openSUSE Security Update : the Linux Kernel (openSUSE-2016-1212) (Dirty COW)

This script is Copyright (C) 2016-2017 Tenable Network Security, Inc.


Synopsis :

The remote openSUSE host is missing a security update.

Description :

The openSUSE Leap 42.1 kernel was updated to 4.1.34, fixing bugs and
security issues.

The following security bugs were fixed :

- CVE-2016-5195: A local privilege escalation using
MAP_PRIVATE was fixed, which is reportedly exploited in
the wild (bsc#1004418).

- CVE-2016-8658: Stack-based buffer overflow in the
brcmf_cfg80211_start_ap function in
drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg8021
1.c in the Linux kernel allowed local users to cause a
denial of service (system crash) or possibly have
unspecified other impact via a long SSID Information
Element in a command to a Netlink socket (bnc#1004462).

- CVE-2016-7039: The IP stack in the Linux kernel allowed
remote attackers to cause a denial of service (stack
consumption and panic) or possibly have unspecified
other impact by triggering use of the GRO path for large
crafted packets, as demonstrated by packets that contain
only VLAN headers, a related issue to CVE-2016-8666
(bnc#1001486).

- CVE-2016-7425: The arcmsr_iop_message_xfer function in
drivers/scsi/arcmsr/arcmsr_hba.c in the Linux kernel did
not restrict a certain length field, which allowed local
users to gain privileges or cause a denial of service
(heap-based buffer overflow) via an
ARCMSR_MESSAGE_WRITE_WQBUFFER control code (bnc#999932).

The following non-security bugs were fixed :

- 9p: use file_dentry() (bsc#1005101).

- af_unix: Do not set err in unix_stream_read_generic
unless there was an error (bsc#1005101).

- alsa: hda - Fix superfluous HDMI jack repoll
(bsc#1005101).

- alsa: hda - Turn off loopback mixing as default
(bsc#1001462).

- apparmor: add missing id bounds check on dfa
verification (bsc#1000304).

- apparmor: check that xindex is in trans_table bounds
(bsc#1000304).

- apparmor: do not check for vmalloc_addr if kvzalloc()
failed (bsc#1000304).

- apparmor: do not expose kernel stack (bsc#1000304).

- apparmor: ensure the target profile name is always
audited (bsc#1000304).

- apparmor: exec should not be returning ENOENT when it
denies (bsc#1000304).

- apparmor: fix audit full profile hname on successful
load (bsc#1000304).

- apparmor: fix change_hat not finding hat after policy
replacement (bsc#1000287).

- apparmor: fix disconnected bind mnts reconnection
(bsc#1000304).

- apparmor: fix log failures for all profiles in a set
(bsc#1000304).

- apparmor: fix module parameters can be changed after
policy is locked (bsc#1000304).

- apparmor: fix oops in profile_unpack() when policy_db is
not present (bsc#1000304).

- apparmor: fix put() parent ref after updating the active
ref (bsc#1000304).

- apparmor: fix refcount bug in profile replacement
(bsc#1000304).

- apparmor: fix refcount race when finding a child profile
(bsc#1000304).

- apparmor: fix replacement bug that adds new child to old
parent (bsc#1000304).

- apparmor: fix uninitialized lsm_audit member
(bsc#1000304).

- apparmor: fix update the mtime of the profile file on
replacement (bsc#1000304).

- apparmor: internal paths should be treated as
disconnected (bsc#1000304).

- apparmor: use list_next_entry instead of list_entry_next
(bsc#1000304).

- arm: orion5x: Fix legacy get_irqnr_and_base
(bsc#1005101).

- batman-adv: Fix memory leak on tt add with invalid vlan
(bsc#1005101).

- batman-adv: replace WARN with rate limited output on
non-existing VLAN (bsc#1005101).

- blacklist.conf: add some commits (bsc#1005101)

- blacklist.conf: add unaplicable IB/uverbs commit
(bsc#1005101)

- blacklist.conf: Blacklist unsupported architectures

- blkfront: fix an error path memory leak (luckily none so
far).

- blktap2: eliminate deadlock potential from shutdown path
(bsc#909994).

- blktap2: eliminate race from deferred work queue
handling (bsc#911687).

- btrfs: ensure that file descriptor used with subvol
ioctls is a dir (bsc#999600).

- cdc-acm: added sanity checking for probe() (bsc#993891).

- cgroup: add seq_file forward declaration for struct
cftype (bsc#1005101).

- do 'fold checks into iterate_and_advance()' right
(bsc#972460).

- drm/i915: Wait up to 3ms for the pcu to ack the cdclk
change request on SKL (bsc#1005101).

- drm/rockchip: unset pgoff when mmap'ing gems
(bsc#1005101).

- fold checks into iterate_and_advance() (bsc#972460).

- fs/cifs: cifs_get_root shouldn't use path with tree name
(bsc#963655, bsc#979681, bsc#1000907).

- fs/cifs: Compare prepaths when comparing superblocks
(bsc#799133).

- fs/cifs: Fix memory leaks in cifs_do_mount()
(bsc#799133).

- fs/cifs: Fix regression which breaks DFS mounting
(bsc#799133).

- fs/cifs: Move check for prefix path to within
cifs_get_root() (bsc#799133).

- hid: multitouch: force retrieving of Win8 signature blob
(bsc#1005101).

- input: ALPS - add touchstick support for SS5 hardware
(bsc#987703).

