kernel: hwrng: virtio: clamp device-reported used.len at copy_data()

A flaw was found in the Linux kernel's virtio-rng driver. A malicious or buggy virtualized hardware random number generator virtio-rng backend can report an overly large data length to the guest operating system. This unchecked length can lead to an out-of-bounds read, causing the driver to acces...

Astra Linux – Vulnerability in Linux 5.10, Linux, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: hwrng: virtio – Fixed a race condition related to dataavail and actual data. The virtio rng device initiates a new entropy request whenever the data available becomes zero. When a new request occurs at the end of a read...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098904)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098904 advisory. In the Linux kernel, the following vulnerability has been resolved: hwrng: virtio: clamp device-reported used.len at copydata randomrecvdone stores the device-report...

CVE-2026-64456

A flaw was found in the Linux kernel's virtio-rng driver. A malicious or buggy virtualized hardware random number generator virtio-rng backend can report an overly large data length to the guest operating system. This unchecked length can lead to an out-of-bounds read, causing the driver to acces...

SUSE CVE-2026-64456

In the Linux kernel, the following vulnerability has been resolved: hwrng: virtio: clamp device-reported used.len at copydata randomrecvdone stores the device-reported used.len directly into vi-dataavail. copydata then indexes vi-data using vi-dataidx advanced by previous copydata calls and issue...

CVE-2026-64456

In the Linux kernel, the following vulnerability has been resolved: hwrng: virtio: clamp device-reported used.len at copydata randomrecvdone stores the device-reported used.len directly into vi-dataavail. copydata then indexes vi-data using vi-dataidx advanced by previous copydata calls and issue...

AZL-93866 CVE-2026-64456 affecting package kernel for versions less than 6.6.145.2-1

In the Linux kernel, the following vulnerability has been resolved: hwrng: virtio: clamp device-reported used.len at copydata randomrecvdone stores the device-reported used.len directly into vi-dataavail. copydata then indexes vi-data using vi-dataidx advanced by previous copydata calls and issue...

UBUNTU-CVE-2026-64456

In the Linux kernel, the following vulnerability has been resolved: hwrng: virtio: clamp device-reported used.len at copydata randomrecvdone stores the device-reported used.len directly into vi-dataavail. copydata then indexes vi-data using vi-dataidx advanced by previous copydata calls and issue...

PT-2026-64677

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 7.1-rc4 Description An out-of-bounds read issue exists in the virtio-rng driver. The random recv done function stores a device-reported used.len value into vi-data avail without validation. Subsequently, the copy...

CVE-2026-64456: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: hwrng: virtio: clamp device-reported used.len at copydata randomrecvdone stores the device-reported used.len directly into vi-dataavail. copydata then indexes vi-data using vi-dataidx advanced by previous copydata calls and issue...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-013171)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013171 advisory. In the Linux kernel, the following vulnerability has been resolved: hwrng: virtio - Fix race on dataavail and actual data The virtio rng device kicks off a new entro...

CVE-2023-53998

In the Linux kernel, the following vulnerability has been resolved: hwrng: virtio - Fix race on dataavail and actual data The virtio rng device kicks off a new entropy request whenever the data available reaches zero. When a new request occurs at the end of a read operation, that is, when the...

SUSE CVE-2023-53998

In the Linux kernel, the following vulnerability has been resolved: hwrng: virtio - Fix race on dataavail and actual data The virtio rng device kicks off a new entropy request whenever the data available reaches zero. When a new request occurs at the end of a read operation, that is, when the...

Linux Distros Unpatched Vulnerability : CVE-2023-53998

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - hwrng: virtio - Fix race on dataavail and actual data The virtio rng device kicks off a new entropy request whenever the data available reaches zero. When a new...

CVE-2023-53998

In the Linux kernel, the following vulnerability has been resolved: hwrng: virtio - Fix race on dataavail and actual data The virtio rng device kicks off a new entropy request whenever the data available reaches zero. When a new request occurs at the end of a read operation, that is, when the...

CVE-2023-53998 hwrng: virtio - Fix race on data_avail and actual data

In the Linux kernel, the following vulnerability has been resolved: hwrng: virtio - Fix race on dataavail and actual data The virtio rng device kicks off a new entropy request whenever the data available reaches zero. When a new request occurs at the end of a read operation, that is, when the...

PT-2025-52955

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists in the virtio random number generator rng device when handling entropy requests and data availability. Specifically, the issue occurs when a new request is...

SUSE CVE-2013-2016

A flaw was found in the way qemu v1.3.0 and later virtio-rng validates addresses when guest accesses the config space of a virtio device. If the virtio device has zero/small sized config space, such as virtio-rng, a privileged guest user could use this flaw to access the matching host's qemu...

Design/Logic Flaw

A flaw was found in the way qemu v1.3.0 and later virtio-rng validates addresses when guest accesses the config space of a virtio device. If the virtio device has zero/small sized config space, such as virtio-rng, a privileged guest user could use this flaw to access the matching host's qemu...

CVE-2013-2016

CVE-2013-2016 affects qemu v1.3.0 and later (virtio-rng). The issue arises from how addresses are validated when a guest accesses the config space of a virtio device; when the device has a very small or zero-sized config space, a privileged guest could access the host’s qemu address space and pot...