The SUSE Linux Enterprise 12 SP3 kernel was updated to receive various security and bugfixes.
The following security bugs were fixed:
- CVE-2019-10638: In the Linux kernel, a device could be tracked by an attacker using the IP ID values the kernel produces for connection-less protocols (e.g., UDP and ICMP). When such traffic was sent to multiple destination IP addresses, it was possible to obtain hash collisions (of indices to the counter array) and thereby obtain the hashing key (via enumeration). An attack may have been conducted by hosting a crafted web page that uses WebRTC or gQUIC to force UDP traffic to attacker-controlled IP addres
The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.180 to receive various security and bugfixes.
The following security bugs were fixed:
- CVE-2019-11477: A sequence of SACKs may have been crafted such that one can trigger an integer overflow, leading to a kernel panic.
- CVE-2019-11478: It was possible to send a crafted sequence of SACKs which will
fragment the TCP retransmission queue. An attacker may have been able to further exploit the fragmented queue to cause an
expensive linked-list walk for subsequent SACKs received for that same TCP connection.
- CVE-2019-11479: An attacker could force the Linux kernel to segment its resp
The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.178 to receive various security and bugfixes.
Four new speculative execution issues have been identified in Intel CPUs. (bsc#1111331)
- CVE-2018-12126: Microarchitectural Store Buffer Data Sampling (MSBDS)
- CVE-2018-12127: Microarchitectural Fill Buffer Data Sampling (MFBDS)
- CVE-2018-12130: Microarchitectural Load Port Data Samling (MLPDS)
- CVE-2019-11091: Microarchitectural Data Sampling Uncacheable Memory (MDSUM)
This kernel update contains software mitigations, utilizing CPU microcode updates shipped in parallel.
For more information on this set of information leaks, chec
The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.176 to receive various security and bugfixes.
The following security bugs were fixed:
- CVE-2019-9213: expand_downwards in mm/mmap.c lacked a check for the mmap minimum address, which made it easier for attackers to exploit kernel NULL pointer dereferences on non-SMAP platforms. This is related to a capability check for the wrong task (bnc#1128166).
- CVE-2019-2024: A use-after-free when disconnecting a source was fixed which could lead to crashes. bnc#1129179).
The following non-security bugs were fixed:
- ax25: fix possible use-after-free (bnc#1012382).
- block_dev: fix crash
The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.175 to receive various security and bugfixes.
The following security bugs were fixed:
- CVE-2019-6974: kvm_ioctl_create_device in virt/kvm/kvm_main.c mishandled reference counting because of a race condition, leading to a use-after-free. (bnc#1124728)
- CVE-2019-7221: Fixed a user-after-free vulnerability in the KVM hypervisor related to the emulation of a preemption timer, allowing an guest user/process to crash the host kernel. (bsc#1124732).
- CVE-2019-7222: Fixed an information leakage in the KVM hypervisor related to handling page fault exceptions, which allowed a guest user/
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
The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.156 to receive various security and bugfixes.
The following security bugs were fixed:
- CVE-2018-16597: Incorrect access checking in overlayfs mounts could have been
used by local attackers to modify or truncate files in the underlying
filesystem (bnc#1106512).
- CVE-2018-14613: Prevent invalid pointer dereference in io_ctl_map_page() when
mounting and operating a crafted btrfs image, caused by a lack of block group
item validation in check_leaf_item (bsc#1102896)
- CVE-2018-14617: Prevent NULL pointer dereference and panic in
hfsplus_lookup() when opening a file (that is
The SUSE Linux Enterprise 12 SP3 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
The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.143 to receive various security and bugfixes.
The following security bugs were fixed:
- CVE-2018-5390 aka 'SegmentSmack': Linux kernel could be forced to make very expensive calls to tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() for every incoming packet which can lead to a denial of service (bnc#1102340).
- CVE-2018-14734: drivers/infiniband/core/ucma.c in the Linux kernel 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-2017-18
The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.140 to receive various security and bugfixes.
The following security bugs were fixed:
- CVE-2018-13053: The alarm_timer_nsleep function had an integer overflow via a
large relative timeout because ktime_add_safe was not used (bnc#1099924)
- CVE-2018-9385: Prevent overread of the 'driver_override' buffer (bsc#1100491)
- CVE-2018-13405: The inode_init_owner function allowed local users to create
files with an unintended group ownership allowing attackers to escalate
privileges by making a plain file executable and SGID (bnc#1100416)
- CVE-2018-13406: An integer overflow in the
The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.136 to receive various security and bugfixes.
The following security bugs were fixed:
- CVE-2018-5848: In the function wmi_set_ie(), the length validation code did
not handle unsigned integer overflow properly. As a result, a large value of
the 'ie_len' argument could have caused a buffer overflow (bnc#1097356).
- CVE-2017-18249: The add_free_nid function did not properly track an allocated
nid, which allowed local users to cause a denial of service (race condition) or
possibly have unspecified other impact via concurrent threads (bnc#1087036).
- CVE-2018-3665: Prevent dis
The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.131 to receive various security and bugfixes.