- input: ALPS - allow touchsticks to report pressure
(bsc#987703).

- input: ALPS - handle 0-pressure 1F events (bsc#987703).

- input: ALPS - set DualPoint flag for 74 03 28 devices
(bsc#987703).

- ipip: Properly mark ipip GRO packets as encapsulated
(bsc#1001486).

- ipv6: suppress sparse warnings in IP6_ECN_set_ce()
(bsc#1005101).

- kabi: hide name change of napi_gro_cb::udp_mark
(bsc#1001486).

- kaweth: fix firmware download (bsc#993890).

- kaweth: fix oops upon failed memory allocation
(bsc#993890).

- kvm: x86: only channel 0 of the i8254 is linked to the
HPET (bsc#1005101).

- memcg: fix thresholds for 32b architectures
(bsc#1005101).

- msi-x: fix an error path (luckily none so far).

- netback: fix flipping mode (bsc#996664).

- netback: fix flipping mode (bsc#996664).

- netem: fix a use after free (bsc#1005101).

- net: fix warnings in 'make htmldocs' by moving macro
definition out of field declaration (bsc#1005101).

- netfront: linearize SKBs requiring too many slots
(bsc#991247).

- netlink: not trim skb for mmaped socket when dump
(bsc#1005101).

- net_sched: fix pfifo_head_drop behavior vs backlog
(bsc#1005101).

- net_sched: keep backlog updated with qlen (bsc#1005101).

- nfs: use file_dentry() (bsc#1005101).

- ovl: fix open in stacked overlay (bsc#1005101).

- pci: Prevent out of bounds access in numa_node override
(bsc#1005101).

- perf/core: Do not leak event in the syscall error path
(bsc#1005101).

- perf: Fix PERF_EVENT_IOC_PERIOD deadlock (bsc#1005101).

- Revive iov_iter_fault_in_multipages_readable() for
4.1.34.

- sch_drr: update backlog as well (bsc#1005101).

- sch_hfsc: always keep backlog updated (bsc#1005101).

- sch_prio: update backlog as well (bsc#1005101).

- sch_qfq: keep backlog updated with qlen (bsc#1005101).

- sch_red: update backlog as well (bsc#1005101).

- sch_sfb: keep backlog updated with qlen (bsc#1005101).

- sch_tbf: update backlog as well (bsc#1005101).

- tpm: fix: return rc when devm_add_action() fails
(bsc#1005101).

- tunnels: Do not apply GRO to multiple layers of
encapsulation (bsc#1001486).

- Update blacklisting documentation to contain
path-blacklisting

- usb: fix typo in wMaxPacketSize validation (bsc#991665).

- usb: hub: Fix auto-remount of safely removed or ejected
USB-3 devices (bsc#922634).

- x86/LDT: Print the real LDT base address (bsc#1005101).

- x86/PCI: Mark Broadwell-EP Home Agent 1 as having
non-compliant BARs (bsc#1005101).

- xenbus: do not bail early from
xenbus_dev_request_and_reply() (luckily none so far).

- xenbus: inspect the correct type in
xenbus_dev_request_and_reply().

- xen: Fix refcnt regression in xen netback introduced by
changes made for bug#881008 (bnc#978094)

- xen: Linux 4.1.28.

See also :

https://bugzilla.opensuse.org/show_bug.cgi?id=1000287
https://bugzilla.opensuse.org/show_bug.cgi?id=1000304
https://bugzilla.opensuse.org/show_bug.cgi?id=1000907
https://bugzilla.opensuse.org/show_bug.cgi?id=1001462
https://bugzilla.opensuse.org/show_bug.cgi?id=1001486
https://bugzilla.opensuse.org/show_bug.cgi?id=1004418
https://bugzilla.opensuse.org/show_bug.cgi?id=1004462
https://bugzilla.opensuse.org/show_bug.cgi?id=1005101
https://bugzilla.opensuse.org/show_bug.cgi?id=799133
https://bugzilla.opensuse.org/show_bug.cgi?id=881008
https://bugzilla.opensuse.org/show_bug.cgi?id=909994
https://bugzilla.opensuse.org/show_bug.cgi?id=911687
https://bugzilla.opensuse.org/show_bug.cgi?id=922634
https://bugzilla.opensuse.org/show_bug.cgi?id=963655
https://bugzilla.opensuse.org/show_bug.cgi?id=972460
https://bugzilla.opensuse.org/show_bug.cgi?id=978094
https://bugzilla.opensuse.org/show_bug.cgi?id=979681
https://bugzilla.opensuse.org/show_bug.cgi?id=987703
https://bugzilla.opensuse.org/show_bug.cgi?id=991247
https://bugzilla.opensuse.org/show_bug.cgi?id=991665
https://bugzilla.opensuse.org/show_bug.cgi?id=993890
https://bugzilla.opensuse.org/show_bug.cgi?id=993891
https://bugzilla.opensuse.org/show_bug.cgi?id=996664
https://bugzilla.opensuse.org/show_bug.cgi?id=999600
https://bugzilla.opensuse.org/show_bug.cgi?id=999932

Solution :

Update the affected the Linux Kernel packages.

Risk factor :

High / CVSS Base Score : 7.8
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C)
Public Exploit Available : true

Family: SuSE Local Security Checks

Nessus Plugin ID: 94219 ()

Bugtraq ID:

CVE ID: CVE-2016-5195
CVE-2016-7039
CVE-2016-7425
CVE-2016-8658
CVE-2016-8666

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