SUSE-SU-2015:1592-1

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

The following feature was added for RT:

• FATE#317131: The SocketCAN (Peak PCI) driver was added for CAN bus support.

Following security bugs were fixed:

• CVE-2015-5707: An integer overflow in the SCSI generic driver could be potentially used by local attackers to crash the kernel or execute code (bsc#940338).
• CVE-2015-5364: A remote denial of service (hang) via UDP flood with incorrect package checksums was fixed. (bsc#936831).
• CVE-2015-5366: A remote denial of service (unexpected error returns) via UDP flood with incorrect package checksums was fixed. (bsc#936831).
• CVE-2015-1420: A race condition in the handle_to_path function in fs/fhandle.c in the Linux kernel allowed local users to bypass intended size restrictions and trigger read operations on additional memory locations by changing the handle_bytes value of a file handle during the execution of this function (bnc#915517).
• CVE-2015-4700: A local user could have created a bad instruction in the JIT processed BPF code, leading to a kernel crash (bnc#935705).
• CVE-2015-4167: The UDF filesystem in the Linux kernel was vulnerable to a crash which could occur while fetching inode information from a corrupted/malicious udf file system image. (bsc#933907).
• CVE-2014-9728 CVE-2014-9729 CVE-2014-9730 CVE-2014-9731: Various issues in handling UDF filesystems in the Linux kernel allowed the corruption of kernel memory and other issues. An attacker able to mount a corrupted/malicious UDF file system image could cause the kernel to crash. (bsc#933904 bsc#933896)
• CVE-2015-2150: The Linux kernel did not properly restrict access to PCI command registers, which might have allowed local guest users to cause a denial of service (non-maskable interrupt and host crash) by disabling the (1) memory or (2) I/O decoding for a PCI Express device and then accessing the device, which triggers an Unsupported Request (UR) response (bsc#919463).
• CVE-2015-0777: drivers/xen/usbback/usbback.c as used in the Linux kernel 2.6.x and 3.x in SUSE Linux distributions, allowed guest OS users to obtain sensitive information from uninitialized locations in host OS kernel memory via unspecified vectors (bnc#917830).
• CVE-2015-2830: arch/x86/kernel/entry_64.S in the Linux kernel did not prevent the TS_COMPAT flag from reaching a user-mode task, which might have allowed local users to bypass the seccomp or audit protection mechanism via a crafted application that uses the (1) fork or (2) close system call, as demonstrated by an attack against seccomp before 3.16 (bnc#926240).
• CVE-2015-1805: The Linux kernels implementation of vectored pipe read and write functionality did not take into account the I/O vectors that were already processed when retrying after a failed atomic access operation, potentially resulting in memory corruption due to an I/O vector array overrun. A local, unprivileged user could use this flaw to crash the system or, potentially, escalate their privileges on the system. (bsc#933429).

Also the following non-security bugs were fixed:

