kernel: vhost-net: stack overflow in get_raw_socket while checking sk_family field

A stack buffer overflow issue was found in the getrawsocket routine of the Host kernel accelerator for virtio net vhost-net driver. It could occur while doing an ictolVHOSTNETSETBACKEND call, and retrieving socket name in a kernel stack variable via getrawsocket. A user able to perform ioctl2 cal...

A NULL pointer dereference flaw was found in the Linux kernel's SELinux subsystem in versions before 5.7. This flaw occurs while importing the Commercial IP Security Option (CIPSO) protocol's category bitmap into the SELinux extensible bitmap via the' ebitmap_netlbl_import' routine. While processing the CIPSO restricted bitmap tag in the 'cipso_v4_parsetag_rbm' routine it sets the security attribute to indicate that the category bitmap is present even if it has not been allocated. This issue leads to a NULL pointer dereference issue while importing the same category bitmap into SELinux. This flaw allows a remote network user to crash the system kernel resulting in a denial of service.

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A flaw was found in the way KVM hypervisor handled x2APIC Machine Specific Rregister (MSR) access with nested(=1) virtualization enabled. In that L1 guest could access L0's APIC register values via L2 guest when 'virtualize x2APIC mode' is enabled. A guest could use this flaw to potentially crash the host kernel resulting in DoS issue. Kernel versions from 4.16 and newer are vulnerable to this issue.

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UBUNTU-CVE-2020-25596

An issue was discovered in Xen through 4.14.x. x86 PV guest kernels can experience denial of service via SYSENTER. The SYSENTER instruction leaves various state sanitization activities to software. One of Xen's sanitization paths injects a GP fault, and incorrectly delivers it twice to the guest...

Kernel security update: Virtuozzo ReadyKernel patch 115.0 for Virtuozzo Hybrid Server 7.0, Virtuozzo Infrastructure Platform 2.5, 3.0, and Virtuozzo Hybrid Infrastructure 3.5

The cumulative Virtuozzo ReadyKernel patch was updated with security and stability fixes. The patch applies to all supported kernels of Virtuozzo Hybrid Server 7.0, Virtuozzo Infrastructure Platform, and Virtuozzo Hybrid Infrastructure. Vulnerability id: PSBM-107061 3.10.0-862.20.2.vz7.73.29 to...

CVE-2020-24385

In MidnightBSD before 1.2.6 and 1.3 before August 2020, and FreeBSD before 7, a NULL pointer dereference was found in the Linux emulation layer that allows attackers to crash the running kernel. During binary interaction, td-tdemuldata in sys/compat/linux/linuxemul.h is not getting initialized an...

CVE-2020-24385

In MidnightBSD before 1.2.6 and 1.3 before August 2020, and FreeBSD before 7, a NULL pointer dereference was found in the Linux emulation layer that allows attackers to crash the running kernel. During binary interaction, td-tdemuldata in sys/compat/linux/linuxemul.h is not getting initialized an...

Null pointer dereference

In MidnightBSD before 1.2.6 and 1.3 before August 2020, and FreeBSD before 7, a NULL pointer dereference was found in the Linux emulation layer that allows attackers to crash the running kernel. During binary interaction, td-tdemuldata in sys/compat/linux/linuxemul.h is not getting initialized an...

CVE-2020-24385

The CVE-2020-24385 issue affects MidnightBSD before 1.2.6 and 1.3 before August 2020, and FreeBSD before 7. It is a NULL pointer dereference in the Linux emulation layer. During binary interaction, td->td_emuldata in sys/compat/linux/linux_emul.h is not initialized and can return NULL from em_...

CVE-2020-4492

IBM Spectrum Scale V5.0.0.0 through V5.0.4.3 and V4.2.0.0 through V4.2.3.21 could allow a local attacker to cause a denial of service crashing the kernel by sending a subset of ioctls on the device with invalid arguments. IBM X-Force ID: 181992...

CVE-2020-15137

All versions of HoRNDIS are affected by an integer overflow in the RNDIS packet parsing routines. A malicious USB device can trigger disclosure of unrelated kernel memory to userspace applications on the host, or can cause the kernel to crash. Kernel memory disclosure is especially likely on 32-b...

CVE-2020-15137

All versions of HoRNDIS are affected by an integer overflow in the RNDIS packet parsing routines. A malicious USB device can trigger disclosure of unrelated kernel memory to userspace applications on the host, or can cause the kernel to crash. Kernel memory disclosure is especially likely on 32-b...

Integer overflow

All versions of HoRNDIS are affected by an integer overflow in the RNDIS packet parsing routines. A malicious USB device can trigger disclosure of unrelated kernel memory to userspace applications on the host, or can cause the kernel to crash. Kernel memory disclosure is especially likely on 32-b...

CVE-2020-15137

CVE-2020-15137 affects HoRNDIS — an integer overflow in HoRNDIS::receivePacket of the RNDIS packet parser. The vulnerability allows a malicious USB device to disclose kernel memory to userspace on the host (more likely on 32-bit kernels) or cause a kernel crash (more likely on 64-bit kernels) via...

Kernel update: Virtuozzo ReadyKernel patch 112.0 for Virtuozzo Hybrid Server 7.0, Virtuozzo Infrastructure Platform 2.5, 3.0, and Virtuozzo Hybrid Infrastructure 3.5

The cumulative Virtuozzo ReadyKernel patch was updated with a stability fix. The patch applies to all supported kernels of Virtuozzo Hybrid Server 7.0, Virtuozzo Infrastructure Platform, and Virtuozzo Hybrid Infrastructure. Vulnerability id: PSBM-98148 3.10.0-862.20.2.vz7.73.29 to...

CVE-2020-1653 Junos OS: Kernel crash (vmcore) or FPC crash due to mbuf leak

On Juniper Networks Junos OS devices, a stream of TCP packets sent to the Routing Engine RE may cause mbuf leak which can lead to Flexible PIC Concentrator FPC crash or the system to crash and restart vmcore. This issue can be trigged by IPv4 or IPv6 and it is caused only by TCP packets. This iss...

Security update for the Linux Kernel (important)

openSUSE Security Update: Security update for the Linux Kernel Announcement ID: openSUSE-SU-2020:0935-1 Rating: important References: 1058115 1065729 1071995 1085030 1148868 1152472 1152489 1153274 1154353 1154492 1155518 1155798 1156395 1157169 1158050 1158242 1158265 1158748 1158765 1159781...

Kernel security update: Virtuozzo ReadyKernel patch 109.0 for Virtuozzo Hybrid Server 7.0, Virtuozzo Infrastructure Platform 2.5, 3.0, and Virtuozzo Hybrid Infrastructure 3.5

The cumulative Virtuozzo ReadyKernel patch was updated with security and stability fixes. The patch applies to all supported kernels of Virtuozzo Hybrid Server 7.0, Virtuozzo Infrastructure Platform, and Virtuozzo Hybrid Infrastructure. Vulnerability id: CVE-2020-12114 3.10.0-862.20.2.vz7.73.24 t...

Exploit for Improper Restriction of Operations within the Bounds of a Memory Buffer in Microsoft

CVE-2020-0796 PoC aka CoronaBlue aka SMBGhost is a proof-of-concept exploit for a bug in Windows 10 1903/1909's new SMB3 compression capability. The bug is caused by a lack of bounds checking in the offset size of the SMB2CompressionTransformHeader, which can lead to a buffer overflow and crash t...

Apple macOS Catalina AppleUSBNetworking Component Denial of Service Vulnerability

Apple macOS Catalina is a proprietary operating system developed by Apple for Mac computers.AppleUSBNetworking is a USB Ethernet adapter. A security vulnerability exists in the AppleUSBNetworking component of Apple macOS Catalina versions prior to 10.15.5. An attacker could exploit the...