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SuseOPENSUSE-SU-2016:2290-1
HistorySep 12, 2016 - 2:11 p.m.

Security update for the Linux Kernel (important)

2016-09-1214:11:24
lists.opensuse.org
25

0.047 Low

EPSS

Percentile

91.7%

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.pat
    ch
    patches.fixes/0001-ecryptfs-don-t-allow-mmap-when-the-lower-file-system.pat
    ch patches.rpmify/Revert-mm-swap.c-flush-lru-pvecs-on-compound-page-ar
    patches.rpmify/Revert-powerpc-Update-TM-user-feature-bits-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-ACLs.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).
How to protect your server from attacks?

0.047 Low

EPSS

Percentile

91.7%

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