openSUSE Security Update : the Linux Kernel (openSUSE-2016-1076)

This script is Copyright (C) 2016 Tenable Network Security, Inc.


Synopsis :

The remote openSUSE host is missing a security update.

Description :

The openSUSE Leap 42.1 kernel was updated to 4.1.31 to receive various
security and bugfixes.

The following security bugs were fixed :

- CVE-2016-2847: fs/pipe.c in the Linux kernel did not
limit the amount of unread data in pipes, which allowed
local users to cause a denial of service (memory
consumption) by creating many pipes with non-default
sizes (bnc#970948).

- CVE-2016-3134: The netfilter subsystem in the Linux
kernel did not validate certain offset fields, which
allowed local users to gain privileges or cause a denial
of service (heap memory corruption) via an
IPT_SO_SET_REPLACE setsockopt call (bnc#971126).

- CVE-2016-3156: The IPv4 implementation in the Linux
kernel mishandled destruction of device objects, which
allowed guest OS users to cause a denial of service
(host OS networking outage) by arranging for a large
number of IP addresses (bnc#971360).

- CVE-2016-4485: The llc_cmsg_rcv function in
net/llc/af_llc.c in the Linux kernel did not initialize
a certain data structure, which allowed attackers to
obtain sensitive information from kernel stack memory by
reading a message (bnc#978821).

- CVE-2016-4486: The rtnl_fill_link_ifmap function in
net/core/rtnetlink.c in the Linux kernel did not
initialize a certain data structure, which allowed local
users to obtain sensitive information from kernel stack
memory by reading a Netlink message (bnc#978822).

- CVE-2016-4557: The replace_map_fd_with_map_ptr function
in kernel/bpf/verifier.c in the Linux kernel did not
properly maintain an fd data structure, which allowed
local users to gain privileges or cause a denial of
service (use-after-free) via crafted BPF instructions
that reference an incorrect file descriptor
(bnc#979018).

- CVE-2016-4580: The x25_negotiate_facilities function in
net/x25/x25_facilities.c in the Linux kernel did not
properly initialize a certain data structure, which
allowed attackers to obtain sensitive information from
kernel stack memory via an X.25 Call Request
(bnc#981267).

- CVE-2016-4805: Use-after-free vulnerability in
drivers/net/ppp/ppp_generic.c in the Linux kernel
allowed local users to cause a denial of service (memory
corruption and system crash, or spinlock) or possibly
have unspecified other impact by removing a network
namespace, related to the ppp_register_net_channel and
ppp_unregister_channel functions (bnc#980371).

- CVE-2016-4951: The tipc_nl_publ_dump function in
net/tipc/socket.c in the Linux kernel did not verify
socket existence, which allowed local users to cause a
denial of service (NULL pointer dereference and system
crash) or possibly have unspecified other impact via a
dumpit operation (bnc#981058).

- CVE-2015-8787: The nf_nat_redirect_ipv4 function in
net/netfilter/nf_nat_redirect.c in the Linux kernel
allowed remote attackers to cause a denial of service
(NULL pointer dereference and system crash) or possibly
have unspecified other impact by sending certain IPv4
packets to an incompletely configured interface, a
related issue to CVE-2003-1604 (bnc#963931).

- CVE-2016-4569: The snd_timer_user_params function in
sound/core/timer.c in the Linux kernel did not
initialize a certain data structure, which allowed local
users to obtain sensitive information from kernel stack
memory via crafted use of the ALSA timer interface
(bnc#979213).

- CVE-2016-4578: sound/core/timer.c in the Linux kernel
did not initialize certain r1 data structures, which
allowed local users to obtain sensitive information from
kernel stack memory via crafted use of the ALSA timer
interface, related to the (1) snd_timer_user_ccallback
and (2) snd_timer_user_tinterrupt functions
(bnc#979879).

- CVE-2016-6828: A use after free in
tcp_xmit_retransmit_queue() was fixed that could be used
by local attackers to crash the kernel (bsc#994296).

- CVE-2016-6480: Race condition in the ioctl_send_fib
function in drivers/scsi/aacraid/commctrl.c in the Linux
kernel allowed local users to cause a denial of service
(out-of-bounds access or system crash) by changing a
certain size value, aka a 'double fetch' vulnerability
(bnc#991608).

- CVE-2016-4998: The IPT_SO_SET_REPLACE setsockopt
implementation in the netfilter subsystem in the Linux
kernel allowed local users to cause a denial of service
(out-of-bounds read) or possibly obtain sensitive
information from kernel heap memory by leveraging
in-container root access to provide a crafted offset
value that leads to crossing a ruleset blob boundary
(bnc#986362 986365 990058).

