-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel-rt security, bug fix, and enhancement update Advisory ID: RHSA-2018:0676-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:0676 Issue date: 2018-04-10 CVE Names: CVE-2016-3672 CVE-2016-7913 CVE-2016-8633 CVE-2017-7294 CVE-2017-8824 CVE-2017-9725 CVE-2017-12154 CVE-2017-12190 CVE-2017-13166 CVE-2017-14140 CVE-2017-15116 CVE-2017-15121 CVE-2017-15126 CVE-2017-15127 CVE-2017-15129 CVE-2017-15265 CVE-2017-17053 CVE-2017-17448 CVE-2017-17449 CVE-2017-17558 CVE-2017-18017 CVE-2017-18203 CVE-2017-1000252 CVE-2017-1000407 CVE-2017-1000410 CVE-2018-5750 CVE-2018-6927 CVE-2018-1000004 ===================================================================== 1. Summary: An update for kernel-rt is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux for Real Time (v. 7) - noarch, x86_64 Red Hat Enterprise Linux for Real Time for NFV (v. 7) - noarch, x86_64 3. Description: The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): * kernel: Buffer overflow in firewire driver via crafted incoming packets (CVE-2016-8633, Important) * kernel: Use-after-free vulnerability in DCCP socket (CVE-2017-8824, Important) * Kernel: kvm: nVMX: L2 guest could access hardware(L0) CR8 register (CVE-2017-12154, Important) * kernel: v4l2: disabled memory access protection mechanism allowing privilege escalation (CVE-2017-13166, Important) * kernel: media: use-after-free in [tuner-xc2028] media driver (CVE-2016-7913, Moderate) * kernel: drm/vmwgfx: fix integer overflow in vmw_surface_define_ioctl() (CVE-2017-7294, Moderate) * kernel: Incorrect type conversion for size during dma allocation (CVE-2017-9725, Moderate) * kernel: memory leak when merging buffers in SCSI IO vectors (CVE-2017-12190, Moderate) * kernel: vfs: BUG in truncate_inode_pages_range() and fuse client (CVE-2017-15121, Moderate) * kernel: Use-after-free in userfaultfd_event_wait_completion function in userfaultfd.c (CVE-2017-15126, Moderate) * kernel: net: double-free and memory corruption in get_net_ns_by_id() (CVE-2017-15129, Moderate) * kernel: Use-after-free in snd_seq_ioctl_create_port() (CVE-2017-15265, Moderate) * kernel: Incorrect handling in arch/x86/include/asm/mmu_context.h:init_new_context function allowing use-after-free (CVE-2017-17053, Moderate) * kernel: Missing capabilities check in net/netfilter/nfnetlink_cthelper.c allows for unprivileged access to systemwide nfnl_cthelper_list structure (CVE-2017-17448, Moderate) * kernel: Missing namespace check in net/netlink/af_netlink.c allows for network monitors to observe systemwide activity (CVE-2017-17449, Moderate) * kernel: Unallocated memory access by malicious USB device via bNumInterfaces overflow (CVE-2017-17558, Moderate) * kernel: netfilter: use-after-free in tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c (CVE-2017-18017, Moderate) * kernel: Race condition in drivers/md/dm.c:dm_get_from_kobject() allows local users to cause a denial of service (CVE-2017-18203, Moderate) * kernel: kvm: Reachable BUG() on out-of-bounds guest IRQ (CVE-2017-1000252, Moderate) * Kernel: KVM: DoS via write flood to I/O port 0x80 (CVE-2017-1000407, Moderate) * kernel: Stack information leak in the EFS element (CVE-2017-1000410, Moderate) * kernel: Kernel address information leak in drivers/acpi/sbshc.c:acpi_smbus_hc_add() function potentially allowing KASLR bypass (CVE-2018-5750, Moderate) * kernel: Race condition in sound system can lead to denial of service (CVE-2018-1000004, Moderate) * kernel: unlimiting the stack disables ASLR (CVE-2016-3672, Low) * kernel: Missing permission check in move_pages system call (CVE-2017-14140, Low) * kernel: Null pointer dereference in rngapi_reset function (CVE-2017-15116, Low) * kernel: Improper error handling of VM_SHARED hugetlbfs mapping in mm/hugetlb.c (CVE-2017-15127, Low) * kernel: Integer overflow in futex.c:futux_requeue can lead to denial of service or unspecified impact (CVE-2018-6927, Low) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Red Hat would like to thank Eyal Itkin for