Copyright © 2012 Red Hat, Inc. All rights reserved. Moderate 2026-05-27T00:00:00 kernel: md/md-llbitmap: skip reading rdevs that are not in_sync 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CWE-821

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

A flaw was found in the Linux kernel, specifically within the multiple device (MD) driver's bitmap handling. This vulnerability allows the system to read outdated or incomplete data from storage devices that are not fully synchronized. This can lead to errors in tracking changes to data, which may result in data corruption during system recovery or regular operations.

Red Hat Enterprise Linux 10 Not affected kernel Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel-rt Red Hat Enterprise Linux 8 Not affected kernel Red Hat Enterprise Linux 8 Not affected kernel-rt Red Hat Enterprise Linux 9 Affected kernel Red Hat Enterprise Linux 9 Affected kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-46045 https://nvd.nist.gov/vuln/detail/CVE-2026-46045 https://lore.kernel.org/linux-cve-announce/2026052752-CVE-2026-46045-ce33@gregkh/T