ACK: [SRU][Xenial][PULL] Updates for Spectre v1 (CVE-2017-5753)

[Stefan Bader]

On 10.04.19 14:00, Juerg Haefliger wrote:
> This pull request contains fix(es) for the following CVE(s):
>   CVE-2017-5753
> 
> Pull in the latest Spectre v1 fixes from mainline. All commits are either
> clean cherry-picks or simple backports (context adjustments only).
> 
> The changes are fairly trivial and non-intrusive (low risk) in that they
> sprinkle array_index_nospec() calls over different places where an array
> index is user controllable.
> 
> Compile-tested all supported architectures.
> 
> Signed-off-by: Juerg Haefliger <juergh at canonical.com>
> ---
> 
> The following changes since commit 4a18c9eb9b143743de8a54ffd31be81652d9ee93:
> 
>   Revert "module: Add retpoline tag to VERMAGIC" (2019-04-09 08:32:15 +0200)
> 
> are available in the Git repository at:
> 
>   git://git.launchpad.net/~juergh/+git/xenial-linux update-spectre-v1
> 
> for you to fetch changes up to 7b3e7388ac9296c2af6e025d1534ef4675d059aa:
> 
>   ALSA: seq: oss: Fix Spectre v1 vulnerability (2019-04-09 08:34:34 +0200)
> 
> ----------------------------------------------------------------
> Breno Leitao (1):
>       powerpc/ptrace: Mitigate potential Spectre v1
> 
> Gustavo A. R. Silva (4):
>       hwmon: (nct6775) Fix potential Spectre v1
>       ipmi: msghandler: Fix potential Spectre v1 vulnerabilities
>       ALSA: rawmidi: Fix potential Spectre v1 vulnerability
>       ALSA: seq: oss: Fix Spectre v1 vulnerability
> 
> Jeremy Cline (2):
>       net: socket: Fix potential spectre v1 gadget in sock_is_registered
>       net: sock_diag: Fix spectre v1 gadget in __sock_diag_cmd()
> 
> Jinbum Park (2):
>       pktcdvd: Fix possible Spectre-v1 for pkt_devs
>       mac80211_hwsim: Fix possible Spectre-v1 for hwsim_world_regdom_custom
> 
> Johannes Berg (1):
>       cfg80211: prevent speculation on cfg80211_classify8021d() return
> 
> Mark Rutland (2):
>       arm64: fix possible spectre-v1 in ptrace_hbp_get_event()
>       arm64: fix possible spectre-v1 write in ptrace_hbp_set_event()
> 
> Martin Schwidefsky (1):
>       s390/keyboard: sanitize array index in do_kdsk_ioctl
> 
> Masashi Honma (1):
>       nl80211: Fix possible Spectre-v1 for NL80211_TXRATE_HT
> 
> Mauro Carvalho Chehab (1):
>       media: dvb_ca_en50221: prevent using slot_info for Spectre attacs
> 
> Peter Zijlstra (1):
>       sched/autogroup: Fix possible Spectre-v1 indexing for sched_prio_to_weight[]
> 
> Thomas Gleixner (1):
>       posix-timers: Protect posix clock array access against speculation
> 
>  arch/arm64/kernel/ptrace.c              | 33 +++++++++++++++++++++------------
>  arch/powerpc/kernel/ptrace.c            |  8 +++++++-
>  drivers/block/pktcdvd.c                 |  3 +++
>  drivers/char/ipmi/ipmi_msghandler.c     |  6 ++++++
>  drivers/hwmon/nct6775.c                 |  2 ++
>  drivers/media/dvb-core/dvb_ca_en50221.c |  5 +++++
>  drivers/net/wireless/mac80211_hwsim.c   |  4 ++++
>  drivers/s390/char/keyboard.c            | 28 ++++++++++++++++------------
>  kernel/sched/auto_group.c               |  7 +++++--
>  kernel/time/posix-timers.c              | 11 ++++++++---
>  net/core/sock_diag.c                    |  2 ++
>  net/wireless/nl80211.c                  |  1 +
>  net/wireless/util.c                     | 33 +++++++++++++++++++++++----------
>  sound/core/rawmidi.c                    |  2 ++
>  sound/core/seq/oss/seq_oss_synth.c      |  7 ++++---
>  15 files changed, 109 insertions(+), 43 deletions(-)
> 
Acked-by: Stefan Bader <stefan.bader at canonical.com>

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