reporting CVE-2016-8633; Mohamed Ghannam for reporting CVE-2017-8824; Jim Mattson (Google.com) for reporting CVE-2017-12154; Vitaly Mayatskih for reporting CVE-2017-12190; Andrea Arcangeli (Engineering) for reporting CVE-2017-15126; Kirill Tkhai for reporting CVE-2017-15129; Jan H. SchAPnherr (Amazon) for reporting CVE-2017-1000252; and Armis Labs for reporting CVE-2017-1000410. The CVE-2017-15121 issue was discovered by Miklos Szeredi (Red Hat) and the CVE-2017-15116 issue was discovered by ChunYu Wang (Red Hat). Additional Changes: See the Red Hat Enterprise Linux 7.5 Release Notes linked from References. 4. Solution: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. 5. Bugs fixed (https://bugzilla.redhat.com/): 1292927 - rcuc starvation leads to rcu stall 1324749 - CVE-2016-3672 kernel: unlimiting the stack disables ASLR 1391490 - CVE-2016-8633 kernel: Buffer overflow in firewire driver via crafted incoming packets 1401061 - RFE: Improve RT throttling mechanism 1402885 - CVE-2016-7913 kernel: media: use-after-free in [tuner-xc2028] media driver 1430418 - Backport "net/Qdisc: use a seqlock instead seqcount" upstream RT patch 1436798 - CVE-2017-7294 kernel: drm/vmwgfx: fix integer overflow in vmw_surface_define_ioctl() 1448770 - INFO: task xfsaild/dm-2:1175 blocked for more than 600 seconds 1452589 - Review our frequency scaling setup/tuning 1462329 - RT: update source tree to match RHEL 7.5 tree 1488329 - CVE-2017-14140 kernel: Missing permission check in move_pages system call 1489088 - CVE-2017-9725 kernel: Incorrect type conversion for size during dma allocation 1490781 - CVE-2017-1000252 kernel: kvm: Reachable BUG() on out-of-bounds guest IRQ 1491224 - CVE-2017-12154 Kernel: kvm: nVMX: L2 guest could access hardware(L0) CR8 register 1495089 - CVE-2017-12190 kernel: memory leak when merging buffers in SCSI IO vectors 1500894 - sched/rt: Simplify the IPI rt balancing logic 1501878 - CVE-2017-15265 kernel: Use-after-free in snd_seq_ioctl_create_port() 1503749 - RT + Omnipath panic 1506255 - mm: print warning when ksmd thread runs with CONFIG_PREEMPT_RT enabled 1507270 - BUG: scheduling while atomic: irq/41-megasas/562/0x00000002 1509264 - [RHEL-RT] Possible regression with NOHZ_FULL & rt_mutexes in IRQ (BZ1250649) 1514609 - CVE-2017-15116 kernel: Null pointer dereference in rngapi_reset function 1518274 - backport: c4ccd6b1ce locking/rtmutex: Prevent dequeue vs. unlock race 1518638 - CVE-2017-17053 kernel: Incorrect handling in arch/x86/include/asm/mmu_context.h:init_new_context function allowing use-after-free 1519160 - CVE-2017-1000410 kernel: Stack information leak in the EFS element 1519591 - CVE-2017-8824 kernel: Use-after-free vulnerability in DCCP socket 1520328 - CVE-2017-1000407 Kernel: KVM: DoS via write flood to I/O port 0x80 1520893 - CVE-2017-15121 kernel: vfs: BUG in truncate_inode_pages_range() and fuse client 1523481 - CVE-2017-15126 kernel: Use-after-free in userfaultfd_event_wait_completion function in userfaultfd.c 1525218 - CVE-2017-15127 kernel: Improper error handling of VM_SHARED hugetlbfs mapping in mm/hugetlb.c 1525474 - CVE-2017-17558 kernel: Unallocated memory access by malicious USB device via bNumInterfaces overflow 1525762 - CVE-2017-17449 kernel: Missing namespace check in net/netlink/af_netlink.c allows for network monitors to observe systemwide activity 1525768 - CVE-2017-17448 kernel: Missing capabilities check in net/netfilter/nfnetlink_cthelper.c allows for unprivileged access to systemwide nfnl_cthelper_list structure 1531135 - CVE-2017-18017 kernel: netfilter: use-after-free in tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c 1531174 - CVE-2017-15129 kernel: net: double-free and memory corruption in get_net_ns_by_id() 1535315 - CVE-2018-1000004 kernel: Race condition in sound system can lead to denial of service 1539706 - CVE-2018-5750 kernel: Kernel address information leak in drivers/acpi/sbshc.c:acpi_smbus_hc_add() function potentially allowing KASLR bypass 1544612 - CVE-2018-6927 kernel: Integer overflow in futex.c:futux_requeue can lead to denial of service or unspecified impact 1548412 - CVE-2017-13166 kernel: v4l2: disabled memory access protection mechanism allowing privilege escalation 1550811 - CVE-2017-18203 kernel: Race condition in drivers/md/dm.c:dm_get_from_kobject() allows local users to cause a denial of service 6. Package List: Red Hat Enterprise Linux for Real Time for NFV (v. 7): Source: kernel-rt-3.10.0-862.rt56.804.el7.src.rpm noarch: kernel-rt-doc-3.10.0-862.rt56.804.el7.noarch.rpm x86_64: kernel-rt-3.10.0-862.rt56.804.el7.x86_64.rpm kernel-rt-debug-3.10.0-862.rt56.804.