UBUNTU-CVE-2026-98821

In the Linux kernel, the following vulnerability has been resolved: block: reject polled dio with user integrity metadata IOCBHASMETADATA leaves iocb-private as a uiometa, while iocbbioiopoll expects a bio. Since 2729a60bbfb9, metadata I/O always uses blkdevdirectIO, which never publishes the bio...

Linux block-core Heap Buffer Overflow DoS

The vulnerability of the biopoll function in the block/blk-core.c module, which supports the block-level kernel in the Linux operating system, is related to the pointer dereferencing due to poor synchronization. Exploiting this vulnerability can allow an attacker to cause a service failure...

CVE-2023-53366: NULL Pointer Dereference

In the Linux kernel, the following vulnerability has been resolved: block: be a bit more careful in checking for NULL bdev while polling Wei reports a crash with an application using polled IO: PGD 14265e067 P4D 14265e067 PUD 47ec50067 PMD 0 Oops: 0000 1 SMP CPU: 0 PID: 21915 Comm: iocore0 Kdump:...