- CVE-2016-5696: net/ipv4/tcp_input.c in the Linux kernel
did not properly determine the rate of challenge ACK
segments, which made it easier for man-in-the-middle
attackers to hijack TCP sessions via a blind in-window
attack (bnc#989152).

- CVE-2016-1237: nfsd in the Linux kernel allowed local
users to bypass intended file-permission restrictions by
setting a POSIX ACL, related to nfs2acl.c, nfs3acl.c,
and nfs4acl.c (bnc#986570).

The following non-security bugs were fixed :

- AF_VSOCK: Shrink the area influenced by prepare_to_wait
(bsc#994520).

- KVM: arm/arm64: Handle forward time correction
gracefully (bnc#974266).

- Linux 4.1.29. Refreshed patch:
patches.xen/xen3-fixup-xen Deleted patches:
patches.fixes/0001-Revert-ecryptfs-forbid-opening-files-
without-mmap-ha.patch
patches.fixes/0001-ecryptfs-don-t-allow-mmap-when-the-lo
wer-file-system.patch
patches.rpmify/Revert-mm-swap.c-flush-lru-pvecs-on-compo
und-page-ar
patches.rpmify/Revert-powerpc-Update-TM-user-feature-bit
s-in-scan_f

- Revert 'mm/swap.c: flush lru pvecs on compound page
arrival' (boo#989084).

- Revert 'powerpc: Update TM user feature bits in
scan_features()'. Fix the build error of 4.1.28 on ppc.

- Revive i8042_check_power_owner() for 4.1.31 kabi fix.

- USB: OHCI: Do not mark EDs as ED_OPER if scheduling
fails (bnc#987886).

- USB: validate wMaxPacketValue entries in endpoint
descriptors (bnc#991665).

- Update
patches.fixes/0002-nfsd-check-permissions-when-setting-A
CLs.patch (bsc#986570 CVE-2016-1237).

- Update
patches.fixes/0001-posix_acl-Add-set_posix_acl.patch
(bsc#986570 CVE-2016-1237).

- netfilter: x_tables: fix 4.1 stable backport
(bsc#989176).

- nfsd: check permissions when setting ACLs (bsc#986570).

- posix_acl: Add set_posix_acl (bsc#986570).

- ppp: defer netns reference release for ppp channel
(bsc#980371).

- series.conf: Move a kABI patch to its own section

- supported.conf: enable i2c-designware driver
(bsc#991110)

- tcp: enable per-socket rate limiting of all 'challenge
acks' (bsc#989152).

See also :

https://bugzilla.opensuse.org/show_bug.cgi?id=963931
https://bugzilla.opensuse.org/show_bug.cgi?id=970948
https://bugzilla.opensuse.org/show_bug.cgi?id=971126
https://bugzilla.opensuse.org/show_bug.cgi?id=971360
https://bugzilla.opensuse.org/show_bug.cgi?id=974266
https://bugzilla.opensuse.org/show_bug.cgi?id=978821
https://bugzilla.opensuse.org/show_bug.cgi?id=978822
https://bugzilla.opensuse.org/show_bug.cgi?id=979018
https://bugzilla.opensuse.org/show_bug.cgi?id=979213
https://bugzilla.opensuse.org/show_bug.cgi?id=979879
https://bugzilla.opensuse.org/show_bug.cgi?id=980371
https://bugzilla.opensuse.org/show_bug.cgi?id=981058
https://bugzilla.opensuse.org/show_bug.cgi?id=981267
https://bugzilla.opensuse.org/show_bug.cgi?id=986362
https://bugzilla.opensuse.org/show_bug.cgi?id=986365
https://bugzilla.opensuse.org/show_bug.cgi?id=986570
https://bugzilla.opensuse.org/show_bug.cgi?id=987886
https://bugzilla.opensuse.org/show_bug.cgi?id=989084
https://bugzilla.opensuse.org/show_bug.cgi?id=989152
https://bugzilla.opensuse.org/show_bug.cgi?id=989176
https://bugzilla.opensuse.org/show_bug.cgi?id=990058
https://bugzilla.opensuse.org/show_bug.cgi?id=991110
https://bugzilla.opensuse.org/show_bug.cgi?id=991608
https://bugzilla.opensuse.org/show_bug.cgi?id=991665
https://bugzilla.opensuse.org/show_bug.cgi?id=994296
https://bugzilla.opensuse.org/show_bug.cgi?id=994520

Solution :

Update the affected the Linux Kernel packages.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)
Public Exploit Available : true

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