EUVD-2026-81779

In the Linux kernel, the following vulnerability has been resolved: nullblk: reject per-device queue resize for shared tag set When sharedtags is enabled, nullsetuptagset makes the device use the global tagset, whose driverdata stays NULL. nullmapqueues therefore falls back to the module-wide...

CVE-2026-90186

CVE-2026-90186 affects the Linux kernel null_blk driver. When the module is loaded with shared_tags enabled, a per-device resize of submit_queues or poll_queues via configfs calls blk_mq_update_nr_hw_queues() on the shared tag set, shrinking hardware queue contexts. The resulting NULL hardware co...