The SUSE Linux Enterprise 12 SP4 kernel was updated to 4.12.14 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-2019-11479: An attacker could force the Linux kernel to segment its responses into multiple TCP segments. This would drastically increased the bandwidth required to deliver the same amount of data.
Further, it would consume additional resources such as CPU and NIC processing power.

CVE-2019-3846: A flaw that allowed an attacker to corrupt memory and possibly escalate privileges was found in the mwifiex kernel module while connecting to a malicious wireless network. (bnc#1136424)

CVE-2019-12382: An issue was discovered in drm_load_edid_firmware in drivers/gpu/drm/drm_edid_load.c in the Linux kernel There was an unchecked kstrdup of fwstr, which might have allowed an attacker to cause a denial of service (NULL pointer dereference and system crash).
(bnc#1136586)

CVE-2019-11487: The Linux kernel allowed page reference count overflow, with resultant use-after-free issues, if about 140 GiB of RAM existed. It could have occured with FUSE requests. (bnc#1133190)

CVE-2019-5489: The mincore() implementation in mm/mincore.c in the Linux kernel allowed local attackers to observe page cache access patterns of other processes on the same system, potentially allowing sniffing of secret information. (Fixing this affects the output of the fincore program.) Limited remote exploitation may have been possible, as demonstrated by latency differences in accessing public files from an Apache HTTP Server. (bnc#1120843)

CVE-2019-11833: fs/ext4/extents.c in the Linux kernel did not zero out the unused memory region in the extent tree block, which might have allowed local users to obtain sensitive information by reading uninitialized data in the filesystem. (bnc#1135281)

CVE-2018-7191: In the tun subsystem in the Linux kernel, dev_get_valid_name was not called before register_netdevice. This allowed local users to cause a denial of service (NULL pointer dereference and panic) via an ioctl(TUNSETIFF) call with a dev name containing a / character. (bnc#1135603)

CVE-2019-11085: Insufficient input validation in Kernel Mode Driver in i915 Graphics for Linux may have allowed an authenticated user to potentially enable escalation of privilege via local access.
(bnc#1135278)

CVE-2019-11815: An issue was discovered in rds_tcp_kill_sock in net/rds/tcp.c in the Linux kernel There was a race condition leading to a use-after-free, related to net namespace cleanup. (bnc#1134537)

CVE-2019-11884: The do_hidp_sock_ioctl function in net/bluetooth/hidp/sock.c in the Linux kernel allowed a local user to obtain potentially sensitive information from kernel stack memory via a hidPCONNADD command, because a name field may not end with a '\0' character. (bnc#1134848)

CVE-2019-11486: The Siemens R3964 line discipline driver in drivers/tty/n_r3964.c in the Linux kernel had multiple race conditions. (bnc#1133188)

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:1016 advisory.

  - kernel: out of bound read in DVB connexant driver. (CVE-2015-9289)

  - kernel: Missing permissions check for request_key() destination allows local attackers to add keys to     keyring without Write permission (CVE-2017-17807)

  - kernel: denial of service via ioctl call in network tun handling (CVE-2018-7191)

  - kernel: oob memory read in hso_probe in drivers/net/usb/hso.c (CVE-2018-19985)

  - kernel: usb: missing size check in the __usb_get_extra_descriptor() leading to DoS (CVE-2018-20169)

  - kernel: perf_event_open() and execve() race in setuid programs allows a data leak (CVE-2019-3901)

  - kernel: triggering AP to send IAPP location updates for stations before the required authentication     process has completed can lead to DoS (CVE-2019-5108)

  - kernel: brcmfmac frame validation bypass (CVE-2019-9503)

  - kernel: null-pointer dereference in hci_uart_set_flow_control (CVE-2019-10207)

  - Kernel: net: weak IP ID generation leads to remote device tracking (CVE-2019-10638)

  - Kernel: net: using kernel space address bits to derive IP ID may potentially break KASLR (CVE-2019-10639)

  - kernel: ASLR bypass for setuid binaries due to late install_exec_creds() (CVE-2019-11190)

  - kernel: sensitive information disclosure from kernel stack memory via HIDPCONNADD command (CVE-2019-11884)

  - kernel: unchecked kstrdup of fwstr in drm_load_edid_firmware leads to denial of service (CVE-2019-12382)

  - kernel: use-after-free in arch/x86/lib/insn-eval.c (CVE-2019-13233)

  - kernel: denial of service in arch/powerpc/kernel/signal_32.c and arch/powerpc/kernel/signal_64.c via     sigreturn() system call (CVE-2019-13648)

  - kernel: integer overflow and OOB read in drivers/block/floppy.c (CVE-2019-14283)

  - kernel: heap overflow in mwifiex_set_uap_rates() function of Marvell Wifi Driver leading to DoS     (CVE-2019-14814)

  - kernel: heap-overflow in mwifiex_set_wmm_params() function of Marvell WiFi driver leading to DoS     (CVE-2019-14815)

  - kernel: An out-of-bounds read in drivers/scsi/qedi/qedi_dbg.c leading to crash or information disclosure     (CVE-2019-15090)

  - kernel: use-after-free in sound/core/init.c and sound/core/info.c (CVE-2019-15214)

  - kernel: Null pointer dereference in the sound/usb/line6/pcm.c (CVE-2019-15221)

  - kernel: memory leak in register_queue_kobjects() in net/core/net-sysfs.c leads to denial of service     (CVE-2019-15916)

  - kernel: buffer-overflow hardening in WiFi beacon validation code. (CVE-2019-16746)

  - kernel: powerpc: incomplete Spectre-RSB mitigation leads to information exposure (CVE-2019-18660)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Published	Updated	Severity
125997	SUSE SLES12 Security Update : kernel (SUSE-SU-2019:1536-1) (SACK Panic) (SACK Slowness)	Nessus	SuSE Local Security Checks	6/18/2019	12/5/2022	high
135080	RHEL 7 : kernel (RHSA-2020:1016)	Nessus	Red Hat Local Security Checks	4/1/2020	4/28/2024	critical

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