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-862.rt56.804.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-862.rt56.804.el7.x86_64.rpm kernel-rt-debug-kvm-3.10.0-862.rt56.804.el7.x86_64.rpm kernel-rt-debug-kvm-debuginfo-3.10.0-862.rt56.804.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-862.rt56.804.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-862.rt56.804.el7.x86_64.rpm kernel-rt-devel-3.10.0-862.rt56.804.el7.x86_64.rpm kernel-rt-kvm-3.10.0-862.rt56.804.el7.x86_64.rpm kernel-rt-kvm-debuginfo-3.10.0-862.rt56.804.el7.x86_64.rpm kernel-rt-trace-3.10.0-862.rt56.804.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-862.rt56.804.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-862.rt56.804.el7.x86_64.rpm kernel-rt-trace-kvm-3.10.0-862.rt56.804.el7.x86_64.rpm kernel-rt-trace-kvm-debuginfo-3.10.0-862.rt56.804.el7.x86_64.rpm Red Hat Enterprise Linux for Real Time (v. 7): Source: kernel-rt-3.10.0-862.rt56.804.el7.src.rpm noarch: kernel-rt-doc-3.10.0-862.rt56.804.el7.noarch.rpm x86_64: kernel-rt-3.10.0-862.rt56.804.el7.x86_64.rpm kernel-rt-debug-3.10.0-862.rt56.804.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-862.rt56.804.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-862.rt56.804.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-862.rt56.804.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-862.rt56.804.el7.x86_64.rpm kernel-rt-devel-3.10.0-862.rt56.804.el7.x86_64.rpm kernel-rt-trace-3.10.0-862.rt56.804.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-862.rt56.804.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-862.rt56.804.el7.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2016-3672 https://access.redhat.com/security/cve/CVE-2016-7913 https://access.redhat.com/security/cve/CVE-2016-8633 https://access.redhat.com/security/cve/CVE-2017-7294 https://access.redhat.com/security/cve/CVE-2017-8824 https://access.redhat.com/security/cve/CVE-2017-9725 https://access.redhat.com/security/cve/CVE-2017-12154 https://access.redhat.com/security/cve/CVE-2017-12190 https://access.redhat.com/security/cve/CVE-2017-13166 https://access.redhat.com/security/cve/CVE-2017-14140 https://access.redhat.com/security/cve/CVE-2017-15116 https://access.redhat.com/security/cve/CVE-2017-15121 https://access.redhat.com/security/cve/CVE-2017-15126 https://access.redhat.com/security/cve/CVE-2017-15127 https://access.redhat.com/security/cve/CVE-2017-15129 https://access.redhat.com/security/cve/CVE-2017-15265 https://access.redhat.com/security/cve/CVE-2017-17053 https://access.redhat.com/security/cve/CVE-2017-17448 https://access.redhat.com/security/cve/CVE-2017-17449 https://access.redhat.com/security/cve/CVE-2017-17558 https://access.redhat.com/security/cve/CVE-2017-18017 https://access.redhat.com/security/cve/CVE-2017-18203 https://access.redhat.com/security/cve/CVE-2017-1000252 https://access.redhat.com/security/cve/CVE-2017-1000407 https://access.redhat.com/security/cve/CVE-2017-1000410 https://access.redhat.com/security/cve/CVE-2018-5750 https://access.redhat.com/security/cve/CVE-2018-6927 https://access.redhat.com/security/cve/CVE-2018-1000004 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/7.5_Release_Notes/index.html 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2018 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFazHmCXlSAg2UNWIIRAm3TAJ9SkjJqz3GMYnYsOipeN3jlNXkzeACglMfb UkloMCb6cVFY25mBfv76sd0= =fGkQ -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce