SUSE-SU-2019:14089-1: important: Security update for the Linux Kernel

Tue Jun 18 10:44:59 MDT 2019

   SUSE Security Update: Security update for the Linux Kernel
______________________________________________________________________________

Announcement ID:    SUSE-SU-2019:14089-1
Rating:             important
References:         #1110785 #1113769 #1119314 #1120326 #1120843 
                    #1120885 #1131295 #1131543 #1132374 #1132472 
                    #1132580 #1133188 #1134102 #1134729 #1134848 
                    #1137586 #923908 #939260 
Cross-References:   CVE-2014-9710 CVE-2018-17972 CVE-2019-11190
                    CVE-2019-11477 CVE-2019-11478 CVE-2019-11479
                    CVE-2019-11486 CVE-2019-11884 CVE-2019-5489

Affected Products:
                    SUSE Linux Enterprise Server 11-SP4-LTSS
                    SUSE Linux Enterprise Server 11-EXTRA
                    SUSE Linux Enterprise Debuginfo 11-SP4
______________________________________________________________________________

   An update that solves 9 vulnerabilities and has 9 fixes is
   now available.

Description:

   The SUSE Linux Enterprise 11 SP4 kernel version 3.0.101 was updated to
   receive various security and bugfixes.

   The following security bugs were fixed:

   - CVE-2019-11477: A sequence of SACKs may have been crafted such that one
     can trigger an integer overflow, leading to a kernel panic. (bsc#1137586)

   - CVE-2019-11478: It was possible to send a crafted sequence of SACKs
     which will fragment the TCP retransmission queue. An attacker may have
     been able to further exploit the fragmented queue to cause an expensive
     linked-list walk for subsequent SACKs received for that same TCP
     connection.

   - CVE-2019-11479: It was possible to send a crafted sequence of SACKs
     which will fragment the RACK send map. A remote attacker may be able to
     further exploit the fragmented send map to cause an expensive
     linked-list walk for subsequent SACKs received for that same TCP
     connection. This would have resulted in excess resource consumption due
     to low mss values.

   - CVE-2014-9710: The Btrfs implementation in the Linux kernel did not
     ensure that the visible xattr state is consistent with a requested
     replacement, which allowed local users to bypass intended ACL settings
     and gain privileges via standard filesystem operations (1) during an
     xattr-replacement time window, related to a race condition, or (2) after
     an xattr-replacement attempt that fails because the data did not fit
     (bnc#923908).

   - CVE-2019-5489: The mincore() implementation in mm/mincore.c in the Linux
     kernel allowed local attackers to observe page cache access patterns of
     other processes on the same system, potentially allowing sniffing of
     secret information. (Fixing this affects the output of the fincore
     program.) Limited remote exploitation may be possible, as demonstrated
     by latency differences in accessing public files from an Apache HTTP
     Server (bnc#1120843).

   - CVE-2019-11190: The Linux kernel allowed local users to bypass ASLR on
     setuid programs (such as /bin/su) because install_exec_creds() is called
     too late in load_elf_binary() in fs/binfmt_elf.c, and thus the
     ptrace_may_access() check has a race condition when reading
     /proc/pid/stat (bnc#1131543).

   - CVE-2018-17972: An issue was discovered in the proc_pid_stack function
     in fs/proc/base.c in the Linux kernel It did not ensure that only root
     may inspect the kernel stack of an arbitrary task, allowing a local
     attacker to exploit racy stack unwinding and leak kernel task stack
     contents (bnc#1110785).

   - CVE-2019-11884: The do_hidp_sock_ioctl function in
     net/bluetooth/hidp/sock.c in the Linux kernel allowed a local user to
     obtain potentially sensitive information from kernel stack memory via a
     HIDPCONNADD command, because a name field may not end with a '\0'
     character (bnc#1134848).

   - CVE-2019-11486: The Siemens R3964 line discipline driver in
     drivers/tty/n_r3964.c in the Linux kernel had multiple race conditions
     (bnc#1133188).

   The following non-security bugs were fixed:

   - cifs: fix uninitialized memory access (bsc#1120326).
   - kabi: drop LINUX_MIB_TCPWQUEUETOOBIG snmp counter (bsc#1137586).
   - kernel: Add CEX7 toleration support (bsc#1131295).
   - net: ipsec: fix a kernel oops caused by reentrant workqueue
     (bsc#1119314).
   - tcp: add tcp_min_snd_mss sysctl (bsc#1137586).
   - tcp: enforce tcp_min_snd_mss in tcp_mtu_probing() (bsc#1137586).
   - tcp: limit payload size of sacked skbs (bsc#1137586).
   - tcp: tcp_fragment() should apply sane memory limits (bsc#1137586).
   - x86/MCE: Handle "nosmt" offlining properly (bsc#1134729).
   - xfs: do not cache inodes read through bulkstat (bsc#1134102).

Special Instructions and Notes:

   Please reboot the system after installing this update.

Patch Instructions:

   To install this SUSE Security Update use the SUSE recommended installation methods
   like YaST online_update or "zypper patch".

