Linux kernel security vulnerabilities

The Linux kernel contains a security vulnerability stemming from a failure to validate the return value of importubuf. When the address range provided by the user-space ublk server exceeds permitted user addresses, importubuf may fail. As a result, an uninitialized struct ioviter is passed to...

SUSE CVE-2026-53124

In the Linux kernel, the following vulnerability has been resolved: ublk: reset per-IO canceled flag on each fetch If a ublk server starts recovering devices but dies before issuing fetch commands for all IOs, cancellation of the fetch commands that were successfully issued may never complete. Th...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: ublk: Clean up user copy references on the ublk server exit. If a ublk server process releases a ublk character device file, any requests dispatched to the ublk server but not yet completed will retain a reference value of...

CVE-2025-71070

A reference count leak flaw was found in the Linux kernel's ublk userspace block driver subsystem. When a ublk server process exits while requests are still pending, the reference counts for those requests are not properly decremented. This leads to WARNONONCE warnings and could potentially allow...

SUSE CVE-2025-71070

In the Linux kernel, the following vulnerability has been resolved: ublk: clean up user copy references on ublk server exit If a ublk server process releases a ublk char device file, any requests dispatched to the ublk server but not yet completed will retain a ref value of UBLKREFCOUNTINIT. Befo...

CVE-2025-71070

In the Linux kernel, the following vulnerability has been resolved: ublk: clean up user copy references on ublk server exit If a ublk server process releases a ublk char device file, any requests dispatched to the ublk server but not yet completed will retain a ref value of UBLKREFCOUNTINIT. Befo...

CVE-2025-71070 ublk: clean up user copy references on ublk server exit

In the Linux kernel, the following vulnerability has been resolved: ublk: clean up user copy references on ublk server exit If a ublk server process releases a ublk char device file, any requests dispatched to the ublk server but not yet completed will retain a ref value of UBLKREFCOUNTINIT. Befo...

Linux Kernel Security Vulnerabilities

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from a failure to clean up user copy references when the ublk server exits, which could lead to reuse after relea...