• audit: keep inode pinned (bsc#851068).
• btrfs: be aware of btree inode write errors to avoid fs corruption (bnc#942350).
• btrfs: check if previous transaction aborted to avoid fs corruption (bnc#942350).
• btrfs: deal with convert_extent_bit errors to avoid fs corruption (bnc#942350).
• cifs: Fix missing crypto allocation (bnc#937402).
• client MUST ignore EncryptionKeyLength if CAP_EXTENDED_SECURITY is set (bnc#932348).
• drm: ast,cirrus,mgag200: use drm_can_sleep (bnc#883380, bsc#935572).
• drm/cirrus: do not attempt to acquire a reservation while in an interrupt handler (bsc#935572).
• drm/mgag200: do not attempt to acquire a reservation while in an interrupt handler (bsc#935572).
• drm/mgag200: Do not do full cleanup if mgag200_device_init fails.
• ext3: Fix data corruption in inodes with journalled data (bsc#936637)
• ext4: handle SEEK_HOLE/SEEK_DATA generically (bsc#934944).
• fanotify: Fix deadlock with permission events (bsc#935053).
• fork: reset mm->pinned_vm (bnc#937855).
• hrtimer: prevent timer interrupt DoS (bnc#886785).
• hugetlb: do not account hugetlb pages as NR_FILE_PAGES (bnc#930092).
• hugetlb, kabi: do not account hugetlb pages as NR_FILE_PAGES (bnc#930092).
• IB/core: Fix mismatch between locked and pinned pages (bnc#937855).
• iommu/amd: Fix memory leak in free_pagetable (bsc#935866).
• iommu/amd: Handle integer overflow in dma_ops_area_alloc (bsc#931538).
• iommu/amd: Handle large pages correctly in free_pagetable (bsc#935866).
• ipr: Increase default adapter init stage change timeout (bsc#930761).
• ixgbe: Use pci_vfs_assigned instead of ixgbe_vfs_are_assigned (bsc#927355).
• kdump: fix crash_kexec()/smp_send_stop() race in panic() (bnc#937444).
• kernel: add panic_on_warn. (bsc#934742)
• kvm: irqchip: Break up high order allocations of kvm_irq_routing_table (bnc#926953).
• libata: prevent HSM state change race between ISR and PIO (bsc#923245).
• md: use kzalloc() when bitmap is disabled (bsc#939994).
• megaraid_sas: Use correct reset sequence in adp_reset() (bsc#894936).
• mlx4: Check for assigned VFs before disabling SR-IOV (bsc#927355).
• mm/hugetlb: check for pte NULL pointer in __page_check_address() (bnc#929143).
• mm: restrict access to slab files under procfs and sysfs (bnc#936077).
• net: fib6: fib6_commit_metrics: fix potential NULL pointer dereference (bsc#867362).
• net: Fix 'ip rule delete table 256' (bsc#873385).
• net: ipv6: fib: do not sleep inside atomic lock (bsc#867362).
• net/mlx4_core: Do not disable SRIOV if there are active VFs (bsc#927355).
• nfsd: Fix nfsv4 opcode decoding error (bsc#935906).
• nfsd: support disabling 64bit dir cookies (bnc#937503).
• nfs: never queue requests with rq_cong set on the sending queue (bsc#932458).
• nfsv4: Minor cleanups for nfs4_handle_exception and nfs4_async_handle_error (bsc#939910).
• pagecache limit: add tracepoints (bnc#924701).
• pagecache limit: Do not skip over small zones that easily (bnc#925881).
• pagecache limit: export debugging counters via /proc/vmstat (bnc#924701).
• pagecache limit: fix wrong nr_reclaimed count (bnc#924701).
• pagecache limit: reduce starvation due to reclaim retries (bnc#925903).
• pci: Add SRIOV helper function to determine if VFs are assigned to guest (bsc#927355).
• pci: Disable Bus Master only on kexec reboot (bsc#920110).
• pci: disable Bus Master on PCI device shutdown (bsc#920110).
• pci: Disable Bus Master unconditionally in pci_device_shutdown() (bsc#920110).
• pci: Don't try to disable Bus Master on disconnected PCI devices (bsc#920110).
• perf, nmi: Fix unknown NMI warning (bsc#929142).
• perf/x86/intel: Move NMI clearing to end of PMI handler (bsc#929142).
• rtlwifi: rtl8192cu: Fix kernel deadlock (bnc#927786).
• sched: fix __sched_setscheduler() vs load balancing race (bnc#921430)
• scsi_error: add missing case statements in scsi_decide_disposition() (bsc#920733).
• scsi: Set hostbyte status in scsi_check_sense() (bsc#920733).
• scsi: set host msg status correctly (bnc#933936)
• scsi: vmw_pvscsi: Fix pvscsi_abort() function (bnc#940398 bsc#930934).
• st: null pointer dereference panic caused by use after kref_put by st_open (bsc#936875).
• udf: Remove repeated loads blocksize (bsc#933907).
• usb: core: Fix USB 3.0 devices lost in NOTATTACHED state after a hub port reset (bnc#937641).
• vmxnet3: Bump up driver version number (bsc#936423).
• vmxnet3: Changes for vmxnet3 adapter version 2 (fwd) (bug#936423).
• vmxnet3: Fix memory leaks in rx path (fwd) (bug#936423).
• vmxnet3: Register shutdown handler for device (fwd) (bug#936423).
• x86/mm: Improve AMD Bulldozer ASLR workaround (bsc#937032).
• x86, tls: Interpret an all-zero struct user_desc as 'no segment' (bsc#920250).
• x86, tls, ldt: Stop checking lm in LDT_empty (bsc#920250).
• xenbus: add proper handling of XS_ERROR from Xenbus for transactions.
• xfs: avoid mounting of xfs filesystems with inconsistent option (bnc#925705)
• zcrypt: Fixed reset and interrupt handling of AP queues (bnc#936925, LTC#126491).