CVE-2026-31463

A flaw was found in the Linux kernel's iomap subsystem. This vulnerability occurs when the block size of an inode (i_blkbits) differs from the granularity used for input/output (I/O) operations. This mismatch can lead to invalid access of data pages (folios) during read operations, potentially causing data corruption or system instability. The issue arises because the system may attempt to finalize a read operation on a folio that is still actively being processed by the I/O helper.