PT-2022-7369 · Qemu +11 · Qemu +11

Name of the Vulnerable Software and Affected Versions: QEMU versions prior to 7.0.0 Description: A DMA reentrancy issue was found in the USB EHCI controller emulation of QEMU. EHCI does not verify if the Buffer Pointer overlaps with its MMIO region when it transfers the USB packets. Crafted conte...

An issue was discovered in ide_dma_cb() in hw/ide/core.c in QEMU 2.4.0 through 4.2.0. The guest system can crash the QEMU process in the host system via a special SCSI_IOCTL_SEND_COMMAND. It hits an assertion that implies that the size of successful DMA transfers there must be a multiple of 512 (the size of a sector). NOTE: a member of the QEMU security team disputes the significance of this issue because a "privileged guest user has many ways to cause similar DoS effect without triggering this assert.

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openSUSE Security Update : MozillaFirefox (openSUSE-2020-1189)

This update for MozillaFirefox fixes the following issues : This update for MozillaFirefox and pipewire fixes the following issues : MozillaFirefox Extended Support Release 78.1.0 ESR - Fixed: Various stability, functionality, and security fixes bsc1174538 - CVE-2020-15652: Potential leak of...

Intel® Thunderbolt™ Controller Advisory

Summary: A potential security vulnerability in some Intel® Thunderbolt™ controllers may allow information disclosure. Intel is releasing prescriptive guidance to mitigate this potential vulnerability. Vulnerability Details: CVEID: CVE-2019-14630 Description: Reliance on untrusted inputs in a...

Denial Of Service (DoS)

Xen is vulnerable to denial of service DoS. It is allowing x86 Intel HVM guest OS users to cause a host OS denial of service or possibly gain privileges because of insufficient cache write-back under VT-d. When page tables are shared between IOMMU and CPU, changes to them require flushing of both...

kernel security, bug fix, and enhancement update

4.18.0-193.13.22.OL8 - Oracle Linux certificates Alexey Petrenko - Oracle Linux RHCK Module Signing Key was added to the kernel trusted keys list olkmodsigningkey.pem Orabug: 29539237 - Update x509.genkey Orabug: 24817676 4.18.0-193.13.22 - Rebuild to get kernel image properly signed Bruno...

Xen Insufficient Cache Write-Back (XSA-321)

According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by a denial of service and potential privilege escalation due to an insufficient cache write-back under VT-d. A malicious guest may be able to retain read/write DMA access to frames returned...

The vulnerability in the `hw/rdma/rdma_backend.c` component of the PVRDMA virtual network adapter emulator for hardware infrastructure, QEMU, allows a hacker to trigger a service failure.

The vulnerability in the hw/rdma/rdmabackend.c component of the PVRDMA virtual network adapter, within the QEMU hardware emulation software, is related to the execution of operations outside the buffer boundaries. Exploiting this vulnerability could allow an attacker to trigger a service failure...

CVE-2020-15565

An issue was discovered in Xen through 4.13.x, allowing x86 Intel HVM guest OS users to cause a host OS denial of service or possibly gain privileges because of insufficient cache write-back under VT-d. When page tables are shared between IOMMU and CPU, changes to them require flushing of both...

CVE-2020-15565

Root cause: CVE-2020-15565 arises from insufficient cache write-back under VT-d when page tables are shared between IOMMU and CPU, requiring flushing of both CPU and IOMMU TLBs. A backport/backing fixes missed a necessary cache flush, leaving IOMMU updates potentially non-coherent. Affected produ...

CVE-2020-15565

An issue was discovered in Xen through 4.13.x, allowing x86 Intel HVM guest OS users to cause a host OS denial of service or possibly gain privileges because of insufficient cache write-back under VT-d. When page tables are shared between IOMMU and CPU, changes to them require flushing of both...

insufficient cache write-back under VT-d

ISSUE DESCRIPTION When page tables are shared between IOMMU and CPU, changes to them require flushing of both TLBs. Furthermore, IOMMUs may be non-coherent, and hence prior to flushing IOMMU TLBs CPU cached also needs writing back to memory after changes were made. Such writing back of cached dat...

SUSE SLES12 Security Update : xen (SUSE-SU-2020:1630-1)

This update for xen fixes the following issues : CVE-2020-0543: Fixed a side channel attack against special registers which could have resulted in leaking of read values to cores other than the one which called it. This attack is known as Special Register Buffer Data Sampling SRBDS or 'CrossTalk'...

Design/Logic Flaw

Function abcpcieissuedmaxfersync creates a transfer object, adds it to the session object then continues to work with it. A concurrent thread could retrieve created transfer object from the session object and delete it using abcpciedmauserxferclean. If this happens, abcpciestartdmaxfer and...

Intel Thunderbolt Vulnerabilities - Lenovo Support US

No description provided...

Intel Thunderbolt Vulnerabilities - Lenovo Support US

Lenovo Security Advisory: LEN-31390 Potential Impact: Information disclosure, privilege escalation Severity: High Scope of Impact: Industry-wide CVE Identifier: CVE-2019-14630 Summary Description: Intel reported potential security vulnerabilities, requiring physical access and dedicated equipment...

ThunderSpy

A combination of vulnerabilities for the Thunderbolt protocol have been announced that allow a malicious actor to access most machines with a Thunderbolt port and bypass security restrictions on the device. Recent assessments: agalauner-r7 at May 11, 2020 4:37pm UTC reported: The risks of DMA...

Secured-core PCs help customers stay ahead of advanced data theft

Researchers at the Eindhoven University of Technology recently revealed information around "Thunderspy," an attack that relies on leveraging direct memory access DMA functionality to compromise devices. An attacker with physical access to a system can use Thunderspy to read and copy data even fro...

7 New Flaws Affect All Thunderbolt-equipped Computers Sold in the Last 9 Years

A cybersecurity researcher today uncovers a set of 7 new unpatchable hardware vulnerabilities that affect all desktops and laptops sold in the past 9 years with Thunderbolt, or Thunderbolt-compatible USB-C ports. Collectively dubbed 'ThunderSpy,' the vulnerabilities can be exploited in 9 realisti...

SAS@Home Virtual Summit Showcases New Threat Intel, Industry Changes

As the COVID-19 pandemic continues to force in-person cybersecurity event cancellations, Kaspersky is forging ahead with a virtual security summit, SAS@home. Topics on the agenda include threat intel on advanced persistent threats APTs, new vulnerability research, and topics related to a...