SB2018051004 - SUSE Linux update for the Linux Kernel

Description

This security bulletin contains information about 20 secuirty vulnerabilities.

1) Buffer overflow (CVE-ID: CVE-2015-5156)

The vulnerability allows an adjacent attacker to cause DoS condition on the target system.

The weakness exists in the virtnet_probe function in drivers/net/virtio_net.c due to attempts to support a FRAGLIST feature without proper memory allocation. An adjacent attacker can submit a specially crafted sequence of fragmented packets, trigger buffer overflow and cause the service to crash.

2) Out-of-bounds read (CVE-ID: CVE-2016-7915)

The vulnerability allows a physical attacker to obtain potentially sensitive information or cause DoS condition on the target system.

The weakness exists in the hid_input_field function in drivers/hid/hid-core.c due to out-of-bounds read. A physical attacker can gain access to potentially sensitive information or cause the service to crash.

3) Use-after-free (CVE-ID: CVE-2017-0861)

The vulnerability allows a local user to perform a denial of service attack.

The vulnerability exists due to a use-after-free error in snd_pcm_info() function in the ALSA subsystem.  A local user can perform a denial of service attack.

4) Memory leak (CVE-ID: CVE-2017-12190)

The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists due to an out-of-memory condition. A local attacker can cause a memory leak and possible system lock up.

5) Privilege escalation (CVE-ID: CVE-2017-13166)

The vulnerability allows a local attacker to gain elevated privileges on the target system.

The weakness exists in the V4L2 video driver component of the Google Android kernel due to insufficient validation of user-supplied input. A local attacker can use a specially crafted application and execute arbitrary code with elevated privileges.

Successful exploitation of the vulnerability may result in system compromise.

6) Error handling (CVE-ID: CVE-2017-16644)

The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists due to an error in the hdpvr_probe function in drivers/media/usb/hdpvr/hdpvr-core.c in the Linux kernel through in the Linux kernel. A local attacker can supply a specially crafted USB device, trigger improper error handling and cause the system to crash.

Successful exploitation of the vulnerability results in denial of service.

7) Information disclosure (CVE-ID: CVE-2017-16911)

The vulnerability allows a local attacker to obtain potentially sensitive information.

The vulnerability exists n the vhci_hcd driver due to insufficient security restrictions. A local attacker with a USB device attached over IP can use the affected driver to bypass security restrictions and access sensitive information, such as kernel memory addresses on the targeted system.

8) Out-of-bounds read (CVE-ID: CVE-2017-16912)

The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists in the "get_pipe()" function (drivers/usb/usbip/stub_rx.c) due to out-of-bounds read. A local attacker can supply specially crafted USB over IP packet, trigger memory corruption and cause the service to crash.

9) Memory corruption (CVE-ID: CVE-2017-16913)

The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists in the "stub_recv_cmd_submit()" function (drivers/usb/usbip/stub_rx.c) due to boundary error when handling CMD_SUBMIT packets. A local attacker can supply specially crafted USB over IP packet, trigger memory corruption and cause the service to crash.

10) NULL pointer dereference (CVE-ID: CVE-2017-16914)

The vulnerability allows a remote attacker to cause DoS condition on the targtt system.

The weakness exists in the "stub_send_ret_submit()" function due to NULL pointer dereference. A remote attacker can cause the service to crash.

11) Race condition (CVE-ID: CVE-2017-18203)

The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists in the dm_get_from_kobject function due to race condition. A local attacker can cause the service to crash.

12) Infinite loop (CVE-ID: CVE-2017-18208)

The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists in the madvise_willneed function due to infinite loop. A local attacker can trigger use of MADVISE_WILLNEED for a DAX mapping and cause the service to crash.

13) Improper input validation (CVE-ID: CVE-2018-10087)

The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists in the kernel_wait4 function in kernel/exit.c due to improper validation of the INT_MIN parameter. A local attacker can trigger an error condition and cause the service to crash.

14) Improper input validation (CVE-ID: CVE-2018-10124)

The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists in the kill_something_info function in kernel/signal.c due to  improper validation of input. A local attacker can run a program designed to send malicious requests and cause the service to crash.

15) Improper check or handling of exceptional conditions (CVE-ID: CVE-2018-1087)

The vulnerability allows an adjacent attacker to cause DoS condition or gain elevated privileges on the target system.

The weakness exists in the Linux kernel KVM hypervisor due to improper handling of debug exceptions delivered after a stack switch operation via mov SS or pop SS instructions. During the stack switch operation, the exceptions are deferred. An adjacent attacker can cause the service to crash or gain root privileges.

16) Integer overflow (CVE-ID: CVE-2018-6927)

The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists in the futex_requeue function due to integer overflow. A local attacker can trigger a negative wake or requeue value and cause the service to crash.

17) Memory corruption (CVE-ID: CVE-2018-7566)

The vulnerability allows a local attacker to write arbitrary files on the target system.

The weakness exists due to out-of-bounds write while ALSA sequencer core initializes the event pool on demand by invoking snd_seq_pool_init() when the first write happens and the pool is empty. A local attacker can trigger buffer overflow and use after free and reset the pool size manually via ioctl concurrently and write arbitrary files.

18) Memory leak (CVE-ID: CVE-2018-7757)

The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists in the drivers/scsi/libsas/sas_expander.c source code in the sas_smp_get_phy_events function due to memory leak. A local attacker can trigger memory corruption and cause the system to crash.

19) Privilege escalation (CVE-ID: CVE-2018-8822)

The vulnerability allows a local attacker to gain elevated privileges on the target system.

The weakness exists in the ncp_read_kernel function due to incorrect buffer length handling. A local attacker can submit specially crafted data from a malicious NCPFS server, trigger memory corruption and execute arbitrary code with root privileges.

20) Privilege escalation (CVE-ID: CVE-2018-8897)

The vulnerability allows a local attacker to gain elevated privileges on the target system.

The vulnerability exists due to improper implementation of Intel 64 and IA-32 Architectures Software Developer's Manual (SDM) on multiple system kernels, which results in an unexpected behavior for #DB exceptions that are deferred by MOV SS or POP SS. A local user can execute arbitrary code with elevated privileges.

Remediation

Install update from vendor's website.

References

• https://lists.opensuse.org/opensuse-security-announce/2018-05/msg00007.html