Security update for the Linux Kernel

SUSE Security Update: Security update for the Linux Kernel
Announcement ID: SUSE-SU-2018:3618-1
Rating: important
References: #1099922 #1102870 #1106095 #1107829 #1108227 #1109967 #1110247 #1113337 #905299
Cross-References: CVE-2018-12896 CVE-2018-14617 CVE-2018-14633 CVE-2018-16276
Affected Products:
  • SUSE Linux Enterprise Server 11-SP3-LTSS
  • SUSE Linux Enterprise Server 11-EXTRA
  • SUSE Linux Enterprise Point of Sale 11-SP3
  • SUSE Linux Enterprise Debuginfo 11-SP3

An update that solves four vulnerabilities and has 5 fixes is now available.

Description:



The SUSE Linux Enterprise 11 SP3 LTSS kernel was updated to receive various security and bugfixes.
The following security bugs were fixed:

  • CVE-2018-14633: A security flaw was found in the chap_server_compute_md5() function in the ISCSI target code in a way an authentication request from an ISCSI initiator is processed. An unauthenticated remote attacker can cause a stack buffer overflow and smash up to 17 bytes of the stack. The attack requires the iSCSI target to be enabled on the victim host. Depending on how the target's code was built (i.e. depending on a compiler, compile flags and hardware architecture) an attack may lead to a system crash and thus to a denial-of-service or possibly to a non-authorized access to data exported by an iSCSI target. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is highly unlikely. (bnc#1107829).
  • CVE-2018-14617: There is a NULL pointer dereference and panic in hfsplus_lookup() in fs/hfsplus/dir.c when opening a file (that is purportedly a hard link) in an hfs+ filesystem that has malformed catalog data, and is mounted read-only without a metadata directory (bnc#1102870).
  • CVE-2018-16276: An issue was discovered in yurex_read in drivers/usb/misc/yurex.c where local attackers could use user access read/writes with incorrect bounds checking in the yurex USB driver to crash the kernel or potentially escalate privileges (bnc#1106095).
  • CVE-2018-12896: An Integer Overflow in kernel/time/posix-timers.c in the POSIX timer code is caused by the way the overrun accounting works. Depending on interval and expiry time values, the overrun can be larger than INT_MAX, but the accounting is int based. This basically made the accounting values, which are visible to user space via timer_getoverrun(2) and siginfo::si_overrun, random. For example, a local user can cause a denial of service (signed integer overflow) via crafted mmap, futex, timer_create, and timer_settime system calls (bnc#1099922).

The following non-security bugs were fixed:
  • net: fix neighbours after MAC change (bnc#905299).
  • powerpc: Fix smp_mb__before_spinlock() (bsc#1110247).
  • x86/fpu: Do not do __thread_fpu_end() if use_eager_fpu() (bnc#1109967).
  • x86/fpu: fix signal handling with eager FPU switching (ia32) (bsc#1108227).
  • retpoline: Introduce start/end markers of indirect thunk (bsc#1113337).

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-SP3-LTSS:
    zypper in -t patch slessp3-kernel-source-13855=1
  • SUSE Linux Enterprise Server 11-EXTRA:
    zypper in -t patch slexsp3-kernel-source-13855=1
  • SUSE Linux Enterprise Point of Sale 11-SP3:
    zypper in -t patch sleposp3-kernel-source-13855=1
  • SUSE Linux Enterprise Debuginfo 11-SP3:
    zypper in -t patch dbgsp3-kernel-source-13855=1

Package List:

  • SUSE Linux Enterprise Server 11-SP3-LTSS (i586 s390x x86_64):
    • kernel-default-3.0.101-0.47.106.56.1
    • kernel-default-base-3.0.101-0.47.106.56.1
    • kernel-default-devel-3.0.101-0.47.106.56.1
    • kernel-source-3.0.101-0.47.106.56.1
    • kernel-syms-3.0.101-0.47.106.56.1
    • kernel-trace-3.0.101-0.47.106.56.1
    • kernel-trace-base-3.0.101-0.47.106.56.1
    • kernel-trace-devel-3.0.101-0.47.106.56.1
  • SUSE Linux Enterprise Server 11-SP3-LTSS (i586 x86_64):
    • kernel-ec2-3.0.101-0.47.106.56.1
    • kernel-ec2-base-3.0.101-0.47.106.56.1
    • kernel-ec2-devel-3.0.101-0.47.106.56.1
    • kernel-xen-3.0.101-0.47.106.56.1
    • kernel-xen-base-3.0.101-0.47.106.56.1
    • kernel-xen-devel-3.0.101-0.47.106.56.1
  • SUSE Linux Enterprise Server 11-SP3-LTSS (x86_64):
    • kernel-bigsmp-3.0.101-0.47.106.56.1
    • kernel-bigsmp-base-3.0.101-0.47.106.56.1
    • kernel-bigsmp-devel-3.0.101-0.47.106.56.1
  • SUSE Linux Enterprise Server 11-SP3-LTSS (s390x):
    • kernel-default-man-3.0.101-0.47.106.56.1
  • SUSE Linux Enterprise Server 11-SP3-LTSS (i586):
    • kernel-pae-3.0.101-0.47.106.56.1
    • kernel-pae-base-3.0.101-0.47.106.56.1
    • kernel-pae-devel-3.0.101-0.47.106.56.1
  • SUSE Linux Enterprise Server 11-EXTRA (i586 ia64 ppc64 s390x x86_64):
    • kernel-default-extra-3.0.101-0.47.106.56.1
  • SUSE Linux Enterprise Server 11-EXTRA (i586 x86_64):
    • kernel-xen-extra-3.0.101-0.47.106.56.1
  • SUSE Linux Enterprise Server 11-EXTRA (x86_64):
    • kernel-bigsmp-extra-3.0.101-0.47.106.56.1
    • kernel-trace-extra-3.0.101-0.47.106.56.1
  • SUSE Linux Enterprise Server 11-EXTRA (ppc64):
    • kernel-ppc64-extra-3.0.101-0.47.106.56.1
  • SUSE Linux Enterprise Server 11-EXTRA (i586):
    • kernel-pae-extra-3.0.101-0.47.106.56.1
  • SUSE Linux Enterprise Point of Sale 11-SP3 (i586):
    • kernel-default-3.0.101-0.47.106.56.1
    • kernel-default-base-3.0.101-0.47.106.56.1
    • kernel-default-devel-3.0.101-0.47.106.56.1
    • kernel-ec2-3.0.101-0.47.106.56.1
    • kernel-ec2-base-3.0.101-0.47.106.56.1
    • kernel-ec2-devel-3.0.101-0.47.106.56.1
    • kernel-pae-3.0.101-0.47.106.56.1
    • kernel-pae-base-3.0.101-0.47.106.56.1
    • kernel-pae-devel-3.0.101-0.47.106.56.1
    • kernel-source-3.0.101-0.47.106.56.1
    • kernel-syms-3.0.101-0.47.106.56.1
    • kernel-trace-3.0.101-0.47.106.56.1
    • kernel-trace-base-3.0.101-0.47.106.56.1
    • kernel-trace-devel-3.0.101-0.47.106.56.1
    • kernel-xen-3.0.101-0.47.106.56.1
    • kernel-xen-base-3.0.101-0.47.106.56.1
    • kernel-xen-devel-3.0.101-0.47.106.56.1
  • SUSE Linux Enterprise Debuginfo 11-SP3 (i586 s390x x86_64):
    • kernel-default-debuginfo-3.0.101-0.47.106.56.1
    • kernel-default-debugsource-3.0.101-0.47.106.56.1
    • kernel-trace-debuginfo-3.0.101-0.47.106.56.1
    • kernel-trace-debugsource-3.0.101-0.47.106.56.1
  • SUSE Linux Enterprise Debuginfo 11-SP3 (i586 x86_64):
    • kernel-ec2-debuginfo-3.0.101-0.47.106.56.1
    • kernel-ec2-debugsource-3.0.101-0.47.106.56.1
    • kernel-xen-debuginfo-3.0.101-0.47.106.56.1
    • kernel-xen-debugsource-3.0.101-0.47.106.56.1
  • SUSE Linux Enterprise Debuginfo 11-SP3 (x86_64):
    • kernel-bigsmp-debuginfo-3.0.101-0.47.106.56.1
    • kernel-bigsmp-debugsource-3.0.101-0.47.106.56.1
  • SUSE Linux Enterprise Debuginfo 11-SP3 (i586):
    • kernel-pae-debuginfo-3.0.101-0.47.106.56.1
    • kernel-pae-debugsource-3.0.101-0.47.106.56.1

References: