Уязвимость функция nft_set_elem_init файла net/netfilter/nf_tables_api.c компонента User Namespace Handler ядра операционной системы Linux, позволяющая нарушителю получить root доступ

Уязвимость ioctl cmd PIO_FONT ядра операционной системы Linux, позволяющая нарушителю выполнить произвольный код с повышенными привилегиями

When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds.

An issue was discovered in the Linux kernel through 5.18.9. A type confusion bug in nft_set_elem_init (leading to a buffer overflow) could be used by a local attacker to escalate privileges, a different vulnerability than CVE-2022-32250. (The attacker can obtain root access, but must start with an unprivileged user namespace to obtain CAP_NET_ADMIN access.) This can be fixed in nft_setelem_parse_data in net/netfilter/nf_tables_api.c.

An out-of-bounds memory write flaw was found in the Linux kernel’s Kid-friendly Wired Controller driver. This flaw allows a local user to crash or potentially escalate their privileges on the system. It is in bigben_probe of drivers/hid/hid-bigbenff.c. The reason is incorrect assumption - bigben devices all have inputs. However, malicious devices can break this assumption, leaking to out-of-bound write.