CVE-2021-46950: Linux Kernel

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: md/raid1: properly indicate failure when ending a failed write request This patch addresses a data corruption bug in raid1 arrays using bitmaps. Without this fix, the bitmap bits for the failed I/O end up being cleared. Since we are in the failure leg of raid1_end_write_request, the request either needs to be retried (R1BIO_WriteError) or failed (R1BIO_Degraded).

Affected products

• Linux Linux Kernel: from 4.14.147, before 4.14.233 (fixed in 4.14.233); from 4.19.77, before 4.19.191 (fixed in 4.19.191); from 5.2.19, before 5.3 (fixed in 5.3); from 5.3.4, before 5.4.118 (fixed in 5.4.118); from 5.5, before 5.10.36 (fixed in 5.10.36); from 5.11, before 5.11.20 (fixed in 5.11.20); …

Published 2024-02-27. Last modified 2026-06-17.