UBUNTU-CVE-2026-43442

In the Linux kernel, the following vulnerability has been resolved: iouring: fix physical SQE bounds check for SQEMIXED 128-byte ops When IORINGSETUPSQEMIXED is used without IORINGSETUPNOSQARRAY, the boundary check for 128-byte SQE operations in ioinitreq validated the logical SQ head position...

CVE-2026-43442

The CVE-2026-43442 issue affects the Linux kernel io_uring subsystem: when IORING_SETUP_SQE_MIXED is used without IORING_SETUP_NO_SQARRAY, a flawed 128-byte SQE bounds check validates the logical SQ head instead of the physical SQE index. This can let an unprivileged local user remap a logical po...