| Descripción: | Summary:
The remote host is missing an update for the 'Linux Kernel' package(s) announced via the SUSE-SU-2018:2384-1 advisory.
Vulnerability Insight:
The SUSE Linux Enterprise 12 SP1 LTSS kernel was updated to receive various security and bugfixes.
The following security bugs were fixed:
- CVE-2018-3620: Local attackers on baremetal systems could use
speculative code patterns on hyperthreaded processors to read data
present in the L1 Datacache used by other hyperthreads on the same CPU
core, potentially leaking sensitive data. (bnc#1087081).
- CVE-2018-3646: Local attackers in virtualized guest systems could use
speculative code patterns on hyperthreaded processors to read data
present in the L1 Datacache used by other hyperthreads on the same CPU
core, potentially leaking sensitive data, even from other virtual
machines or the host system. (bnc#1089343).
- CVE-2018-14734: drivers/infiniband/core/ucma.c allowed
ucma_leave_multicast to access a certain data structure after a cleanup
step in ucma_process_join, which allowed attackers to cause a denial of
service (use-after-free) (bnc#1103119).
- CVE-2018-13053: The alarm_timer_nsleep function in
kernel/time/alarmtimer.c had via a large relative timeout because
ktime_add_safe is not used (bnc#1099924).
- CVE-2018-13405: The inode_init_owner function in fs/inode.c allowed
local users to create files with an unintended group ownership, in a
scenario where a directory is SGID to a certain group and is writable by
a user who is not a member of that group. Here, the non-member can
trigger creation of a plain file whose group ownership is that group.
The intended behavior was that the non-member can trigger creation of a
directory (but not a plain file) whose group ownership is that group.
The non-member can escalate privileges by making the plain file
executable and SGID (bnc#1100416).
- CVE-2018-13406: An integer overflow in the uvesafb_setcmap function in
drivers/video/fbdev/uvesafb.c could result in local attackers being able
to crash the kernel or potentially elevate privileges because
kmalloc_array is not used (bnc#1098016 bnc#1100418).
The following non-security bugs were fixed:
- bcache: add backing_request_endio() for bi_end_io (bsc#1064233).
- bcache: add CACHE_SET_IO_DISABLE to struct cache_set flags (bsc#1064233).
- bcache: add io_disable to struct cached_dev (bsc#1064233).
- bcache: add journal statistic (bsc#1076110).
- bcache: Add __printf annotation to __bch_check_keys() (bsc#1076110).
- bcache: add stop_when_cache_set_failed option to backing device
(bsc#1064233).
- bcache: add wait_for_kthread_stop() in bch_allocator_thread()
(bsc#1064233).
- bcache: Annotate switch fall-through (bsc#1076110).
- bcache: closures: move control bits one bit right (bsc#1076110).
- bcache: correct flash only vols (check all uuids) (bsc#1064233).
- bcache: count backing device I/O error for writeback I/O (bsc#1064233).
- bcache: do not attach backing with duplicate UUID (bsc#1076110).
- bcache: Fix a compiler warning in bcache_device_init() ... [Please see the references for more information on the vulnerabilities]
Affected Software/OS:
'Linux Kernel' package(s) on SUSE Linux Enterprise Module for Public Cloud 12, SUSE Linux Enterprise Server 12-SP1, SUSE Linux Enterprise Server for SAP 12-SP1.
Solution:
Please install the updated package(s).
CVSS Score:
7.2
CVSS Vector:
AV:L/AC:L/Au:N/C:C/I:C/A:C
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