Уязвимость в реализации системного вызова mremap() ядра операционной системы Linux, позволяющая нарушителю получить доступ к физической странице

Уязвимость буфера сокета SCTP ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость функции cdrom_ioctl_select_disc (drivers/cdrom/cdrom.c) ядра операционной системы Linux, позволяющая нарушителю получить доступ к конфиденциальным данным

Уязвимость компонента TCP Pace Handler функции tcp_internal_pacing в файле net/ipv4/tcp_output.c ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании

Since Linux kernel version 3.2, the mremap() syscall performs TLB flushes after dropping pagetable locks. If a syscall such as ftruncate() removes entries from the pagetables of a task that is in the middle of mremap(), a stale TLB entry can remain for a short time that permits access to a physical page after it has been released back to the page allocator and reused. This is fixed in the following kernel versions: 4.9.135, 4.14.78, 4.18.16, 4.19.

An issue was discovered in the Linux kernel through 4.19. An information leak in cdrom_ioctl_select_disc in drivers/cdrom/cdrom.c could be used by local attackers to read kernel memory because a cast from unsigned long to int interferes with bounds checking. This is similar to CVE-2018-10940 and CVE-2018-16658.

The SCTP socket buffer used by a userspace application is not accounted by the cgroups subsystem. An attacker can use this flaw to cause a denial of service attack. Kernel 3.10.x and 4.18.x branches are believed to be vulnerable.

An issue was discovered in the Linux Kernel from 4.18 to 4.19, an improper update of sock reference in TCP pacing can lead to memory/netns leak, which can be used by remote clients.