BlackCat Ransomware Deploys New Signed Kernel Driver

In this blog post, we will provide details on a BlackCat ransomware incident that occurred in February 2023, where we observed a new capability, mainly used for the defense evasion phase...

Ubuntu 22.04 LTS : Linux kernel (OEM) vulnerability (USN-6089-1)

The remote Ubuntu 22.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-6089-1 advisory. It was discovered that the Intel i915 graphics driver in the Linux kernel did not perform a GPU TLB flush in some situations. A local attacker could use this to...

kernel: iommu/vt-d: Clean up si_domain in the init_dmars() error path

A memory leak flaw was found in the Linux kernel's Intel VT-d IOMMU driver in the initialization error path. A local user can trigger this issue when the initdmars function fails during IOMMU setup, causing the sidomain memory to remain allocated without being freed. This results in a permanent...

CVE-2022-42465

Improper access control in kernel mode driver for the IntelR OFU software before version 14.1.30 may allow a privileged user to potentially enable escalation of privilege via local access...

CVE-2022-42465

Improper access control in kernel mode driver for the IntelR OFU software before version 14.1.30 may allow a privileged user to potentially enable escalation of privilege via local access...

CVE-2022-41784

Improper access control in kernel mode driver for the IntelR OFU software before version 14.1.30 may allow an authenticated user to potentially enable escalation of privilege via local access...

CVE-2022-41784

Intel OFU software prior to version 14.1.30 is affected by CVE-2022-41784 due to improper access control in the kernel-mode driver, potentially enabling local privilege escalation by an authenticated user. The advisory lists a high-severity impact (CVSS v3.1: 8.8, LOCAL, Privileges Required: Low)...

Google Android Input Validation Error Vulnerability (CNVD-2023-43881)

Google Android is a Linux-based open source operating system from Google. Google Android suffers from an input validation error vulnerability that originates in the PowerVRSRVBridgePhysmemImportSparseDmaBuf component of the PowerVR kernel driver component where the lack of size checking means tha...

Google Android elevation of privilege vulnerability (CNVD-2023-50311)

Google Android is a Linux-based open source operating system from Google. Google Android suffers from an elevation of privilege vulnerability due to an integer overflow in the PowerVRSRVBridgeRGXKickSync of the PowerVR kernel driver, which can be exploited by an attacker to escalate privileges...

Google Android elevation of privilege vulnerability (CNVD-2023-50309)

Google Android is a Linux-based open source operating system from Google. Google Android suffers from an elevation of privilege vulnerability due to an integer overflow in the PVRSRVBridgeCacheOpQueue of the PowerVR kernel driver, which can be exploited by an attacker to escalate privileges...

Google Android elevation of privilege vulnerability (CNVD-2023-50310)

Google Android is a Linux-based open source operating system from Google. Google Android suffers from an elevation of privilege vulnerability due to an integer overflow in the PowerVRSRVBridgeRGXKickCDM of the PowerVR kernel driver, which can be exploited by an attacker to escalate privileges...

kernel: rtw89: ser: fix CAM leaks occurring in L2 reset

In the Linux kernel, the following vulnerability has been resolved: rtw89: ser: fix CAM leaks occurring in L2 reset The CAM, meaning address CAM and bssid CAM here, will get leaks during SER system error recover L2 reset process and ieee80211restarthw which is called by L2 reset process eventuall...

Google Android Input Validation Error Vulnerability (CNVD-2023-43882)

Google Android is a Linux-based open source operating system from Google. Google Android suffers from an input validation error vulnerability that stems from a lack of size checking in the PowerVRSRVBridgeSyncPrimOpTake of the PowerVR kernel driver component means that there could be an integer...

VulnCheck KEV: CVE-2018-5713

In Malwarefox Anti-Malware 2.72.169, the driver file zam64.sys allows local users to cause a denial of service BSOD or possibly have unspecified other impact because of not validating input values from IOCtl 0x80002010...

CVE-2021-0881

In PVRSRVBridgeRGXKickCDM of the PowerVR kernel driver, a missing size check means there is a possible integer overflow that could allow out-of-bounds heap access. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for...

CVE-2021-0874

In PVRSRVBridgeDevicememHistorySparseChange of the PowerVR kernel driver, a missing size check means there is a possible integer overflow that could allow out-of-bounds heap access. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction i...

CVE-2021-0873

In PVRSRVBridgeRGXKickRS of the PowerVR kernel driver, a missing size check means there is a possible integer overflow that could allow out-of-bounds heap access. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for...

Integer overflow

In PVRSRVBridgeChangeSparseMem of the PowerVR kernel driver, a missing size check means there is a possible integer overflow that could allow out-of-bounds heap access. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed...

Integer overflow

In PVRSRVBridgeRGXKickVRDM of the PowerVR kernel driver, a missing size check means there is a possible integer overflow that could allow out-of-bounds heap access. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for...

Integer overflow

In PVRSRVBridgeRGXKickSync of the PowerVR kernel driver, a missing size check means there is a possible integer overflow that could allow out-of-bounds heap access. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for...