Security update for the Linux Kernel

Announcement ID: SUSE-SU-2018:1368-1
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2017-5715 ( SUSE ): 7.1 CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
  • CVE-2017-5715 ( NVD ): 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
  • CVE-2017-5715 ( NVD ): 5.6 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
  • CVE-2017-5753 ( SUSE ): 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
  • CVE-2017-5753 ( SUSE ): 7.1 CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
  • CVE-2017-5753 ( NVD ): 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
  • CVE-2017-5753 ( NVD ): 5.6 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
  • CVE-2018-1000199 ( SUSE ): 7.1 CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
  • CVE-2018-1000199 ( NVD ): 5.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • CVE-2018-10675 ( SUSE ): 5.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • CVE-2018-10675 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2018-10675 ( NVD ): 7.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2018-3639 ( SUSE ): 4.3 CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
  • CVE-2018-3639 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
  • CVE-2018-3639 ( NVD ): 5.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected Products:
  • SLES for SAP Applications 11-SP4
  • SUSE Linux Enterprise Server 11 SP4
  • SUSE Linux Enterprise Software Development Kit 11 SP4

An update that solves five vulnerabilities and has 14 security fixes can now be installed.

Description:

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

The following security bugs were fixed:

  • CVE-2018-3639: Information leaks using "Memory Disambiguation" feature in modern CPUs were mitigated, aka "Spectre Variant 4" (bnc#1087082).

A new boot commandline option was introduced, "spec_store_bypass_disable", which can have following values:

  • auto: Kernel detects whether your CPU model contains an implementation of Speculative Store Bypass and picks the most appropriate mitigation.
  • on: disable Speculative Store Bypass
  • off: enable Speculative Store Bypass
  • prctl: Control Speculative Store Bypass per thread via prctl. Speculative Store Bypass is enabled for a process by default. The state of the control is inherited on fork.
  • seccomp: Same as "prctl" above, but all seccomp threads will disable SSB unless they explicitly opt out.

The default is "seccomp", meaning programs need explicit opt-in into the mitigation.

Status can be queried via the /sys/devices/system/cpu/vulnerabilities/spec_store_bypass file, containing:

  • "Vulnerable"
  • "Mitigation: Speculative Store Bypass disabled"
  • "Mitigation: Speculative Store Bypass disabled via prctl"
  • "Mitigation: Speculative Store Bypass disabled via prctl and seccomp"

  • CVE-2018-1000199: An address corruption flaw was discovered while modifying a h/w breakpoint via 'modify_user_hw_breakpoint' routine, an unprivileged user/process could use this flaw to crash the system kernel resulting in DoS OR to potentially escalate privileges on a the system. (bsc#1089895)

  • CVE-2018-10675: The do_get_mempolicy function in mm/mempolicy.c allowed local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via crafted system calls (bnc#1091755).
  • CVE-2017-5715: The retpoline mitigation for Spectre v2 has been enabled also for 32bit x86.
  • CVE-2017-5753: Spectre v1 mitigations have been improved by the versions merged from the upstream kernel.

The following non-security bugs were fixed:

  • Avoid quadratic search when freeing delegations (bsc#1084760).
  • cifs: fix crash due to race in hmac(md5) handling (bsc#1091671).
  • hid: roccat: prevent an out of bounds read in kovaplus_profile_activated() (bsc#1087092).
  • mmc: jz4740: Fix race condition in IRQ mask update (bsc#1090888).
  • powerpc/64: Disable gmb() on powerpc
  • powerpc/64s: Add barrier_nospec (bsc#1068032, bsc#1080157).
  • powerpc/64s: Add support for ori barrier_nospec patching (bsc#1068032, bsc#1080157).
  • powerpc/64s: Enable barrier_nospec based on firmware settings (bsc#1068032, bsc#1080157).
  • powerpc/64s: Enhance the information in cpu_show_meltdown() (bsc#1068032, bsc#1075088, bsc#1091815).
  • powerpc/64s: Enhance the information in cpu_show_spectre_v1() (bsc#1068032).
  • powerpc/64s: Fix section mismatch warnings from setup_rfi_flush() (bsc#1068032, bsc#1075087, bsc#1091041).
  • powerpc/64s: Improve RFI L1-D cache flush fallback (bsc#1068032, bsc#1075088, bsc#1091815).
  • powerpc/64s: Move cpu_show_meltdown() (bsc#1068032, bsc#1075088, bsc#1091815).
  • powerpc/64s: Patch barrier_nospec in modules (bsc#1068032, bsc#1080157).
  • powerpc/64s: Wire up cpu_show_spectre_v1() (bsc#1068032, bsc#1075088, bsc#1091815).
  • powerpc/64s: Wire up cpu_show_spectre_v2() (bsc#1068032, bsc#1075088, bsc#1091815).
  • powerpc/64: Use barrier_nospec in syscall entry (bsc#1068032, bsc#1080157).
  • powerpc: Add security feature flags for Spectre/Meltdown (bsc#1068032, bsc#1075088, bsc#1091815).
  • powerpc: Move default security feature flags (bsc#1068032, bsc#1075088, bsc#1091815).
  • powerpc: Move local setup.h declarations to arch includes (bsc#1068032, bsc#1075088, bsc#1091815).
  • powerpc/pseries: Add new H_GET_CPU_CHARACTERISTICS flags (bsc#1068032, bsc#1075088, bsc#1091815).
  • powerpc/pseries: Fix clearing of security feature flags (bsc#1068032, bsc#1075088, bsc#1091815).
  • powerpc/pseries: Restore default security feature flags on setup (bsc#1068032, bsc#1075088, bsc#1091815).
  • powerpc/pseries: Set or clear security feature flags (bsc#1068032, bsc#1075088, bsc#1091815).
  • powerpc/pseries: Use the security flags in pseries_setup_rfi_flush() (bsc#1068032, bsc#1075088, bsc#1091815).
  • powerpc/rfi-flush: Always enable fallback flush on pseries (bsc#1068032, bsc#1075088, bsc#1091815).
  • powerpc/rfi-flush: Call setup_rfi_flush() after LPM migration (bsc#1068032, bsc#1075088, bsc#1091815).
  • powerpc/rfi-flush: Differentiate enabled and patched flush types (bsc#1068032, bsc#1075088, bsc#1091815).
  • powerpc/rfi-flush: Make it possible to call setup_rfi_flush() again (bsc#1068032, bsc#1075088, bsc#1091815).
  • powerpc: Use barrier_nospec in copy_from_user() (bsc#1068032, bsc#1080157).
  • series.conf: fix the header It was corrupted back in 2015.
  • tracing: Create seq_buf layer in trace_seq (bsc#1091815).
  • Update config files. Enable retpolines for i386 build.
  • usb: Accept bulk endpoints with 1024-byte maxpacket (bsc#1090888).
  • usb: hub: fix SS hub-descriptor handling (bsc#1092372).
  • x86/bugs: correctly force-disable IBRS on !SKL systems (bsc#1092497).
  • x86/kaiser: export symbol kaiser_set_shadow_pgd() (bsc#1090630)
  • x86/xen: disable IBRS around CPU stopper function invocation
  • xen-netfront: fix req_prod check to avoid RX hang when index wraps (bsc#1046610).
  • xfs: fix buffer use after free on IO error (bsc#1052943).
  • xfs: prevent recursion in xfs_buf_iorequest (bsc#1052943).

Special Instructions and Notes:

  • Please reboot the system after installing this update.

Patch Instructions:

To install this SUSE 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 Software Development Kit 11 SP4
    zypper in -t patch sdksp4-kernel-20180512-13618=1
  • SUSE Linux Enterprise Server 11 SP4
    zypper in -t patch slessp4-kernel-20180512-13618=1
  • SLES for SAP Applications 11-SP4
    zypper in -t patch slessp4-kernel-20180512-13618=1

Package List:

  • SUSE Linux Enterprise Software Development Kit 11 SP4 (noarch)
    • kernel-docs-3.0.101-108.48.1
  • SUSE Linux Enterprise Server 11 SP4 (s390x x86_64 i586 ppc64 ia64 nosrc)
    • kernel-default-3.0.101-108.48.1
    • kernel-trace-3.0.101-108.48.1
  • SUSE Linux Enterprise Server 11 SP4 (s390x x86_64 i586 ppc64 ia64)
    • kernel-default-base-3.0.101-108.48.1
    • kernel-syms-3.0.101-108.48.1
    • kernel-default-devel-3.0.101-108.48.1
    • kernel-source-3.0.101-108.48.1
    • kernel-trace-devel-3.0.101-108.48.1
    • kernel-trace-base-3.0.101-108.48.1
  • SUSE Linux Enterprise Server 11 SP4 (nosrc x86_64 i586)
    • kernel-xen-3.0.101-108.48.1
    • kernel-ec2-3.0.101-108.48.1
  • SUSE Linux Enterprise Server 11 SP4 (x86_64 i586)
    • kernel-xen-base-3.0.101-108.48.1
    • kernel-ec2-devel-3.0.101-108.48.1
    • kernel-ec2-base-3.0.101-108.48.1
    • kernel-xen-devel-3.0.101-108.48.1
  • SUSE Linux Enterprise Server 11 SP4 (nosrc i586)
    • kernel-pae-3.0.101-108.48.1
  • SUSE Linux Enterprise Server 11 SP4 (i586)
    • kernel-pae-devel-3.0.101-108.48.1
    • kernel-pae-base-3.0.101-108.48.1
  • SUSE Linux Enterprise Server 11 SP4 (ppc64 nosrc)
    • kernel-bigmem-3.0.101-108.48.1
    • kernel-ppc64-3.0.101-108.48.1
  • SUSE Linux Enterprise Server 11 SP4 (ppc64)
    • kernel-ppc64-devel-3.0.101-108.48.1
    • kernel-ppc64-base-3.0.101-108.48.1
    • kernel-bigmem-devel-3.0.101-108.48.1
    • kernel-bigmem-base-3.0.101-108.48.1
  • SUSE Linux Enterprise Server 11 SP4 (s390x)
    • kernel-default-man-3.0.101-108.48.1
  • SLES for SAP Applications 11-SP4 (ppc64 nosrc)
    • kernel-bigmem-3.0.101-108.48.1
    • kernel-ppc64-3.0.101-108.48.1
  • SLES for SAP Applications 11-SP4 (ppc64)
    • kernel-ppc64-devel-3.0.101-108.48.1
    • kernel-ppc64-base-3.0.101-108.48.1
    • kernel-bigmem-devel-3.0.101-108.48.1
    • kernel-bigmem-base-3.0.101-108.48.1
  • SLES for SAP Applications 11-SP4 (ppc64 nosrc x86_64)
    • kernel-default-3.0.101-108.48.1
    • kernel-trace-3.0.101-108.48.1
  • SLES for SAP Applications 11-SP4 (ppc64 x86_64)
    • kernel-default-base-3.0.101-108.48.1
    • kernel-syms-3.0.101-108.48.1
    • kernel-default-devel-3.0.101-108.48.1
    • kernel-source-3.0.101-108.48.1
    • kernel-trace-devel-3.0.101-108.48.1
    • kernel-trace-base-3.0.101-108.48.1
  • SLES for SAP Applications 11-SP4 (nosrc x86_64)
    • kernel-xen-3.0.101-108.48.1
    • kernel-ec2-3.0.101-108.48.1
  • SLES for SAP Applications 11-SP4 (x86_64)
    • kernel-xen-base-3.0.101-108.48.1
    • kernel-ec2-devel-3.0.101-108.48.1
    • kernel-ec2-base-3.0.101-108.48.1
    • kernel-xen-devel-3.0.101-108.48.1

References: