Уязвимость функции kvm_ioctl_create_device ядра операционных систем Linux, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость подсистемы виртуализации Kernel-based Virtual Machine (KVM) ядра операционных систем Linux, позволяющая нарушителю вызвать отказ в обслуживании или выполнить произвольный код

Уязвимость процессоров Intel, связанная с микроархитектурной выборкой данных некэшируемой памяти (MDSUM), позволяющая нарушителю раскрыть защищаемую информацию

Уязвимость порта загрузки MLPDS микропрограммного обеспечения Intel, связанная с раскрытием информации, позволяющая нарушителю получить доступ к конфиденциальной информации

Уязвимость процессоров Intel, связанная с восстановлением содержимого буферов заполнения (MFBDS), позволяющая нарушителю раскрыть защищаемую информацию

Уязвимость буфера данных MSBDS микропрограммного обеспечения Intel, позволяющая нарушителю получить доступ к конфиденциальной информации

Уязвимость механизма TCP Selective Acknowledgement ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость механизма TCP Selective Acknowledgement ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость ядра операционной системы Linux, вызванная ошибками при обработке сегментов минимального размера, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость файла fs/ext4/extents.c ядра операционной системы Linux, позволяющая нарушителю раскрыть защищаемую информацию

Уязвимость функции hid_debug_events_read () ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость функции mwifiex_update_bss_desc_with_ie ядра операционной системы Linux, позволяющая нарушителю повысить свои привилегии, вызвать отказ в обслуживании или выполнить произвольный код

Уязвимость ядра операционной системы Linux, связанная с ошибкой управления ресурсами, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость драйвера vfio ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость ядра операционной системы Linux, связанная с отсутствием защиты служебных данных, позволяющая нарушителю раскрыть защищаемую информацию

Уязвимость драйверов drivers/bluetooth/hci_ath.c, drivers/bluetooth/hci_bcm.c, drivers/bluetooth/hci_intel.c, drivers/bluetooth/hci_ldisc.c, drivers/bluetooth/hci_mrvl.c, drivers/bluetooth/hci_qca.c, drivers/bluetooth/hci_uart.h для UART-подключаемых адаптеров Bluetooth ядра операционных систем Linux, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость функций ath6kl_wmi_pstream_timeout_event_rx и ath6kl_wmi_cac_event_rx ядра операционной системы Linux, позволяющая нарушителю раскрыть защищаемую информацию или вызвать отказ в обслуживании

Уязвимость функции mwifiex_uap_parse_tail_ies ядра операционной системы Linux, позволяющая нарушителю оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации

Уязвимость функции ptrace_link ядра операционных систем Linux, позволяющая нарушителю вызвать отказ в обслуживании или повысить свои привилегии

The bnep_sock_ioctl function in net/bluetooth/bnep/sock.c in the Linux kernel before 2.6.39 does not ensure that a certain device field ends with a '\0' character, which allows local users to obtain potentially sensitive information from kernel stack memory, or cause a denial of service (BUG and system crash), via a BNEPCONNADD command.

An issue was discovered in net/ipv6/ip6mr.c in the Linux kernel before 4.11. By setting a specific socket option, an attacker can control a pointer in kernel land and cause an inet_csk_listen_stop general protection fault, or potentially execute arbitrary code under certain circumstances. The issue can be triggered as root (e.g., inside a default LXC container or with the CAP_NET_ADMIN capability) or after namespace unsharing. This occurs because sk_type and protocol are not checked in the appropriate part of the ip6_mroute_* functions. NOTE: this affects Linux distributions that use 4.9.x longterm kernels before 4.9.187.

Microarchitectural Store Buffer Data Sampling (MSBDS): Store buffers on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access. A list of impacted products can be found here: https://www.intel.com/content/dam/www/public/us/en/documents/corporate-information/SA00233-microcode-update-guidance_05132019.pdf

Microarchitectural Load Port Data Sampling (MLPDS): Load ports on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access. A list of impacted products can be found here: https://www.intel.com/content/dam/www/public/us/en/documents/corporate-information/SA00233-microcode-update-guidance_05132019.pdf

Microarchitectural Fill Buffer Data Sampling (MFBDS): Fill buffers on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access. A list of impacted products can be found here: https://www.intel.com/content/dam/www/public/us/en/documents/corporate-information/SA00233-microcode-update-guidance_05132019.pdf

A flaw was found in the Linux kernel. A heap based buffer overflow in mwifiex_uap_parse_tail_ies function in drivers/net/wireless/marvell/mwifiex/ie.c might lead to memory corruption and possibly other consequences.

A flaw was found in the Linux kernel's Bluetooth implementation of UART, all versions kernel 3.x.x before 4.18.0 and kernel 5.x.x. An attacker with local access and write permissions to the Bluetooth hardware could use this flaw to issue a specially crafted ioctl function call and cause the system to crash.

Microarchitectural Data Sampling Uncacheable Memory (MDSUM): Uncacheable memory on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access. A list of impacted products can be found here: https://www.intel.com/content/dam/www/public/us/en/documents/corporate-information/SA00233-microcode-update-guidance_05132019.pdf

Jonathan Looney discovered that the TCP_SKB_CB(skb)->tcp_gso_segs value was subject to an integer overflow in the Linux kernel when handling TCP Selective Acknowledgments (SACKs). A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commit 3b4929f65b0d8249f19a50245cd88ed1a2f78cff.

Jonathan Looney discovered that the TCP retransmission queue implementation in tcp_fragment in the Linux kernel could be fragmented when handling certain TCP Selective Acknowledgment (SACK) sequences. A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commit f070ef2ac66716357066b683fb0baf55f8191a2e.

Jonathan Looney discovered that the Linux kernel default MSS is hard-coded to 48 bytes. This allows a remote peer to fragment TCP resend queues significantly more than if a larger MSS were enforced. A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commits 967c05aee439e6e5d7d805e195b3a20ef5c433d6 and 5f3e2bf008c2221478101ee72f5cb4654b9fc363.

fs/ext4/extents.c in the Linux kernel through 5.1.2 does not zero out the unused memory region in the extent tree block, which might allow local users to obtain sensitive information by reading uninitialized data in the filesystem.

In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to create a ptrace relationship, which allows local users to obtain root access by leveraging certain scenarios with a parent-child process relationship, where a parent drops privileges and calls execve (potentially allowing control by an attacker). One contributing factor is an object lifetime issue (which can also cause a panic). Another contributing factor is incorrect marking of a ptrace relationship as privileged, which is exploitable through (for example) Polkit's pkexec helper with PTRACE_TRACEME. NOTE: SELinux deny_ptrace might be a usable workaround in some environments.

In the Linux kernel through 5.2.1 on the powerpc platform, when hardware transactional memory is disabled, a local user can cause a denial of service (TM Bad Thing exception and system crash) via a sigreturn() system call that sends a crafted signal frame. This affects arch/powerpc/kernel/signal_32.c and arch/powerpc/kernel/signal_64.c.

An issue was discovered in the Linux kernel before 5.2.3. Out of bounds access exists in the functions ath6kl_wmi_pstream_timeout_event_rx and ath6kl_wmi_cac_event_rx in the file drivers/net/wireless/ath/ath6kl/wmi.c.

A flaw was found in the Linux kernel in the function hid_debug_events_read() in drivers/hid/hid-debug.c file which may enter an infinite loop with certain parameters passed from a userspace. A local privileged user ("root") can cause a system lock up and a denial of service. Versions from v4.18 and newer are vulnerable.

A flaw that allowed an attacker to corrupt memory and possibly escalate privileges was found in the mwifiex kernel module while connecting to a malicious wireless network.

A flaw was found in the Linux kernel's vfio interface implementation that permits violation of the user's locked memory limit. If a device is bound to a vfio driver, such as vfio-pci, and the local attacker is administratively granted ownership of the device, it may cause a system memory exhaustion and thus a denial of service (DoS). Versions 3.10, 4.14 and 4.18 are vulnerable.

In the Linux kernel before 4.20.8, kvm_ioctl_create_device in virt/kvm/kvm_main.c mishandles reference counting because of a race condition, leading to a use-after-free.

The KVM implementation in the Linux kernel through 4.20.5 has a Use-after-Free.

The KVM implementation in the Linux kernel through 4.20.5 has an Information Leak.