CVE-2026-89742

A flaw was found in the Linux kernel. A local user could exploit a use-after-free vulnerability in the dmareqfree function within the RapidIO mport character device interface. This flaw occurs when the dmareqfree function attempts to dereference a freed object after dropping the last reference to...

CVE-2026-89742

In the Linux kernel, the following vulnerability has been resolved: rapidio: mportcdev: fix use-after-free in dmareqfree dmareqfree acquires bufmutex through req-map, drops the mapping reference with krefput, and then dereferences req-map again to unlock the mutex. If krefput drops the last...

CVE-2026-89742

CVE-2026-89742 is a use-after-free in the Linux kernel 's RapidIO mport character device driver (mport_cdev). In dma_req_free(), the function acquires buf_mutex via req->map, calls kref_put() which may drop the last reference and free the mapping via mport_release_mapping(), and then dereferen...

EUVD-2026-76654

In the Linux kernel, the following vulnerability has been resolved: rapidio: mportcdev: fix use-after-free in dmareqfree dmareqfree acquires bufmutex through req-map, drops the mapping reference with krefput, and then dereferences req-map again to unlock the mutex. If krefput drops the last...