or normal operation.<br /> <br /> Add the In_sync flag check to ensure bitmap pages are only read from<br /> fully synchronized member disks that have valid bitmap data.