[LU-11652] kernel update [SLES12 SP3 4.4.162-94.69.2]

Related — Wed, 6 Mar 2019 06:35:48 +0000

The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.162 to receive
various security and bugfixes.

The following security bugs were fixed:

CVE-2018-14633: A security flaw was found in the
chap_server_compute_md5() function in the ISCSI target code in a way an
authentication request from an ISCSI initiator is processed. An
unauthenticated remote attacker can cause a stack buffer overflow and
smash up to 17 bytes of the stack. The attack requires the iSCSI target
to be enabled on the victim host. Depending on how the target's code was
built (i.e. depending on a compiler, compile flags and hardware
architecture) an attack may lead to a system crash and thus to a
denial-of-service or possibly to a non-authorized access to data
exported by an iSCSI target. Due to the nature of the flaw, privilege
escalation cannot be fully ruled out, although we believe it is highly
unlikely. (bnc#1107829).
CVE-2018-18281: The mremap() syscall performs TLB flushes after dropping
pagetable locks. If a syscall such as ftruncate() removes entries from
the pagetables of a task that is in the middle of mremap(), a stale TLB
entry can remain for a short time that permits access to a physical page
after it has been released back to the page allocator and reused.
(bnc#1113769).
CVE-2018-18386: drivers/tty/n_tty.c allowed local attackers (who are
able to access pseudo terminals) to hang/block further usage of any
pseudo terminal devices due to an EXTPROC versus ICANON confusion in
TIOCINQ (bnc#1094825).
CVE-2018-18690: A local attacker able to set attributes on an xfs
filesystem could make this filesystem non-operational until the next
mount by triggering an unchecked error condition during an xfs attribute
change, because xfs_attr_shortform_addname in fs/xfs/libxfs/xfs_attr.c
mishandled ATTR_REPLACE operations with conversion of an attr from short
to long form (bnc#1105025).
CVE-2018-18710: An issue was discovered in the Linux kernel An
information leak in cdrom_ioctl_select_disc in drivers/cdrom/cdrom.c
could be used by local attackers to read kernel memory because a cast
from unsigned long to int interferes with bounds checking. This is
similar to CVE-2018-10940 and CVE-2018-16658 (bnc#1113751).
CVE-2018-9516: A lack of certain checks in the hid_debug_events_read()
function in the drivers/hid/hid-debug.c file might have resulted in
receiving userspace buffer overflow and an out-of-bounds write or to the
infinite loop. (bnc#1108498).

For fixed non-security bugs, please refer to:
http://lists.suse.com/pipermail/sle-security-updates/2018-November/004844.html

Whamcloud Community JIRA

[LU-11652] kernel update [SLES12 SP3 4.4.162-94.69.2]