Xen in the Linux kernel when running a guest on a host without hardware assisted paging (HAP) allows guest users to cause a denial of service (invalid pointer dereference and hypervisor crash) via the SAHF instruction.

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Xen PCI Passthrough Code Reading Back Hardware Registers DoS (XSA-337)

According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by a denial of service DoS vulnerability. Code paths in Xen's MSI handling have been identified which act on unsanitized values read back from device hardware registers. While devices strict...

Denial Of Service (DoS)

xen is vulnerable to denial of service DoS. The vulnerability exists as the PCI passthrough code improperly uses register data, causing code paths in Xen's MSI handling to act on unsanitized values read back from device hardware registers...

ALPINE-CVE-2020-25598

An issue was discovered in Xen 4.14.x. There is a missing unlock in the XENMEMacquireresource error path. The RCU Read, Copy, Update mechanism is a synchronisation primitive. A buggy error path in the XENMEMacquireresource exits without releasing an RCU reference, which is conceptually similar to...

CVE-2020-25601

An issue was discovered in Xen through 4.14.x. There is a lack of preemption in evtchnreset / evtchndestroy. In particular, the FIFO event channel model allows guests to have a large number of event channels active at a time. Closing all of these when resetting all event channels or when cleaning...

DEBIAN-CVE-2020-25595

An issue was discovered in Xen through 4.14.x. The PCI passthrough code improperly uses register data. Code paths in Xen's MSI handling have been identified that act on unsanitized values read back from device hardware registers. While devices strictly compliant with PCI specifications shouldn't ...

CVE-2020-25601

An issue was discovered in Xen through 4.14.x. There is a lack of preemption in evtchnreset / evtchndestroy. In particular, the FIFO event channel model allows guests to have a large number of event channels active at a time. Closing all of these when resetting all event channels or when cleaning...

Google Android Information Disclosure Vulnerability (CNVD-2020-53766)

Android is a Linux-based open source operating system from Google and the Open Handheld Alliance OHA. Android version 11 SoundTriggerHwService has a security vulnerability that can be exploited by attackers to obtain sensitive information...

PCI passthrough code reading back hardware registers

ISSUE DESCRIPTION Code paths in Xen's MSI handling have been identified which act on unsanitized values read back from device hardware registers. While devices strictly compliant with PCI specifications shouldn't be able to affect these registers, experience shows that it's very common for device...

Denial Of Service (DoS)

qemu is vulnerable to denial of service DoS. The vulenrability exists through an out-of-bounds read during the sdchiwrite operation in sdwpaddr of hw/sd/sd.c...

CVE-2020-0356

In the Audio HAL, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-143787559...

Design/Logic Flaw

In various functions in fscryptice.c and related files in some implementations of f2fs encryption that use encryption hardware which only supports 32-bit IVs Initialization Vectors, 64-bit IVs are used and later are truncated to 32 bits. This may cause IV reuse and thus weakened disk encryption...

FreeBSD : FreeBSD -- bhyve privilege escalation via VMCS access (2c5b9cd7-f7e6-11ea-88f8-901b0ef719ab)

AMD and Intel CPUs support hardware virtualization using specialized data structures that control various aspects of guest operation. These are the Virtual Machine Control Structure VMCS on Intel CPUs, and the Virtual Machine Control Block VMCB on AMD CPUs. Insufficient access controls allow root...

[SECURITY] Fedora 32 Update: grub2-2.04-22.fc32

The GRand Unified Bootloader GRUB is a highly configurable and customizable bootloader with modular architecture. It supports a rich variety of kernel formats, file systems, computer architectures and hardware devices...

F5 Networks BIG-IP : BIG-IP SSL/TLS ADH/DHE vulnerability (K91158923)

BIG-IP platforms with Cavium Nitrox SSL hardware acceleration cards, a virtual server configured with a Client SSL profile, and using AnonymousDiffie-Hellman ADH or Ephemeral Diffie-HellmanDHE key exchange and Single DH use option not enabled in the options list may be vulnerable to crafted...

Programmer Hacks Pregnancy Test to Play Doom

By Waqas A hardware and software reverse engineer managed to run Doom's fully functional game on a pregnancy test. This is a post from HackRead.com Read the original post: Programmer Hacks Pregnancy Test to Play Doom...

zlib bug fix and enhancement update

The zlib packages provide a general-purpose lossless data compression library that is used by many different programs. Bug Fixes and Enhancements: AlmaLinux8.2 - zlib on s390x may produce incomplete raw but not gzip/zlib streams BZ1860952 AlmaLinux8.2 - raw zlib test failed with DFLTCCLEVELMASK s...

JITSploitation III: Subverting Control Flow

Posted by Samuel Groß, Project Zero This three-part series highlights the technical challenges involved in finding and exploiting JavaScript engine vulnerabilities in modern web browsers and evaluates current exploit mitigation technologies. The exploited vulnerability, CVE-2020-9802, was fixed i...

ASB-A-153450752

In various functions in fscryptice.c and related files in some implementations of f2fs encryption that use encryption hardware which only supports 32-bit IVs Initialization Vectors, 64-bit IVs are used and later are truncated to 32 bits. This may cause IV reuse and thus weakened disk encryption...

CVE-2020-25056

An issue was discovered on Samsung mobile devices with Q10.0 Galaxy S20 software. Because HAL improperly checks versions, bootloading by the S.LSI NFC chipset is mishandled. The Samsung ID is SVE-2020-16169 August 2020...