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HistoryMay 09, 2018 - 12:14 a.m.

Security update for the Linux Kernel (important)


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The SUSE Linux Enterprise 12 SP2 LTSS kernel was updated to 4.4.121 to
receive various security and bugfixes.

The following security bugs were fixed:

  • CVE-2018-8781: The udl_fb_mmap function in drivers/gpu/drm/udl/udl_fb.c
    had an integer-overflow vulnerability that allowed local users with
    access to the udldrmfb driver to obtain full read and write permissions
    on kernel physical pages, resulting in a code execution in kernel space
  • CVE-2018-10124: The kill_something_info function in kernel/signal.c
    might have allowed local users to cause a denial of service via an
    INT_MIN argument (bnc#1089752).
  • CVE-2018-10087: The kernel_wait4 function in kernel/exit.c might have
    allowed local users to cause a denial of service by triggering an
    attempted use of the -INT_MIN value (bnc#1089608).
  • CVE-2017-18257: The __get_data_block function in fs/f2fs/data.c in the
    Linux kernel allowed local users to cause a denial of service (integer
    overflow and loop) via crafted use of the open and fallocate system
    calls with an FS_IOC_FIEMAP ioctl. (bnc#1088241)
  • CVE-2018-8822: Incorrect buffer length handling in the ncp_read_kernel
    function in fs/ncpfs/ncplib_kernel.c could be exploited by malicious
    NCPFS servers to crash the kernel or execute code (bnc#1086162).
  • CVE-2018-8043: The unimac_mdio_probe function in
    drivers/net/phy/mdio-bcm-unimac.c did not validate certain resource
    availability, which allowed local users to cause a denial of service
    (NULL pointer dereference) (bnc#1084829).
  • CVE-2018-7740: The resv_map_release function in mm/hugetlb.c allowed
    local users to cause a denial of service (BUG) via a crafted application
    that made mmap system calls and has a large pgoff argument to the
    remap_file_pages system call (bnc#1084353).
  • CVE-2018-1087: And an unprivileged KVM guest user could use this flaw to
    potentially escalate their privileges inside a guest. (bsc#1087088)
  • CVE-2018-8897: An unprivileged system user could use incorrect set up
    interrupt stacks to crash the Linux kernel resulting in DoS issue.

The following non-security bugs were fixed:

  • alsa: hda/realtek - Fix speaker no sound after system resume
  • alsa: hda: Add a power_save blacklist (bnc#1012382).
  • alsa: usb-audio: Add a quirck for B&W PX headphones (bnc#1012382).
  • arm: dts: LogicPD Torpedo: Fix I2C1 pinmux (bnc#1012382).
  • arm: mvebu: Fix broken PL310_ERRATA_753970 selects (bnc#1012382).
  • kvm: mmu: Fix overlap between public and private memslots (bnc#1012382).
  • Partial revert "e1000e: Avoid receiver overrun interrupt bursts"
  • Revert "e1000e: Separate signaling for link check/link up" (bsc#1075428).
  • Revert "led: core: Fix brightness setting when setting delay_off=0"
  • Revert "watchdog: hpwdt: Remove legacy NMI sourcing (bsc#1085185)." This
    reverts commit 5d4a2355a2a1c2ec6fdf9d18b68ca0a04ff73c70.
  • bpf, x64: implement retpoline for tail call (bnc#1012382).
  • bridge: check brport attr show in brport_show (bnc#1012382).
  • btrfs: Only check first key for committed tree blocks (bsc#1084721).
  • btrfs: Validate child tree block’s level and first key (bsc#1084721).
  • btrfs: preserve i_mode if __btrfs_set_acl() fails (bnc#1012382).
  • ch9200: use skb_cow_head() to deal with cloned skbs (bsc#1088684).
  • cpufreq: s3c24xx: Fix broken s3c_cpufreq_init() (bnc#1012382).
  • dcache: Add cond_resched in shrink_dentry_list (bsc#1086194).
  • dm io: fix duplicate bio completion due to missing ref count
  • drm/i915/cmdparser: Do not check past the cmd length (bsc#1031717).
  • drm/i915/psr: Check for the specific AUX_FRAME_SYNC cap bit
  • e1000e: Avoid missed interrupts following ICR read (bsc#1075428).
  • e1000e: Avoid receiver overrun interrupt bursts (bsc#1075428).
  • e1000e: Fix check_for_link return value with autoneg off (bsc#1075428).
  • e1000e: Fix link check race condition (bsc#1075428).
  • e1000e: Fix queue interrupt re-raising in Other interrupt (bsc#1075428).
  • e1000e: Remove Other from EIAC (bsc#1075428).
  • fib_semantics: Do not match route with mismatching tclassid
  • fs/hugetlbfs/inode.c: change put_page/unlock_page order in
    hugetlbfs_fallocate() (git-fixes, bsc#1083745).
  • hdlc_ppp: carrier detect ok, do not turn off negotiation (bnc#1012382).
  • hugetlbfs: fix offset overflow in hugetlbfs mmap (bnc#1084353).
  • ibmvfc: Avoid unnecessary port relogin (bsc#1085404).
  • ibmvnic: Clear pending interrupt after device reset (bsc#1089644).
  • ibmvnic: Define vnic_login_client_data name field as unsized array
  • ibmvnic: Disable irqs before exiting reset from closed state
  • ibmvnic: Do not notify peers on parameter change resets (bsc#1089198).
  • ibmvnic: Do not reset CRQ for Mobility driver resets (bsc#1088600).
  • ibmvnic: Fix DMA mapping mistakes (bsc#1088600).
  • ibmvnic: Fix failover case for non-redundant configuration (bsc#1088600).
  • ibmvnic: Fix reset return from closed state (bsc#1084610).
  • ibmvnic: Fix reset scheduler error handling (bsc#1088600).
  • ibmvnic: Handle all login error conditions (bsc#1089198).
  • ibmvnic: Potential NULL dereference in clean_one_tx_pool() (bsc#1085224,
  • ibmvnic: Remove unused TSO resources in TX pool structure (bsc#1085224).
  • ibmvnic: Update TX pool cleaning routine (bsc#1085224).
  • ibmvnic: Zero used TX descriptor counter on reset (bsc#1088600).
  • ipv6 sit: work around bogus gcc-8 -Wrestrict warning (bnc#1012382).
  • kGraft: fix small race in reversion code (bsc#1083125).
  • kabi/severities: Ignore kgr_shadow_* kABI changes
  • kvm/x86: fix icebp instruction handling (bnc#1012382).
  • livepatch: Allow to call a custom callback when freeing shadow variables
    (bsc#1082299 fate#313296).
  • livepatch: Initialize shadow variables safely by a custom callback
    (bsc#1082299 fate#313296).
  • mac80211: do not WARN on bad WMM parameters from buggy APs (bsc#1031717).
  • md-cluster: fix wrong condition check in raid1_write_request
  • media: au0828: fix VIDEO_V4L2 dependency (bsc#1031717).
  • media: cx25821: prevent out-of-bounds read on array card (bsc#1031717).
  • media: m88ds3103: do not call a non-initalized function (bnc#1012382).
  • media: s3c-camif: fix out-of-bounds array access (bsc#1031717).
  • mm/hugetlb.c: do not call region_abort if region_chg fails (bnc#1084353).
  • mpls, nospec: Sanitize array index in mpls_label_ok() (bnc#1012382).
  • net: fix race on decreasing number of TX queues (bnc#1012382).
  • net: ipv4: avoid unused variable warning for sysctl (git-fixes).
  • net: ipv4: do not allow setting net.ipv4.route.min_pmtu below 68
  • net: mpls: Pull common label check into helper (bnc#1012382).
  • netlink: ensure to loop over all netns in genlmsg_multicast_allns()
  • nospec: Allow index argument to have const-qualified type (bnc#1012382).
  • perf/x86/intel: Add model number for Skylake Server to perf
  • powerpc/crash: Remove the test for cpu_online in the IPI callback
  • powerpc: Do not send system reset request through the oops path
  • powerpc: System reset avoid interleaving oops using die synchronisation
  • ppp: prevent unregistered channels from connecting to PPP units
  • regmap-i2c: Off by one in regmap_i2c_smbus_i2c_read/write()
  • regmap: Do not use format_val in regmap_bulk_read (bsc#1031717).
  • regmap: Fix reversed bounds check in regmap_raw_write() (bsc#1031717).
  • regmap: Format data for raw write in regmap_bulk_write (bsc#1031717).
  • rpm/ ensure sorted patches.
  • s390/cpuinfo: show facilities as reported by stfle (bnc#1076847,
  • s390/qeth: fix IPA command submission race (bnc#1012382).
  • s390/qeth: fix SETIP command handling (bnc#1012382).
  • sctp: fix dst refcnt leak in sctp_v4_get_dst (bnc#1012382).
  • sctp: fix dst refcnt leak in sctp_v6_get_dst() (bnc#1012382).
  • sctp: verify size of a new chunk in _sctp_make_chunk() (bnc#1012382).
  • storvsc: do not schedule work elements during host reset (bsc#1070536,
  • storvsc_drv: use embedded work structure for host rescan (bsc#1070536,
  • storvsc_drv: use separate workqueue for rescan (bsc#1070536,
  • swap: divide-by-zero when zero length swap file on ssd (bsc#1082153).
  • tpm: st33zp24: fix potential buffer overruns caused by bit glitches on
    the bus (bnc#1012382).
  • tpm_i2c_infineon: fix potential buffer overruns caused by bit glitches
    on the bus (bnc#1012382).
  • tpm_i2c_nuvoton: fix potential buffer overruns caused by bit glitches on
    the bus (bnc#1012382).
  • udplite: fix partial checksum initialization (bnc#1012382).
  • watchdog: hpwdt: Remove legacy NMI sourcing (bsc#1085185).
  • x86/apic/vector: Handle legacy irq data correctly (bnc#1012382).
  • x86/entry/64: Do not use IST entry for #BP stack (bsc#1087088).
  • x86/kaiser: Duplicate cpu_tss for an entry trampoline usage (bsc#1077560
  • x86/kaiser: Remove a user mapping of cpu_tss structure (bsc#1077560
  • x86/kaiser: Use a per-CPU trampoline stack for kernel entry
  • x86/kaiser: enforce trampoline stack alignment (bsc#1087260).
  • x86/speculation: Remove Skylake C2 from Speculation Control microcode
    blacklist (bsc#1087845).
  • xen-blkfront: fix mq start/stop race (bsc#1085042).
  • xen-netback: use skb to determine number of required guest Rx requests