SUSE-SU-2019:1851-1

SUSE-SU-2019:1851-1 · Security update for the Linux Kernel

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The SUSE Linux Enterprise 12 SP4 kernel was updated to receive various security and bugfixes. The following security bugs were fixed: - CVE-2019-10638: A device could have been 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 addresses. (bnc#1140575) - CVE-2019-10639: Information Exposure (partial kernel address disclosure), leading to a KASLR bypass. Specifically, it was possible to extract the KASLR kernel image offset 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). This key contains enough bits from a kernel address (of a static variable) so when the key is extracted (via enumeration), the offset of the kernel image was exposed. This attack could have been carried out remotely, by the attacker forcing the target device to send UDP or ICMP (or certain other) traffic to attacker-controlled IP addresses. Forcing a server to send UDP traffic is trivial if the server is a DNS server. ICMP traffic was trivial if the server answered ICMP Echo requests (ping). For client targets, if the target visited the attacker's web page, then WebRTC or gQUIC could be used to force UDP traffic to attacker-controlled IP addresses. (bnc#1140577) - CVE-2018-20836: A race condition in smp_task_timedout() and smp_task_done() in drivers/scsi/libsas/sas_expander.c, could have lead to a use-after-free. (bnc#1134395) - CVE-2019-11599: The coredump implementation in the Linux kernel did not use locking or other mechanisms to prevent vma layout or vma flags changes while it runs, which allowed local users to obtain sensitive information, cause a denial of service, or possibly have unspecified other impact by triggering a race condition with mmget_not_zero or get_task_mm calls. This is related to fs/userfaultfd.c, mm/mmap.c, fs/proc/task_mmu.c, and drivers/infiniband/core/uverbs_main.c. (bnc#1133738) - CVE-2019-12614: An unchecked kstrdup might have allowed an attacker to cause denial of service (a NULL pointer dereference and system crash). (bnc#1137194) - CVE-2019-12819: The function __mdiobus_register() in drivers/net/phy/mdio_bus.c called put_device() which would trigger a fixed_mdio_bus_init use-after-free. This would cause a denial of service. (bnc#1138291) - CVE-2019-12818: The nfc_llcp_build_tlv function in net/nfc/llcp_commands.c may have returned NULL. If the caller did not check for this, it would trigger a NULL pointer dereference. This would cause denial of service. (bnc#1138293) The following non-security bugs were fixed: - 6lowpan: Off by one handling ->nexthdr (bsc#1051510). - acpi / property: fix handling of data_nodes in acpi_get_next_subnode() (bsc#1051510). - acpi: Add Hygon Dhyana support - af_key: unconditionally clone on broadcast (bsc#1051510). - alsa: firewire-lib/fireworks: fix miss detection of received MIDI messages (bsc#1051510). - alsa: firewire-motu: fix destruction of data for isochronous resources (bsc#1051510). - alsa: hda - Force polling mode on CNL for fixing codec communication (bsc#1051510). - alsa: hda/realtek - Change front mic location for Lenovo M710q (bsc#1051510). - alsa: hda/realtek - Set default power save node to 0 (bsc#1051510). - alsa: hda/realtek - Update headset mode for ALC256 (bsc#1051510). - alsa: hda/realtek: Add quirks for several Clevo notebook barebones (bsc#1051510). - alsa: line6: Fix write on zero-sized buffer (bsc#1051510). - alsa: oxfw: allow PCM capture for Stanton SCS.1m (bsc#1051510). - alsa: seq: fix incorrect order of dest_client/dest_ports arguments (bsc#1051510). - alsa: usb-audio: fix sign unintended sign extension on left shifts (bsc#1051510). - apparmor: enforce nullbyte at end of tag string (bsc#1051510). - asoc: cs42xx8: Add regcache mask dirty (bsc#1051510). - asoc: eukrea-tlv320: fix a leaked reference by adding missing of_node_put (bsc#1051510). - asoc: fsl_asrc: Fix the issue about unsupported rate (bsc#1051510). - asoc: fsl_sai: Update is_slave_mode with correct value (bsc#1051510). - asoc: fsl_utils: fix a leaked reference by adding missing of_node_put (bsc#1051510). - asoc: hdmi-codec: unlock the device on startup errors (bsc#1051510). - audit: fix a memory leak bug (bsc#1051510). - ax25: fix inconsistent lock state in ax25_destroy_timer (bsc#1051510). - batman-adv: allow updating DAT entry timeouts on incoming ARP Replies (bsc#1051510). - blk-mq: fix hang caused by freeze/unfreeze sequence (bsc#1128432). - blk-mq: free hw queue's resource in hctx's release handler (bsc#1140637). - block: Fix a NULL pointer dereference in generic_make_request() (bsc#1139771). - bluetooth: Fix faulty expression for minimum encryption key size check (bsc#1140328). - bluetooth: Replace the bluetooth fix with the upstream commit (bsc#1135556) - brcmfmac: convert dev_init_lock mutex to completion (bsc#1051510). - brcmfmac: fix Oops when bringing up interface during USB disconnect (bsc#1051510). - brcmfmac: fix WARNING during USB disconnect in case of unempty psq (bsc#1051510). - brcmfmac: fix missing checks for kmemdup (bsc#1051510). - brcmfmac: fix race during disconnect when USB completion is in progress (bsc#1051510). - can: af_can: Fix error path of can_init() (bsc#1051510). - can: flexcan: fix timeout when set small bitrate (bsc#1051510). - can: purge socket error queue on sock destruct (bsc#1051510). - ceph: flush dirty inodes before proceeding with remount (bsc#1140405). - cfg80211: fix memory leak of wiphy device name (bsc#1051510). - chardev: add additional check for minor range overlap (bsc#1051510). - clk: rockchip: Turn on 'aclk_dmac1' for suspend on rk3288 (bsc#1051510). - clk: tegra: Fix PLLM programming on Tegra124+ when PMC overrides divider (bsc#1051510). - coresight: etb10: Fix handling of perf mode (bsc#1051510). - coresight: etm4x: Add support to enable ETMv4.2 (bsc#1051510). - cpu/topology: Export die_id (jsc#SLE-5454). - cpufreq: AMD: Ignore the check for ProcFeedback in ST/CZ (). - cpufreq: Add Hygon Dhyana support (). - crypto: algapi - guard against uninitialized spawn list in crypto_remove_spawns (bsc#1133401). - crypto: cryptd - Fix skcipher instance memory leak (bsc#1051510). - crypto: user - prevent operating on larval algorithms (bsc#1133401). - device core: Consolidate locking and unlocking of parent and device (bsc#1106383). - dm, dax: Fix detection of DAX support (bsc#1139782). - dmaengine: imx-sdma: remove BD_INTR for channel0 (bsc#1051510). - doc: Cope with the deprecation of AutoReporter (bsc#1051510). - docs: Fix conf.py for Sphinx 2.0 (bsc#1135642). - documentation: Correct the possible MDS sysfs values (bsc#1135642). - drbd: Avoid Clang warning about pointless switch statment (bsc#1051510). - drbd: disconnect, if the wrong UUIDs are attached on a connected peer (bsc#1051510). - drbd: narrow rcu_read_lock in drbd_sync_handshake (bsc#1051510). - drbd: skip spurious timeout (ping-timeo) when failing promote (bsc#1051510). - driver core: Establish order of operations for device_add and device_del via bitflag (bsc#1106383). - driver core: Probe devices asynchronously instead of the driver (bsc#1106383). - drivers/base: Introduce kill_device() (bsc#1139865). - drivers/base: kABI fixes for struct device_private (bsc#1106383). - drivers/rapidio/devices/rio_mport_cdev.c: fix resource leak in error handling path in 'rio_dma_transfer()' (bsc#1051510). - drivers/rapidio/rio_cm.c: fix potential oops in riocm_ch_listen() (bsc#1051510). - drivers: misc: fix

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Veröffentlicht

2019-07-15T14:00:22Z

Aktualisiert

2026-02-04T04:18:46.843531Z

Technologie-Stack: system

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