The SUSE Linux Enterprise 12 SP3 RT kernel was updated to 4.4.155 to receive various security and bugfixes.
The following security bugs were fixed:
- CVE-2018-13093: Prevent NULL pointer dereference and panic in lookup_slow()
on a NULL inode->i_ops pointer when doing pathwalks on a corrupted xfs image.
This occured because of a lack of proper validation that cached inodes are free
during allocation (bnc#1100001)
- CVE-2018-13095: Prevent denial of service (memory corruption and BUG) that
could have occurred for a corrupted xfs image upon encountering an inode that
is in extent format, but has more extents than fit in the inode fork
(bnc#1099999)
- CVE-2018-13094: Prevent OOPS that may have occured for a corrupted xfs image
after xfs_da_shrink_inode() is called with a NULL bp (bnc#1100000)
- CVE-2018-12896: Prevent integer overflow in the POSIX timer code that was
caused by the way the overrun accounting works. Depending on interval and
expiry time values, the overrun can be larger than INT_MAX, but the accounting
is int based. This basically made the accounting values, which are visible to
user space via timer_getoverrun(2) and siginfo::si_overrun, random. This
allowed a local user to cause a denial of service (signed integer overflow) via
crafted mmap, futex, timer_create, and timer_settime system calls (bnc#1099922)
- CVE-2018-16658: Prevent information leak in cdrom_ioctl_drive_status that
could have been used by local attackers to read kernel memory (bnc#1107689)
- CVE-2018-6555: The irda_setsockopt function allowed local users to cause a
denial of service (ias_object use-after-free and system crash) or possibly have
unspecified other impact via an AF_IRDA socket (bnc#1106511)
- CVE-2018-6554: Prevent memory leak in the irda_bind function that allowed
local users to cause a denial of service (memory consumption) by repeatedly
binding an AF_IRDA socket (bnc#1106509)
- CVE-2018-1129: A flaw was found in the way signature...