Withdrawn by the publisher.

There is a use-after-free in kernel versions before 5.5 due to a race condition between the release of ptp_clock and cdev while resource deallocation. When a (high privileged) process allocates a ptp device file (like /dev/ptpX) and voluntarily goes to sleep. During this time if the underlying device is removed, it can cause an exploitable condition as the process wakes up to terminate and clean all attached files. The system crashes due to the cdev structure being invalid (as already freed) which is pointed to by the inode.

There is a use-after-free in kernel versions before 5.5 due to a race condition between the release of ptp_clock and cdev while resource deallocation. When a (high privileged) process allocates a ptp device file (like /dev/ptpX) and voluntarily goes to sleep. During this time if the underlying device is removed, it can cause an exploitable condition as the process wakes up to terminate and clean all attached files. The system crashes due to the cdev structure being invalid (as already freed) which is pointed to by the inode.

Security update for the Linux Kernel

kernel: nfs: NULL pointer dereference due to an anomalized NFS message sequence kernel: triggering AP to send IAPP location updates for stations before the required authentication process has completed can lead to DoS kernel: memory leak in the kernel_read_file function in fs/exec.c allows to cause a denial of service Kernel: net: using kernel space address bits to derive IP ID may potentially break KASLR kernel: use-after-free in function __mdiobus_register() in drivers/net/phy/mdio_bus.c kernel: An out-of-bounds read in drivers/scsi/qedi/qedi_dbg.c leading to crash or information disclosure kernel: a NULL pointer dereference in drivers/net/wireless/ath/ath10k/usb.c leads to a crash kernel: Null pointer dereference in the sound/usb/line6/pcm.c kernel: Null pointer dereference in the sound/usb/line6/driver.c kernel: null pointer dereference in drivers/net/wireless/intel/iwlwifi/pcie/trans.c kernel: unprivileged users able to create RAW sockets in AF_IEEE802154 network protocol kernel: unprivileged users able to create RAW sockets in AF_ISDN network protocol kernel: The flow_dissector feature allows device tracking kernel: integer overflow in tcp_ack_update_rtt in net/ipv4/tcp_input.c kernel: dos in mlx5_fpga_conn_create_cq() function in drivers/net/ethernet/mellanox/mlx5/core/fpga/conn.c kernel: dos in mlx5_fw_fatal_reporter_dump() function in drivers/net/ethernet/mellanox/mlx5/core/health.c kernel: memory leak in the nl80211_get_ftm_responder_stats() function in net/wireles…

Security update for the Linux Kernel

Affected: Ubuntu:Pro:14.04:LTS: linux-aws, Ubuntu:Pro:14.04:LTS: linux-azure, Ubuntu:Pro:14.04:LTS: linux-lts-xenial, Ubuntu:Pro:14.04:LTS: linux, Ubuntu:16.04:LTS: linux, Ubuntu:16.04:LTS: linux-aws, Ubuntu:16.04:LTS: linux-aws-hwe, Ubuntu:16.04:LTS: linux-azure, Ubuntu:16.04:LTS: linux-gcp, Ubuntu:16.04:LTS: linux-hwe and 40 more

There is a use-after-free in kernel versions before 5.5 due to a race condition between the release of ptp_clock and cdev while resource deallocation. When a (high privileged) process allocates a ptp device file (like /dev/ptpX) and voluntarily goes to sleep. During this time if the underlying device is removed, it can cause an exploitable condition as the process wakes up to terminate and clean all attached files. The system crashes due to the cdev structure being invalid (as already freed) which is pointed to by the inode.

Ein lokaler Angreifer kann eine Schwachstelle im Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen.