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From: Slackware Security Team <security@slackware.com>
To: slackware-security@slackware.com
Subject: [slackware-security] Slackware 14.1 kernel (SSA:2017-180-01)
Date: Thu, 29 Jun 2017 14:34:21 -0700 (PDT)
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[slackware-security]  Slackware 14.1 kernel (SSA:2017-180-01)

New kernel packages are available for Slackware 14.1 to fix security issues.


Here are the details from the Slackware 14.1 ChangeLog:
+--------------------------+
patches/packages/linux-3.10.107/*:  Upgraded.
  This kernel fixes two "Stack Clash" vulnerabilities reported by Qualys.
  The first issue may allow attackers to execute arbitrary code with elevated
  privileges. Failed attack attempts will likely result in denial-of-service
  conditions. The second issue can be exploited to bypass certain security
  restrictions and perform unauthorized actions.
  Be sure to upgrade your initrd after upgrading the kernel packages.
  If you use lilo to boot your machine, be sure lilo.conf points to the correct
  kernel and initrd and run lilo as root to update the bootloader.
  If you use elilo to boot your machine, you should run eliloconfig to copy the
  kernel and initrd to the EFI System Partition.
  For more information, see:
    https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-1000364
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-1000365
  (* Security fix *)
  In addition, a patch is included and preapplied to guard against other == sk
  in unix_dgram_sendmsg. This bug has been known to cause Samba related stalls.
  Thanks to Ben Stern for the bug report.
+--------------------------+


Where to find the new packages:
+-----------------------------+

Thanks to the friendly folks at the OSU Open Source Lab
(http://osuosl.org) for donating FTP and rsync hosting
to the Slackware project!  :-)

Also see the "Get Slack" section on http://slackware.com for
additional mirror sites near you.

Updated packages for Slackware 14.1:
ftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/linux-3.10.107/kernel-generic-3.10.107-i486-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/linux-3.10.107/kernel-generic-smp-3.10.107_smp-i686-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/linux-3.10.107/kernel-headers-3.10.107_smp-x86-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/linux-3.10.107/kernel-huge-3.10.107-i486-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/linux-3.10.107/kernel-huge-smp-3.10.107_smp-i686-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/linux-3.10.107/kernel-modules-3.10.107-i486-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/linux-3.10.107/kernel-modules-smp-3.10.107_smp-i686-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/linux-3.10.107/kernel-source-3.10.107_smp-noarch-1.txz

Updated packages for Slackware x86_64 14.1:
ftp://ftp.slackware.com/pub/slackware/slackware64-14.1/patches/packages/linux-3.10.107/kernel-generic-3.10.107-x86_64-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-14.1/patches/packages/linux-3.10.107/kernel-headers-3.10.107-x86-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-14.1/patches/packages/linux-3.10.107/kernel-huge-3.10.107-x86_64-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-14.1/patches/packages/linux-3.10.107/kernel-modules-3.10.107-x86_64-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-14.1/patches/packages/linux-3.10.107/kernel-source-3.10.107-noarch-1.txz


MD5 signatures:
+-------------+

Slackware 14.1 packages:
7a3dc2cd4c1067984d0cbc5e257eb0f8  kernel-generic-3.10.107-i486-1.txz
1ec7b64fec890841337dcb0b85c4189e  kernel-generic-smp-3.10.107_smp-i686-1.txz
42be9d29509261878e11ee142ddc5835  kernel-headers-3.10.107_smp-x86-1.txz
c68758ab09860d8d9585eff27aa7b341  kernel-huge-3.10.107-i486-1.txz
1f27891b34076dfe3b1f1aa56c820017  kernel-huge-smp-3.10.107_smp-i686-1.txz
9b2f9044654c44b7fdaaf1dfa86c1f2b  kernel-modules-3.10.107-i486-1.txz
68835ec8daffd1c101651cb1213917ea  kernel-modules-smp-3.10.107_smp-i686-1.txz
c6b18ccd52ef37879f4791557b1350d1  kernel-source-3.10.107_smp-noarch-1.txz

Slackware x86_64 14.1 packages:
c363284f807203eb8fedfc0db35ab9c3  kernel-generic-3.10.107-x86_64-1.txz
7101db4ec1cbeb294f41fb65709fb030  kernel-headers-3.10.107-x86-1.txz
fef8c622ea91dcaeae915bf11de54aa1  kernel-huge-3.10.107-x86_64-1.txz
4985fb9284200278dd57f8ce14bc1670  kernel-modules-3.10.107-x86_64-1.txz
fdced05a099ab697bd91e75118163320  kernel-source-3.10.107-noarch-1.txz


Installation instructions:
+------------------------+

Upgrade the packages as root:
# upgradepkg kernel-*.txz

If you are using an initrd, you'll need to rebuild it.

For a 32-bit SMP machine, use this command (substitute the appropriate
kernel version if you are not running Slackware 14.2):
# /usr/share/mkinitrd/mkinitrd_command_generator.sh -k 3.10.107-smp | bash

For a 64-bit machine, or a 32-bit uniprocessor machine, use this command
(substitute the appropriate kernel version if you are not running
Slackware 14.2):
# /usr/share/mkinitrd/mkinitrd_command_generator.sh -k 3.10.107 | bash

Please note that "uniprocessor" has to do with the kernel you are running,
not with the CPU.  Most systems should run the SMP kernel (if they can)
regardless of the number of cores the CPU has.  If you aren't sure which
kernel you are running, run "uname -a".  If you see SMP there, you are
running the SMP kernel and should use the 3.10.107-smp version when running
mkinitrd_command_generator.  Note that this is only for 32-bit -- 64-bit
systems should always use 3.10.107 as the version.

If you are using lilo or elilo to boot the machine, you'll need to ensure
that the machine is properly prepared before rebooting.

If using LILO:
By default, lilo.conf contains an image= line that references a symlink
that always points to the correct kernel.  No editing should be required
unless your machine uses a custom lilo.conf.  If that is the case, be sure
that the image= line references the correct kernel file.  Either way,
you'll need to run "lilo" as root to reinstall the boot loader.

If using elilo:
Ensure that the /boot/vmlinuz symlink is pointing to the kernel you wish
to use, and then run eliloconfig to update the EFI System Partition.


+-----+

Slackware Linux Security Team
http://slackware.com/gpg-key
security@slackware.com

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