Поиск уязвимостей

Уязвимость в функции can_can_gw_rcv in net/can/gw.c ядра операционных систем Linux, позволяющая нарушителю вызвать отказ в обслуживании

ALT-PU-2019-1117: package `kernel-image-un-def` update to version 4.19.17-alt1

ALT-PU-2019-1116: package `kernel-image-std-pae` update to version 4.14.95-alt1

ALT-PU-2019-1115: package `kernel-image-std-def` update to version 4.14.95-alt1

ALT-PU-2019-1114: package `kernel-image-std-debug` update to version 4.14.95-alt1

ALT-PU-2019-1046: package `kernel-image-un-def` update to version 4.19.15-alt1

ALT-PU-2019-2213: package `kernel-image-tegra` update to version 4.9.140-alt2

An issue was discovered in can_can_gw_rcv in net/can/gw.c in the Linux kernel through 4.19.13. The CAN frame modification rules allow bitwise logical operations that can be also applied to the can_dlc field. The privileged user "root" with CAP_NET_ADMIN can create a CAN frame modification rule that makes the data length code a higher value than the available CAN frame data size. In combination with a configured checksum calculation where the result is stored relatively to the end of the data (e.g. cgw_csum_xor_rel) the tail of the skb (e.g. frag_list pointer in skb_shared_info) can be rewritten which finally can cause a system crash. Because of a missing check, the CAN drivers may write arbitrary content beyond the data registers in the CAN controller's I/O memory when processing can-gw manipulated outgoing frames.

An issue was discovered in can_can_gw_rcv in net/can/gw.c in the Linux kernel through 4.19.13. The CAN frame modification rules allow bitwise logical operations that can be also applied to the can_dlc field. The privileged user "root" with CAP_NET_ADMIN can create a CAN frame modification rule that makes the data length code a higher value than the available CAN frame data size. In combination with a configured checksum calculation where the result is stored relatively to the end of the data (e.g. cgw_csum_xor_rel) the tail of the skb (e.g. frag_list pointer in skb_shared_info) can be rewritten which finally can cause a system crash. Because of a missing check, the CAN drivers may write arbitrary content beyond the data registers in the CAN controller's I/O memory when processing can-gw manipulated outgoing frames.

An issue was discovered in can_can_gw_rcv in net/can/gw.c in the Linux kernel through 4.19.13. The CAN frame modification rules allow bitwise logical operations that can be also applied to the can_dlc field. The privileged user "root" with CAP_NET_ADMIN can create a CAN frame modification rule that makes the data length code a higher value than the available CAN frame data size. In combination with a configured checksum calculation where the result is stored relatively to the end of the data (e.g. cgw_csum_xor_rel) the tail of the skb (e.g. frag_list pointer in skb_shared_info) can be rewritten which finally can cause a system crash. Because of a missing check, the CAN drivers may write arbitrary content beyond the data registers in the CAN controller's I/O memory when processing can-gw manipulated outgoing frames.

An issue was discovered in can_can_gw_rcv in net/can/gw.c in the Linux ...

An issue was discovered in can_can_gw_rcv in net/can/gw.c in the Linux kernel through 4.19.13. The CAN frame modification rules allow bitwise logical operations that can be also applied to the can_dlc field. The privileged user "root" with CAP_NET_ADMIN can create a CAN frame modification rule that makes the data length code a higher value than the available CAN frame data size. In combination with a configured checksum calculation where the result is stored relatively to the end of the data (e.g. cgw_csum_xor_rel) the tail of the skb (e.g. frag_list pointer in skb_shared_info) can be rewritten which finally can cause a system crash. Because of a missing check, the CAN drivers may write arbitrary content beyond the data registers in the CAN controller's I/O memory when processing can-gw manipulated outgoing frames.

ALT-PU-2019-1139: package `kernel-image-mp` update to version 4.20.4-alt1

ELSA-2019-4596: Unbreakable Enterprise kernel security update (IMPORTANT)

ELSA-2019-4600: Unbreakable Enterprise kernel security update (IMPORTANT)

Security update for the Linux Kernel

Security update for the Linux Kernel

ELSA-2019-4612: Unbreakable Enterprise kernel security update (IMPORTANT)

ALT-PU-2020-4285: package `kernel-image-xenomai` update to version 4.19.114-alt1.cip24.12

Security update for the Linux Kernel