Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.18, < 6.18.27 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/3115fa2f62970d98f2a639145fb8e2767db8bbf9Patch
- https://git.kernel.org/stable/c/7701e68b5072faa03a8f30b4081dc16df9092381Patch
- https://git.kernel.org/stable/c/98623c7e2a51eab1833c8628d33fa9c6ef3ce325Patch
FAQ
What is CVE-2026-46045?
CVE-2026-46045 is a vulnerability with a CVSS score of 7.8 (HIGH). 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...
How severe is CVE-2026-46045?
CVE-2026-46045 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-46045?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.