Уязвимости операционной системы Red Hat Enterprise Linux, позволяющие удаленному нарушителю нарушить конфиденциальность, целостность и доступность защищаемой информации

Уязвимости операционной системы Red Hat Enterprise Linux, позволяющие удаленному нарушителю нарушить конфиденциальность, целостность и доступность защищаемой информации

Уязвимости операционной системы Ubuntu, позволяющие удаленному злоумышленнику нарушить конфиденциальность, целостность и доступность защищаемой информации

Уязвимости операционной системы Ubuntu, позволяющие удаленному злоумышленнику нарушить конфиденциальность, целостность и доступность защищаемой информации

arch/s390/kernel/ptrace.c in the Linux kernel before 3.15.8 on the s390 platform does not properly restrict address-space control operations in PTRACE_POKEUSR_AREA requests, which allows local users to obtain read and write access to kernel memory locations, and consequently gain privileges, via a crafted application that makes a ptrace system call.

The PPPoL2TP feature in net/l2tp/l2tp_ppp.c in the Linux kernel through 3.15.6 allows local users to gain privileges by leveraging data-structure differences between an l2tp socket and an inet socket.

The mountpoint_last function in fs/namei.c in the Linux kernel before 3.15.8 does not properly maintain a certain reference count during attempts to use the umount system call in conjunction with a symlink, which allows local users to cause a denial of service (memory consumption or use-after-free) or possibly have unspecified other impact via the umount program.

The sctp_assoc_update function in net/sctp/associola.c in the Linux kernel through 3.15.8, when SCTP authentication is enabled, allows remote attackers to cause a denial of service (NULL pointer dereference and OOPS) by starting to establish an association between two endpoints immediately after an exchange of INIT and INIT ACK chunks to establish an earlier association between these endpoints in the opposite direction.

The implementation of certain splice_write file operations in the Linux kernel before 3.16 does not enforce a restriction on the maximum size of a single file, which allows local users to cause a denial of service (system crash) or possibly have unspecified other impact via a crafted splice system call, as demonstrated by use of a file descriptor associated with an ext4 filesystem.