CVE-2015-5157

arch/x86/entry/entry_64.S in the Linux kernel before 4.1.6 on the x86_64 platform mishandles IRET faults in processing NMIs that occurred during userspace execution, which might allow local users to gain privileges by triggering an NMI.

arch/x86/entry/entry_64.S in the Linux kernel before 4.1.6 on the x86_64 platform mishandles IRET faults in processing NMIs that occurred during userspace execution, which might allow local users to gain privileges by triggering an NMI.

The SUSE Linux Enterprise 12 kernel was updated to 3.12.48-52.27 to receive various security and bugfixes.

Following security bugs were fixed:

• CVE-2015-7613: A flaw was found in the Linux kernel IPC code that could lead to arbitrary code execution. The ipc_addid() function initialized a shared object that has unset uid/gid values. Since the fields are not initialized, the check can falsely succeed. (bsc#948536)
• CVE-2015-5156: When a guests KVM network devices is in a bridge configuration the kernel can create a situation in which packets are fragmented in an unexpected fashion. The GRO functionality can create a situation in which multiple SKB's are chained together in a single packets fraglist (by design). (bsc#940776)
• CVE-2015-5157: arch/x86/entry/entry_64.S in the Linux kernel before 4.1.6 on the x86_64 platform mishandles IRET faults in processing NMIs that occurred during userspace execution, which might allow local users to gain privileges by triggering an NMI (bsc#938706).
• CVE-2015-6252: A flaw was found in the way the Linux kernel's vhost driver treated userspace provided log file descriptor when processing the VHOST_SET_LOG_FD ioctl command. The file descriptor was never released and continued to consume kernel memory. A privileged local user with access to the /dev/vhost-net files could use this flaw to create a denial-of-service attack (bsc#942367).
• CVE-2015-5697: The get_bitmap_file function in drivers/md/md.c in the Linux kernel before 4.1.6 does not initialize a certain bitmap data structure, which allows local users to obtain sensitive information from kernel memory via a GET_BITMAP_FILE ioctl call. (bnc#939994)
• CVE-2015-6937: A NULL pointer dereference flaw was found in the Reliable Datagram Sockets (RDS) implementation allowing a local user to cause system DoS. A verification was missing that the underlying transport exists when a connection was created. (bsc#945825)
• CVE-2015-5283: A NULL pointer dereference flaw was found in SCTP implementation allowing a local user to cause system DoS. Creation of multiple sockets in parallel when system doesn't have SCTP module loaded can lead to kernel panic. (bsc#947155)

The following non-security bugs were fixed:

• ALSA: hda - Abort the probe without i915 binding for HSW/BDW (bsc#936556).
• Btrfs: Backport subvolume mount option handling (bsc#934962)
• Btrfs: Handle unaligned length in extent_same (bsc#937609).
• Btrfs: advertise which crc32c implementation is being used on mount (bsc#946057).
• Btrfs: allow mounting btrfs subvolumes with different ro/rw options.
• Btrfs: check if previous transaction aborted to avoid fs corruption (bnc#942509).
• Btrfs: clean up error handling in mount_subvol() (bsc#934962).
• Btrfs: cleanup orphans while looking up default subvolume (bsc#914818).
• Btrfs: do not update mtime/ctime on deduped inodes (bsc#937616).
• Btrfs: fail on mismatched subvol and subvolid mount options (bsc#934962).
• Btrfs: fix chunk allocation regression leading to transaction abort (bnc#938550).
• Btrfs: fix clone / extent-same deadlocks (bsc#937612).
• Btrfs: fix crash on close_ctree() if cleaner starts new transaction (bnc#938891).
• Btrfs: fix deadlock with extent-same and readpage (bsc#937612).
• Btrfs: fix file corruption after cloning inline extents (bnc#942512).
• Btrfs: fix file read corruption after extent cloning and fsync (bnc#946902).
• Btrfs: fix find_free_dev_extent() malfunction in case device tree has hole (bnc#938550).
• Btrfs: fix hang when failing to submit bio of directIO (bnc#942685).
• Btrfs: fix list transaction->pending_ordered corruption (bnc#938893).
• Btrfs: fix memory corruption on failure to submit bio for direct IO (bnc#942685).
• Btrfs: fix memory leak in the extent_same ioctl (bsc#937613).
• Btrfs: fix put dio bio twice when we submit dio bio fail (bnc#942685).
• Btrfs: fix race between balance and unused block group deletion (bnc#938892). -…

The SUSE Linux Enterprise 11 Service Pack 3 kernel was updated to receive various security and bugfixes.

