CVE-2020-1686 Junos OS: Kernel crash (vmcore) upon receipt of a malformed IPv6 packet.

On Juniper Networks Junos OS devices, receipt of a malformed IPv6 packet may cause the system to crash and restart vmcore. This issue can be trigged by a malformed IPv6 packet destined to the Routing Engine. An attacker can repeatedly send the offending packet resulting in an extended Denial of...

CVE-2020-1683 Junos OS: Memory leak leads to kernel crash (vmcore) due to SNMP polling

On Juniper Networks Junos OS devices, a specific SNMP OID poll causes a memory leak which over time leads to a kernel crash vmcore. Prior to the kernel crash other processes might be impacted, such as failure to establish SSH connection to the device. The administrator can monitor the output of t...

CVE-2020-1683

CVE-2020-1683 is a memory-leak DoS issue in Juniper Networks Junos OS triggered by a specific SNMP OID poll, leading to a kernel crash (vmcore). Affected Junos OS versions include 17.4R3; 18.1R3-S5 and later to 18.1R3-S10 (excluded), 18.2R3 and later to before 18.2R3-S3, various 18.2X75 builds be...

Important kernel security update: Virtuozzo ReadyKernel patch 117.0 for Virtuozzo Hybrid Server 7.0, Virtuozzo Infrastructure Platform 3.0, and Virtuozzo Hybrid Infrastructure 3.5, 4.0

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. IMPORTANT: If bcache is used, manually unloading this or a...

kernel: memory leak in ccp_run_sha_cmd() function in drivers/crypto/ccp/ccp-ops.c

A flaw was found in the AMD Cryptographic Co-processor driver in the Linux kernel. An attacker, able to send invalid SHA type commands, could cause the system to crash. The highest threat from this vulnerability is to system availability...

kernel: out-of-bounds read in set_fdc in drivers/block/floppy.c

An out-of-bounds OOB memory access flaw was found in the floppy driver module in the Linux kernel. A bounds check failure allows a local attacker to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability i...

kernel: Null pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c

A flaw was found in the Linux kernel’s implementation of dropping sysctl entries. A local attacker who has access to load modules on the system can trigger a condition during module load failure and panic the system...

kernel: use-after-free in __ext4_expand_extra_isize and ext4_xattr_set_entry related to fs/ext4/inode.c and fs/ext4/super.c

A use-after-free flaw was found in the Linux kernel’s ext4 file system functionality when the user mount ext4 partition, with the usage of an additional debug parameter is defining an extra inode size. If this parameter has a non zero value, this flaw allows a local user to crash the system when...

kernel: null pointer dereference in drivers/media/usb/zr364xx/zr364xx.c driver

A vulnerability was found in the Linux kernel. The Zr364xx USB device driver is susceptible to malicious USB devices. An attacker able to add a specific USB device could cause a crash leading to a denial of service...

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 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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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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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...