kernel: vhost-net: guest to host kernel escape during migration

A buffer overflow flaw was found, in versions from 2.6.34 to 5.2.x, in the way Linux kernel's vhost functionality that translates virtqueue buffers to IOVs, logged the buffer descriptors during migration. A privileged guest user able to pass descriptors with invalid length to the host when migration is underway, could use this flaw to increase their privileges on the host.

Kernel: KVM: OOB memory access via mmio ring buffer

An out-of-bounds access issue was found in the Linux kernel, all versions through 5.3, in the way Linux kernel's KVM hypervisor implements the Coalesced MMIO write operation. It operates on an MMIO ring buffer 'struct kvm_coalesced_mmio' object, wherein write indices 'ring->first' and 'ring->last' value could be supplied by a host user-space process. An unprivileged host user or process with access to '/dev/kvm' device could use this flaw to crash the host kernel, resulting in a denial of service or potentially escalating privileges on the system.

ghostscript: Safer mode bypass by .forceput exposure in .pdfexectoken and other procedures (701450)

A flaw was found in, ghostscript versions prior to 9.50, in the .pdfexectoken and other procedures where it did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. A specially crafted PostScript file could disable security protection and then have access to the file system, or execute arbitrary commands.

kernel: heap overflow in mwifiex_update_vs_ie() function of Marvell WiFi driver

There is heap-based buffer overflow in kernel, all versions up to, excluding 5.3, in the marvell wifi chip driver in Linux kernel, that allows local users to cause a denial of service(system crash) or possibly execute arbitrary code.

kernel: heap overflow in mwifiex_set_uap_rates() function of Marvell Wifi Driver leading to DoS

There is heap-based buffer overflow in Linux kernel, all versions up to, excluding 5.3, in the marvell wifi chip driver in Linux kernel, that allows local users to cause a denial of service(system crash) or possibly execute arbitrary code.

ghostscript: Safer mode bypass by .forceput exposure in setsystemparams (701443)

A flaw was found in ghostscript, versions 9.x before 9.50, in the setsystemparams procedure where it did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. A specially crafted PostScript file could disable security protection and then have access to the file system, or execute arbitrary commands.

ghostscript: Safer mode bypass by .forceput exposure in .pdf_hook_DSC_Creator (701445)

A flaw was found in, ghostscript versions prior to 9.50, in the .pdf_hook_DSC_Creator procedure where it did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. A specially crafted PostScript file could disable security protection and then have access to the file system, or execute arbitrary commands.

golang: malformed hosts in URLs leads to authorization bypass

net/url in Go before 1.11.13 and 1.12.x before 1.12.8 mishandles malformed hosts in URLs, leading to an authorization bypass in some applications. This is related to a Host field with a suffix appearing in neither Hostname() nor Port(), and is related to a non-numeric port number. For example, an attacker can compose a crafted javascript:// URL that results in a hostname of google.com.

kdelibs: malicious desktop files and configuration files lead to code execution with minimal user interaction

In KDE Frameworks KConfig before 5.61.0, malicious desktop files and configuration files lead to code execution with minimal user interaction. This relates to libKF5ConfigCore.so, and the mishandling of .desktop and .directory files, as demonstrated by a shell command on an Icon line in a .desktop file.

edk2: double-unmap issue in SdMmcCreateTrb function in MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdMmcPciHci.c

Logic issue EDK II may allow an unauthenticated user to potentially enable denial of service via adjacent access.

edk2: potential use-after-free due to the original configuration runtime memory is freed but it is still exposed to the OS runtime

Use after free vulnerability in EDK II may allow an authenticated user to potentially enable escalation of privilege, information disclosure and/or denial of service via adjacent access.

edk2: DxeImageVerificationHandler() fails open in case of dbx signature check

Logic issue in DxeImageVerificationHandler() for EDK II may allow an authenticated user to potentially enable escalation of privilege via local access.

edk2: numeric truncation in MdeModulePkg/PiDxeS3BootScriptLib

Integer truncation in EDK II may allow an authenticated user to potentially enable escalation of privilege via local access.

edk2: DxeImageVerificationHandler integer overflow leads to endless loop

Integer overflow in DxeImageVerificationHandler() EDK II may allow an authenticated user to potentially enable denial of service via local access.

edk2: potentially leaking of secret information due to uncleared memory

Insufficient control flow management in BIOS firmware for 8th, 9th, 10th Generation Intel(R) Core(TM), Intel(R) Celeron(R) Processor 4000 & 5000 Series Processors may allow an authenticated user to potentially enable denial of service via adjacent access.

dnsmasq: Improper bounds checking leads to a buffer overread

Improper bounds checking in Dnsmasq before 2.76 allows an attacker controlled DNS server to send large DNS packets that result in a read operation beyond the buffer allocated for the packet, a different vulnerability than CVE-2017-14491.

ModuleEditor::convertInstrument in tracker/ModuleEditor.cpp in MilkyTracker 1.02.00 has a heap-based buffer overflow.

LoaderXM::load in LoaderXM.cpp in milkyplay in MilkyTracker 1.02.00 has a stack-based buffer overflow.

poppler: divide-by-zero in function SplashOutputDev::tilingPatternFill in SplashOutputDev.cc

An issue was discovered in Poppler through 0.78.0. There is a divide-by-zero error in the function SplashOutputDev::tilingPatternFill at SplashOutputDev.cc.

opencv: NULL pointer dereference in function cv::XMLParser::parse() in persistence_xml.cpp leading to DoS

An issue was discovered in OpenCV before 4.1.1. There is a NULL pointer dereference in the function cv::XMLParser::parse at modules/core/src/persistence.cpp.