   Alternatively you can run the command listed for your product:

   - SUSE Linux Enterprise Server 11-SP4-LTSS:

      zypper in -t patch slessp4-kernel-source-14089=1

   - SUSE Linux Enterprise Server 11-EXTRA:

      zypper in -t patch slexsp3-kernel-source-14089=1

   - SUSE Linux Enterprise Debuginfo 11-SP4:

      zypper in -t patch dbgsp4-kernel-source-14089=1

Package List:

   - SUSE Linux Enterprise Server 11-SP4-LTSS (i586 ppc64 s390x x86_64):

      kernel-default-3.0.101-108.95.2
      kernel-default-base-3.0.101-108.95.2
      kernel-default-devel-3.0.101-108.95.2
      kernel-source-3.0.101-108.95.1
      kernel-syms-3.0.101-108.95.1
      kernel-trace-3.0.101-108.95.2
      kernel-trace-base-3.0.101-108.95.2
      kernel-trace-devel-3.0.101-108.95.2

   - SUSE Linux Enterprise Server 11-SP4-LTSS (i586 x86_64):

      kernel-ec2-3.0.101-108.95.2
      kernel-ec2-base-3.0.101-108.95.2
      kernel-ec2-devel-3.0.101-108.95.2
      kernel-xen-3.0.101-108.95.2
      kernel-xen-base-3.0.101-108.95.2
      kernel-xen-devel-3.0.101-108.95.2

   - SUSE Linux Enterprise Server 11-SP4-LTSS (s390x):

      kernel-default-man-3.0.101-108.95.2

   - SUSE Linux Enterprise Server 11-SP4-LTSS (ppc64):

      kernel-bigmem-3.0.101-108.95.2
      kernel-bigmem-base-3.0.101-108.95.2
      kernel-bigmem-devel-3.0.101-108.95.2
      kernel-ppc64-3.0.101-108.95.2
      kernel-ppc64-base-3.0.101-108.95.2
      kernel-ppc64-devel-3.0.101-108.95.2

   - SUSE Linux Enterprise Server 11-SP4-LTSS (i586):

      kernel-pae-3.0.101-108.95.2
      kernel-pae-base-3.0.101-108.95.2
      kernel-pae-devel-3.0.101-108.95.2

   - SUSE Linux Enterprise Server 11-EXTRA (i586 ia64 ppc64 s390x x86_64):

      kernel-default-extra-3.0.101-108.95.2

   - SUSE Linux Enterprise Server 11-EXTRA (i586 x86_64):

      kernel-xen-extra-3.0.101-108.95.2

   - SUSE Linux Enterprise Server 11-EXTRA (x86_64):

      kernel-trace-extra-3.0.101-108.95.2

   - SUSE Linux Enterprise Server 11-EXTRA (ppc64):

      kernel-ppc64-extra-3.0.101-108.95.2

   - SUSE Linux Enterprise Server 11-EXTRA (i586):

      kernel-pae-extra-3.0.101-108.95.2

   - SUSE Linux Enterprise Debuginfo 11-SP4 (i586 ppc64 s390x x86_64):

      kernel-default-debuginfo-3.0.101-108.95.2
      kernel-default-debugsource-3.0.101-108.95.2
      kernel-trace-debuginfo-3.0.101-108.95.2
      kernel-trace-debugsource-3.0.101-108.95.2

   - SUSE Linux Enterprise Debuginfo 11-SP4 (i586 s390x x86_64):

      kernel-default-devel-debuginfo-3.0.101-108.95.2
      kernel-trace-devel-debuginfo-3.0.101-108.95.2

   - SUSE Linux Enterprise Debuginfo 11-SP4 (i586 x86_64):

      kernel-ec2-debuginfo-3.0.101-108.95.2
      kernel-ec2-debugsource-3.0.101-108.95.2
      kernel-xen-debuginfo-3.0.101-108.95.2
      kernel-xen-debugsource-3.0.101-108.95.2
      kernel-xen-devel-debuginfo-3.0.101-108.95.2

   - SUSE Linux Enterprise Debuginfo 11-SP4 (ppc64):

      kernel-bigmem-debuginfo-3.0.101-108.95.2
      kernel-bigmem-debugsource-3.0.101-108.95.2
      kernel-ppc64-debuginfo-3.0.101-108.95.2
      kernel-ppc64-debugsource-3.0.101-108.95.2

   - SUSE Linux Enterprise Debuginfo 11-SP4 (i586):

      kernel-pae-debuginfo-3.0.101-108.95.2
      kernel-pae-debugsource-3.0.101-108.95.2
      kernel-pae-devel-debuginfo-3.0.101-108.95.2

References:

   https://www.suse.com/security/cve/CVE-2014-9710.html
   https://www.suse.com/security/cve/CVE-2018-17972.html
   https://www.suse.com/security/cve/CVE-2019-11190.html
   https://www.suse.com/security/cve/CVE-2019-11477.html
   https://www.suse.com/security/cve/CVE-2019-11478.html
   https://www.suse.com/security/cve/CVE-2019-11479.html
   https://www.suse.com/security/cve/CVE-2019-11486.html
   https://www.suse.com/security/cve/CVE-2019-11884.html
   https://www.suse.com/security/cve/CVE-2019-5489.html
   https://bugzilla.suse.com/1110785
   https://bugzilla.suse.com/1113769
   https://bugzilla.suse.com/1119314
   https://bugzilla.suse.com/1120326
   https://bugzilla.suse.com/1120843
   https://bugzilla.suse.com/1120885
   https://bugzilla.suse.com/1131295
   https://bugzilla.suse.com/1131543
   https://bugzilla.suse.com/1132374
   https://bugzilla.suse.com/1132472
   https://bugzilla.suse.com/1132580
   https://bugzilla.suse.com/1133188
   https://bugzilla.suse.com/1134102
   https://bugzilla.suse.com/1134729
   https://bugzilla.suse.com/1134848
   https://bugzilla.suse.com/1137586
   https://bugzilla.suse.com/923908
   https://bugzilla.suse.com/939260