UBUNTU-CVE-2026-89574

In the Linux kernel, the following vulnerability has been resolved: dm array: validate array block headers on read arrayblockcheck validates blocknr and csum and nothing else, while nodecheck, next to it, has bounded the structural fields since both were written. dmarraycursornext takes its loop...

CVE-2026-89574

CVE-2026-89574 is a vulnerability in the Linux kernel's device mapper (dm) array component. The root cause is insufficient validation of array block headers during read operations: array_block_check() only verifies blocknr and csum, while element_at() performs unguarded pointer arithmetic driven ...