The following security bugs were fixed:
- CVE-2018-3639: Information leaks using 'Memory Disambiguation' feature
in modern CPUs were mitigated, aka 'Spectre Variant 4' (bnc#1087082).
A new boot commandline option was introduced,
'spec_store_bypass_disable', which can have following values:
- auto: Kernel detects whether your CPU model contains an implementation
of Speculative Store Bypass and picks the most appropriate mitigation.
- on: disable Speculative Store Bypass
- off: enable Speculative Store Bypass
- prctl:
The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.126 to receive various security and bugfixes.
The following security bugs were fixed:
- CVE-2018-1091: In the flush_tmregs_to_thread function in arch/powerpc/kernel/ptrace.c, a guest kernel crash can be triggered from unprivileged userspace during a core dump on a POWER host due to a missing processor feature check and an erroneous use of transactional memory (TM) instructions in the core dump path, leading to a denial of service (bnc#1087231).
- CVE-2018-7740: The resv_map_release function in mm/hugetlb.c allowed local users to cause a denial of service (BUG) via a crafted applic
The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.120 to receive various security and bugfixes.
The following security bugs were fixed:
- CVE-2017-13166: An elevation of privilege vulnerability in the v4l2 video driver. (bnc#1072865).
- CVE-2017-15951: The KEYS subsystem did not correctly synchronize the actions of updating versus finding a key in the 'negative' state to avoid a race condition, which allowed local users to cause a denial of service or possibly have unspecified other impact via crafted system calls (bnc#1062840 bnc#1065615).
- CVE-2017-16644: The hdpvr_probe function in drivers/media/usb/hdpvr/hdpvr-core.c allowe
The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.114 to receive various security and bugfixes.
The following security bugs were fixed:
- CVE-2017-5715: Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis (bnc#1068032).
The previous fix using CPU Microcode has been complemented by building the Linux Kernel with return trampolines aka 'retpolines'.
- CVE-2017-15129: A use-after-free vulnerability was found in network namespaces code affecting the Linux kernel in the function
The SUSE Linux Enterprise 12 SP3 kernel was updated to receive various security and bugfixes.
This update is only provided as a fix update for IBM Z platform.
- CVE-2017-5753 / 'Spectre Attack': IBM Z fixes were included but not enabled in the previous update. This update enables those fixes.
- CVE-2017-5715 / 'Spectre Attack': IBM Z fixes were already included in the previous update. A bugfix for the patches has been applied on top.
- CVE-2017-5754: The IBM Z architecture is not affected by the 'Meltdown' attack.
The SUSE Linux Enterprise 12 SP3 kernel was updated to receive various security and bugfixes.
This update adds mitigations for various side channel attacks against modern CPUs that could disclose
content of otherwise unreadable memory (bnc#1068032).
- CVE-2017-5753 / 'SpectreAttack': Local attackers on systems with modern CPUs featuring
deep instruction pipelining could use attacker controllable speculative
execution over code patterns in the Linux Kernel to leak content from
otherwise not readable memory in the same address space, allowing
retrieval of passwords, cryptographic keys and other secrets.
This problem is mitigated
The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.103 to receive various security and bugfixes.
The following security bugs were fixed:
- CVE-2017-1000410: The Linux kernel was affected by an information lea that lies in the processing of incoming L2CAP commands - ConfigRequest, and ConfigResponse messages. (bnc#1070535).
- CVE-2017-11600: net/xfrm/xfrm_policy.c in the Linux kernel did not ensure that the dir value of xfrm_userpolicy_id is XFRM_POLICY_MAX or less, which allowed local users to cause a denial of service (out-of-bounds access) or possibly have unspecified other impact via an XFRM_MSG_MIGRATE xfrm Netlink message (bn
The SUSE Linux Enterprise 12 SP3 kernel was updated to receive various security and bugfixes.
The following security bugs were fixed:
- CVE-2017-1000405: A bug in the THP CoW support could be used by local attackers to corrupt memory of other processes and cause them to crash (bnc#1069496).
- CVE-2017-16939: The XFRM dump policy implementation in net/xfrm/xfrm_user.c in the Linux kernel allowed local users to gain privileges or cause a denial of service (use-after-free) via a crafted SO_RCVBUF setsockopt system call in conjunction with XFRM_MSG_GETPOLICY Netlink messages (bnc#1069702).
The following non-security bugs were fixed:
Fix a b
The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.92 to receive various security and bugfixes.
The following security bugs were fixed:
- CVE-2017-1000252: The KVM subsystem in the Linux kernel allowed guest OS users to cause a denial of service (assertion failure, and hypervisor hang or crash) via an out-of bounds guest_irq value, related to arch/x86/kvm/vmx.c and virt/kvm/eventfd.c (bnc#1058038).
- CVE-2017-11472: The acpi_ns_terminate() function in drivers/acpi/acpica/nsutils.c in the Linux kernel did not flush the operand cache and causes a kernel stack dump, which allowed local users to obtain sensitive information from kerne