Following security bugs were fixed:

• CVE-2015-8104: Prevent guest to host DoS caused by infinite loop in microcode via #DB exception (bsc#954404).
• CVE-2015-5307: Prevent guest to host DoS caused by infinite loop in microcode via #AC exception (bsc#953527).
• CVE-2015-7990: RDS: Verify the underlying transport exists before creating a connection, preventing possible DoS (bsc#952384).
• CVE-2015-5157: arch/x86/entry/entry_64.S in the Linux kernel on the x86_64 platform mishandled IRET faults in processing NMIs that occurred during userspace execution, which might have allowed local users to gain privileges by triggering an NMI (bsc#938706).
• CVE-2015-7872: Possible crash when trying to garbage collect an uninstantiated keyring (bsc#951440).
• CVE-2015-0272: Prevent remote DoS using IPv6 RA with bogus MTU by validating before applying it (bsc#944296).
• CVE-2015-6937: The __rds_conn_create function in net/rds/connection.c in the Linux kernel allowed local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by using a socket that was not properly bound (bsc#945825).
• CVE-2015-6252: The vhost_dev_ioctl function in drivers/vhost/vhost.c in the Linux kernel allowed local users to cause a denial of service (memory consumption) via a VHOST_SET_LOG_FD ioctl call that triggered permanent file-descriptor allocation (bsc#942367).

The following non-security bugs were fixed:

• alsa: hda - Disable 64bit address for Creative HDA controllers (bsc#814440).
• btrfs: fix hang when failing to submit bio of directIO (bsc#942688).
• btrfs: fix memory corruption on failure to submit bio for direct IO (bsc#942688).
• btrfs: fix put dio bio twice when we submit dio bio fail (bsc#942688).
• dm sysfs: introduce ability to add writable attributes (bsc#904348).
• dm-snap: avoid deadock on s->lock when a read is split (bsc#939826).
• dm: do not start current request if it would have merged with the previous (bsc#904348).
• dm: impose configurable deadline for dm_request_fn merge heuristic (bsc#904348).
• drm/i915: (re)init HPD interrupt storm statistics (bsc#942938).
• drm/i915: Add HPD IRQ storm detection (v5) (bsc#942938).
• drm/i915: Add Reenable Timer to turn Hotplug Detection back on (v4) (bsc#942938).
• drm/i915: Add bit field to record which pins have received HPD events (v3) (bsc#942938).
• drm/i915: Add enum hpd_pin to intel_encoder (bsc#942938).
• drm/i915: Add messages useful for HPD storm detection debugging (v2) (bsc#942938).
• drm/i915: Avoid race of intel_crt_detect_hotplug() with HPD interrupt (bsc#942938).
• drm/i915: Convert HPD interrupts to make use of HPD pin assignment in encoders (v2) (bsc#942938).
• drm/i915: Disable HPD interrupt on pin when irq storm is detected (v3) (bsc#942938).
• drm/i915: Do not WARN nor handle unexpected hpd interrupts on gmch platforms (bsc#942938).
• drm/i915: Enable hotplug interrupts after querying hw capabilities (bsc#942938).
• drm/i915: Fix DDC probe for passive adapters (bsc#900610, fdo#85924).
• drm/i915: Fix hotplug interrupt enabling for SDVOC (bsc#942938).
• drm/i915: Fix up sdvo hpd pins for i965g/gm (bsc#942938).
• drm/i915: Get rid if the '^A' in struct drm_i915_private (bsc#942938).
• drm/i915: Make hpd arrays big enough to avoid out of bounds access (bsc#942938).
• drm/i915: Mask out the HPD irq bits before setting them individually (bsc#942938).
• drm/i915: Only print hotplug event message when hotplug bit is set (bsc#942938).
• drm/i915: Only reprobe display on encoder which has received an HPD event (v2) (bsc#942938).
• drm/i915: Queue reenable timer also when enable_hotplug_processing is false (bsc#942938).
• drm/i915: Remove i965_hpd_irq_setup (bsc#942938).
• drm/i915: Remove pch_rq_mask from struct drm_i915_private (bsc#942938).
• drm/i915: Remove valleyview_hpd_irq_setup (bsc#942938).
• drm/i915: Use an…

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

Following security bugs were fixed:

• CVE-2015-7509: Mounting ext4 filesystems in no-journal mode could hav lead to a system crash (bsc#956709).
• CVE-2015-7799: The slhc_init function in drivers/net/slip/slhc.c in the Linux kernel did not ensure that certain slot numbers are valid, which allowed local users to cause a denial of service (NULL pointer dereference and system crash) via a crafted PPPIOCSMAXCID ioctl call (bnc#949936).
• CVE-2015-8104: The KVM subsystem in the Linux kernel allowed guest OS users to cause a denial of service (host OS panic or hang) by triggering many #DB (aka Debug) exceptions, related to svm.c (bnc#954404).
• CVE-2015-5307: The KVM subsystem in the Linux kernel allowed guest OS users to cause a denial of service (host OS panic or hang) by triggering many #AC (aka Alignment Check) exceptions, related to svm.c and vmx.c (bnc#953527).
• CVE-2015-7990: RDS: There was no verification that an underlying transport exists when creating a connection, causing usage of a NULL pointer (bsc#952384).
• CVE-2015-5157: arch/x86/entry/entry_64.S in the Linux kernel on the x86_64 platform mishandled IRET faults in processing NMIs that occurred during userspace execution, which might have allowed local users to gain privileges by triggering an NMI (bnc#938706).
• CVE-2015-7872: The key_gc_unused_keys function in security/keys/gc.c in the Linux kernel allowed local users to cause a denial of service (OOPS) via crafted keyctl commands (bnc#951440).
• CVE-2015-0272: Missing checks allowed remote attackers to cause a denial of service (IPv6 traffic disruption) via a crafted MTU value in an IPv6 Router Advertisement (RA) message, a different vulnerability than CVE-2015-8215 (bnc#944296).
• CVE-2015-6937: The __rds_conn_create function in net/rds/connection.c in the Linux kernel allowed local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by using a socket that was not properly bound (bnc#945825).

The following non-security bugs were fixed:

• ALSA: hda - Disable 64bit address for Creative HDA controllers (bnc#814440).
• Driver: Vmxnet3: Fix ethtool -S to return correct rx queue stats (bsc#950750).
• Drivers: hv: do not do hypercalls when hypercall_page is NULL.
• Drivers: hv: kvp: move poll_channel() to hyperv_vmbus.h.
• Drivers: hv: util: move kvp/vss function declarations to hyperv_vmbus.h.
• Drivers: hv: vmbus: Get rid of some unused definitions.
• Drivers: hv: vmbus: Implement the protocol for tearing down vmbus state.
• Drivers: hv: vmbus: add special crash handler (bnc#930770).
• Drivers: hv: vmbus: add special kexec handler.
• Drivers: hv: vmbus: kill tasklets on module unload.
• Drivers: hv: vmbus: prefer '^A' notification chain to 'panic'.
• Drivers: hv: vmbus: remove hv_synic_free_cpu() call from hv_synic_cleanup().
• Drivers: hv: vmbus: unregister panic notifier on module unload.
• IB/srp: Avoid skipping srp_reset_host() after a transport error (bsc#904965).
• IB/srp: Fix a sporadic crash triggered by cable pulling (bsc#904965).
• KEYS: Fix race between key destruction and finding a keyring by name (bsc#951440).
• Make sure XPRT_CONNECTING gets cleared when needed (bsc#946309).
• NFSv4: Fix two infinite loops in the mount code (bsc#954628).
• PCI: Add VPD function 0 quirk for Intel Ethernet devices (bnc#943786).
• PCI: Add dev_flags bit to access VPD through function 0 (bnc#943786).
• PCI: Clear NumVFs when disabling SR-IOV in sriov_init() (bnc#952084).
• PCI: Refresh First VF Offset and VF Stride when updating NumVFs (bnc#952084).
• PCI: Update NumVFs register when disabling SR-IOV (bnc#952084).
• PCI: delay configuration of SRIOV capability (bnc#952084).
• PCI: set pci sriov page size before reading SRIOV BAR (bnc#952084).
• SCSI: hosts: update to use ida_simple for host_no (bsc#939926)
• SUNRPC refactor rpcauth_checkverf error returns…

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

Following security bugs were fixed:

• CVE-2015-7509: Mounting a prepared ext2 filesystem as ext4 could lead to a local denial of service (crash) (bsc#956709).
• CVE-2015-7799: The slhc_init function in drivers/net/slip/slhc.c in the Linux kernel did not ensure that certain slot numbers are valid, which allowed local users to cause a denial of service (NULL pointer dereference and system crash) via a crafted PPPIOCSMAXCID ioctl call (bnc#949936).
• CVE-2015-8104: The KVM subsystem in the Linux kernel allowed guest OS users to cause a denial of service (host OS panic or hang) by triggering many #DB (aka Debug) exceptions, related to svm.c (bnc#954404).
• CVE-2015-5307: The KVM subsystem in the Linux kernel allowed guest OS users to cause a denial of service (host OS panic or hang) by triggering many #AC (aka Alignment Check) exceptions, related to svm.c and vmx.c (bnc#953527).
• CVE-2015-7990: RDS: Verify the underlying transport exists before creating a connection, preventing possible DoS (bsc#952384).
• CVE-2015-5157: arch/x86/entry/entry_64.S in the Linux kernel on the x86_64 platform mishandled IRET faults in processing NMIs that occurred during userspace execution, which might allow local users to gain privileges by triggering an NMI (bnc#937969 937970 938706 939207).
• CVE-2015-7872: The key_gc_unused_keys function in security/keys/gc.c in the Linux kernel allowed local users to cause a denial of service (OOPS) via crafted keyctl commands (bnc#951440).
• CVE-2015-8215: net/ipv6/addrconf.c in the IPv6 stack in the Linux kernel did not validate attempted changes to the MTU value, which allowed context-dependent attackers to cause a denial of service (packet loss) via a value that is (1) smaller than the minimum compliant value or (2) larger than the MTU of an interface, as demonstrated by a Router Advertisement (RA) message that is not validated by a daemon, a different vulnerability than CVE-2015-0272. NOTE: the scope of CVE-2015-0272 is limited to the NetworkManager product. (bnc#955354).
• CVE-2015-6937: The __rds_conn_create function in net/rds/connection.c in the Linux kernel allowed local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by using a socket that was not properly bound (bnc#945825).

The following non-security bugs were fixed:

• af_xhci: avoid path quiesce of severed path in shutdown() (bnc#946214, LTC#131684).
• ahci: Add Device ID for Intel Sunrise Point PCH (bsc#953799).
• alsa: hda - Disable 64bit address for Creative HDA controllers (bnc#814440).
• blktap: also call blkif_disconnect() when frontend switched to closed (bsc#952976).
• blktap: refine mm tracking (bsc#952976).
• cachefiles: Avoid deadlocks with fs freezing (bsc#935123).
• dm: do not start current request if it would've merged with the previous (bsc#904348).
• dm: impose configurable deadline for dm_request_fn's merge heuristic (bsc#904348).
• dm-snap: avoid deadock on s->lock when a read is split (bsc#939826).
• dm sysfs: introduce ability to add writable attributes (bsc#904348).
• drivers: hv: do not do hypercalls when hypercall_page is NULL.
• drivers: hv: kvp: move poll_channel() to hyperv_vmbus.h.
• drivers: hv: util: move kvp/vss function declarations to hyperv_vmbus.h.
• drivers: hv: vmbus: add special crash handler (bnc#930770).
• drivers: hv: vmbus: add special kexec handler.
• drivers: hv: vmbus: Get rid of some unused definitions.
• drivers: hv: vmbus: Implement the protocol for tearing down vmbus state.
• drivers: hv: vmbus: kill tasklets on module unload.
• drivers: hv: vmbus: prefer 'die' notification chain to 'panic'.
• drivers: hv: vmbus: remove hv_synic_free_cpu() call from hv_synic_cleanup().
• drivers: hv: vmbus: unregister panic notifier on module unload.
• driver: Vmxnet3: Fix ethtool -S to…

The SUSE Linux Enterprise 11 SP3 Realtime kernel was updated to receive various security and bugfixes.

Following security bugs were fixed:

• CVE-2015-8104: The KVM subsystem in the Linux kernel allowed guest OS users to cause a denial of service (host OS panic or hang) by triggering many #DB (aka Debug) exceptions, related to svm.c (bnc#954404).
• CVE-2015-5307: The KVM subsystem in the Linux kernel allowed guest OS users to cause a denial of service (host OS panic or hang) by triggering many #AC (aka Alignment Check) exceptions, related to svm.c and vmx.c (bnc#953527).
• CVE-2015-7990: RDS: Verify the underlying transport exists before creating a connection, preventing possible DoS (bsc#952384, CVE-2015-7990).
• CVE-2015-5157: arch/x86/entry/entry_64.S in the Linux kernel on the x86_64 platform mishandled IRET faults in processing NMIs that occurred during userspace execution, which might allow local users to gain privileges by triggering an NMI (bnc#937969 bnc#937970 bnc#938706 bnc#939207).
• CVE-2015-7872: The key_gc_unused_keys function in security/keys/gc.c in the Linux kernel allowed local users to cause a denial of service (OOPS) via crafted keyctl commands (bnc#951440).
• CVE-2015-8215: net/ipv6/addrconf.c in the IPv6 stack in the Linux kernel did not validate attempted changes to the MTU value, which allowed context-dependent attackers to cause a denial of service (packet loss) via a value that is (1) smaller than the minimum compliant value or (2) larger than the MTU of an interface, as demonstrated by a Router Advertisement (RA) message that is not validated by a daemon, a different vulnerability than CVE-2015-0272. NOTE: the scope of CVE-2015-0272 is limited to the NetworkManager product. (bnc#955354).
• CVE-2015-6937: The __rds_conn_create function in net/rds/connection.c in the Linux kernel allowed local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by using a socket that was not properly bound (bnc#945825).
• CVE-2015-6252: The vhost_dev_ioctl function in drivers/vhost/vhost.c in the Linux kernel allowed local users to cause a denial of service (memory consumption) via a VHOST_SET_LOG_FD ioctl call that triggers permanent file-descriptor allocation (bnc#942367).

The following non-security bugs were fixed:

• alsa: hda - Disable 64bit address for Creative HDA controllers (bnc#814440).
• btrfs: fix hang when failing to submit bio of directIO (bnc#942688).
• btrfs: fix memory corruption on failure to submit bio for direct IO (bnc#942688).
• btrfs: fix put dio bio twice when we submit dio bio fail (bnc#942688).
• dm: do not start current request if it would've merged with the previous (bsc#904348).
• dm: impose configurable deadline for dm_request_fn's merge heuristic (bsc#904348).
• dm-snap: avoid deadock on s->lock when a read is split (bsc#939826).
• dm sysfs: introduce ability to add writable attributes (bsc#904348).
• drm/i915: Add bit field to record which pins have received HPD events (v3) (bsc#942938).
• drm/I915: Add enum hpd_pin to intel_encoder (bsc#942938).
• drm/i915: add hotplug activation period to hotplug update mask (bsc#953980).
• drm/i915: Add HPD IRQ storm detection (v5) (bsc#942938).
• drm/i915: Add messages useful for HPD storm detection debugging (v2) (bsc#942938).
• drm/i915: Add Reenable Timer to turn Hotplug Detection back on (v4) (bsc#942938).
• drm/i915: assert_spin_locked for pipestat interrupt enable/disable (bsc#942938).
• drm/i915: Avoid race of intel_crt_detect_hotplug() with HPD interrupt (bsc#942938).
• drm/i915: Avoid race of intel_crt_detect_hotplug() with HPD interrupt, v2 (bsc#942938).
• drm/i915: clear crt hotplug compare voltage field before setting (bsc#942938).
• drm/i915: close tiny race in the ilk pcu even interrupt setup (bsc#942938).
• drm/i915: Convert HPD interrupts to make use of HPD pin assignment in encoders (v2) (bsc#942938). -…

arch/x86/entry/entry_64.S in the Linux kernel before 4.1.6 on the x86_64 platform mishandles IRET faults in processing NMIs that occurred during userspace execution, which might allow local users to gain privileges by triggering an NMI.

Andy Lutomirski discovered a flaw in the Linux kernel's handling of nested NMIs (non-maskable interrupts). An unprivileged local user could exploit this flaw to cause a denial of service (system crash) or potentially escalate their privileges. (CVE-2015-3290)

Colin King discovered a flaw in the add_key function of the Linux kernel's keyring subsystem. A local user could exploit this flaw to cause a denial of service (memory exhaustion). (CVE-2015-1333)

Andy Lutomirski discovered a flaw that allows user to cause the Linux kernel to ignore some NMIs (non-maskable interrupts). A local unprivileged user could exploit this flaw to potentially cause the system to miss important NMIs resulting in unspecified effects. (CVE-2015-3291)

Andy Lutomirski and Petr Matousek discovered that an NMI (non-maskable interrupt) that interrupts userspace and encounters an IRET fault is incorrectly handled by the Linux kernel. An unprivileged local user could exploit this flaw to cause a denial of service (kernel OOPs), corruption, or potentially escalate privileges on the system. (CVE-2015-5157)

Andy Lutomirski discovered a flaw in the Linux kernel's handling of nested NMIs (non-maskable interrupts). An unprivileged local user could exploit this flaw to cause a denial of service (system crash) or potentially escalate their privileges. (CVE-2015-3290)

Colin King discovered a flaw in the add_key function of the Linux kernel's keyring subsystem. A local user could exploit this flaw to cause a denial of service (memory exhaustion). (CVE-2015-1333)

Andy Lutomirski discovered a flaw that allows user to cause the Linux kernel to ignore some NMIs (non-maskable interrupts). A local unprivileged user could exploit this flaw to potentially cause the system to miss important NMIs resulting in unspecified effects. (CVE-2015-3291)

Andy Lutomirski and Petr Matousek discovered that an NMI (non-maskable interrupt) that interrupts userspace and encounters an IRET fault is incorrectly handled by the Linux kernel. An unprivileged local user could exploit this flaw to cause a denial of service (kernel OOPs), corruption, or potentially escalate privileges on the system. (CVE-2015-5157)

Andy Lutomirski discovered a flaw in the Linux kernel's handling of nested NMIs (non-maskable interrupts). An unprivileged local user could exploit this flaw to cause a denial of service (system crash) or potentially escalate their privileges. (CVE-2015-3290)

Colin King discovered a flaw in the add_key function of the Linux kernel's keyring subsystem. A local user could exploit this flaw to cause a denial of service (memory exhaustion). (CVE-2015-1333)

Andy Lutomirski discovered a flaw that allows user to cause the Linux kernel to ignore some NMIs (non-maskable interrupts). A local unprivileged user could exploit this flaw to potentially cause the system to miss important NMIs resulting in unspecified effects. (CVE-2015-3291)

Andy Lutomirski and Petr Matousek discovered that an NMI (non-maskable interrupt) that interrupts userspace and encounters an IRET fault is incorrectly handled by the Linux kernel. An unprivileged local user could exploit this flaw to cause a denial of service (kernel OOPs), corruption, or potentially escalate privileges on the system. (CVE-2015-5157)

Andy Lutomirski discovered a flaw in the Linux kernel's handling of nested NMIs (non-maskable interrupts). An unprivileged local user could exploit this flaw to cause a denial of service (system crash) or potentially escalate their privileges. (CVE-2015-3290)

Andy Lutomirski discovered a flaw that allows user to cause the Linux kernel to ignore some NMIs (non-maskable interrupts). A local unprivileged user could exploit this flaw to potentially cause the system to miss important NMIs resulting in unspecified effects. (CVE-2015-3291)

Andy Lutomirski and Petr Matousek discovered that an NMI (non-maskable interrupt) that interrupts userspace and encounters an IRET fault is incorrectly handled by the Linux kernel. An unprivileged local user could exploit this flaw to cause a denial of service (kernel OOPs), corruption, or potentially escalate privileges on the system. (CVE-2015-5157)