openSUSE Security Update: Security update for the Linux Kernel ______________________________________________________________________________ Announcement ID: openSUSE-SU-2017:0906-1 Rating: important References: #1019851 #1020602 #1022785 #1023377 #1025235 #1026722 #1026914 #1027066 #1027178 #1027179 #1027189 #1027190 #1027565 #1028415 #1029986 #1030118 #1030573 #968697 Cross-References: CVE-2016-10200 CVE-2016-10208 CVE-2016-2117 CVE-2017-2583 CVE-2017-2584 CVE-2017-2596 CVE-2017-2636 CVE-2017-5669 CVE-2017-6214 CVE-2017-6345 CVE-2017-6346 CVE-2017-6347 CVE-2017-6348 CVE-2017-6353 CVE-2017-7184 Affected Products: openSUSE Leap 42.1 ______________________________________________________________________________ An update that solves 15 vulnerabilities and has three fixes is now available. Description: ====================================================================== Still left to do: - Check CVE descriptions. They need to be written in the past tense. They are processed automatically, THERE CAN BE ERRORS IN THERE! - Remove version numbers from the CVE descriptions - Check the capitalization of the subsystems, then sort again - For each CVE: Check the corresponding bug if everything is okay - If you remove CVEs or bugs: Do not forget to change the meta information - Determine which of the bugs after the CVE lines is the right one ====================================================================== The openSUSE Leap 42.1 kernel was updated to 4.1.39 to receive various security and bugfixes. The following security bugs were fixed: - CVE-2017-5669: The do_shmat function in ipc/shm.c in the Linux kernel did not restrict the address calculated by a certain rounding operation, which allowed local users to map page zero, and consequently bypass a protection mechanism that exists for the mmap system call, by making crafted shmget and shmat system calls in a privileged context (bnc#1026914). - CVE-2017-6348: The hashbin_delete function in net/irda/irqueue.c in the Linux kernel improperly manages lock dropping, which allowed local users to cause a denial of service (deadlock) via crafted operations on IrDA devices (bnc#1027178). - CVE-2017-7184: The xfrm_replay_verify_len function in net/xfrm/xfrm_user.c in the Linux kernel did not validate certain size data after an XFRM_MSG_NEWAE update, which allowed local users to obtain root privileges or cause a denial of service (heap-based out-of-bounds access) by leveraging the CAP_NET_ADMIN capability, as demonstrated during a Pwn2Own competition at CanSecWest 2017 for the Ubuntu 16.10 linux-image-* package 4.8.0.41.52 (bnc#1030573). - CVE-2016-10200: Race condition in the L2TPv3 IP Encapsulation feature in the Linux kernel allowed local users to gain privileges or cause a denial of service (use-after-free) by making multiple bind system calls without properly ascertaining whether a socket has the SOCK_ZAPPED status, related to net/l2tp/l2tp_ip.c and net/l2tp/l2tp_ip6.c (bnc#1028415). - CVE-2017-2636: Race condition in drivers/tty/n_hdlc.c in the Linux kernel allowed local users to gain privileges or cause a denial of service (double free) by setting the HDLC line discipline (bnc#1027565). - CVE-2017-6345: The LLC subsystem in the Linux kernel did not ensure that a certain destructor exists in required circumstances, which allowed local users to cause a denial of service (BUG_ON) or possibly have unspecified other impact via crafted system calls (bnc#1027190). - CVE-2017-6346: Race condition in net/packet/af_packet.c in the Linux kernel allowed local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via a multithreaded application that made PACKET_FANOUT setsockopt system calls (bnc#1027189). - CVE-2017-6347: The ip_cmsg_recv_checksum function in net/ipv4/ip_sockglue.c in the Linux kernel has incorrect expectations about skb data layout, which allowed local users to cause a denial of service (buffer over-read) or possibly have unspecified other impact via crafted system calls, as demonstrated by use of the MSG_MORE flag in conjunction with loopback UDP transmission (bnc#1027179). - CVE-2017-6353: net/sctp/socket.c in the Linux kernel did not properly restrict association peel-off operations during certain wait states, which allowed local users to cause a denial of service (invalid unlock and double free) via a multithreaded application. NOTE: this vulnerability exists because of an incorrect fix for CVE-2017-5986 (bnc#1025235). - CVE-2017-6214: The tcp_splice_read function in net/ipv4/tcp.c in the Linux kernel allowed remote attackers to cause a denial of service (infinite loop and soft lockup) via vectors involving a TCP packet with the URG flag (bnc#1026722). - CVE-2016-2117: The atl2_probe function in drivers/net/ethernet/atheros/atlx/atl2.c in the Linux kernel incorrectly enables scatter/gather I/O, which allowed remote attackers to obtain sensitive information from kernel memory by reading packet data (bnc#968697). - CVE-2016-10208: The ext4_fill_super function in fs/ext4/super.c in the Linux kernel did not properly validate meta block groups, which allowed physically proximate attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image (bnc#1023377). - CVE-2017-2596: The nested_vmx_check_vmptr function in arch/x86/kvm/vmx.c in the Linux kernel improperly emulates the VMXON instruction, which allowed KVM L1 guest OS users to cause a denial of service (host OS memory consumption) by leveraging the mishandling of page references (bnc#1022785). - CVE-2017-2583: The load_segment_descriptor implementation in arch/x86/kvm/emulate.c in the Linux kernel improperly emulates a "MOV SS, NULL selector" instruction, which allowed guest OS users to cause a denial of service (guest OS crash) or gain guest OS privileges via a crafted application (bnc#1020602). - CVE-2017-2584: arch/x86/kvm/emulate.c in the Linux kernel allowed local users to obtain sensitive information from kernel memory or cause a denial of service (use-after-free) via a crafted application that leverages instruction emulation for fxrstor, fxsave, sgdt, and sidt (bnc#1019851). The following non-security bugs were fixed: - Fix kABI breakage of musb struct in 4.1.39 (stable 4.1.39). - Revert "ptrace: Capture the ptracer's creds not PT_PTRACE_CAP" (stable 4.1.39). - ext4: fix fencepost in s_first_meta_bg validation (bsc#1029986). - ext4: validate s_first_meta_bg at mount time (bsc#1023377). - kabi/severities: Ignore x86/kvm kABI changes for 4.1.39 - l2tp: fix address test in __l2tp_ip6_bind_lookup() (bsc#1028415). - l2tp: fix lookup for sockets not bound to a device in l2tp_ip (bsc#1028415). - l2tp: fix racy socket lookup in l2tp_ip and l2tp_ip6 bind() (bsc#1028415). - l2tp: hold socket before dropping lock in l2tp_ip{, 6}_recv() (bsc#1028415). - l2tp: lock socket before checking flags in connect() (bsc#1028415). - mm/huge_memory.c: respect FOLL_FORCE/FOLL_COW for thp (bsc#1030118). Patch Instructions: To install this openSUSE Security Update use YaST online_update. Alternatively you can run the command listed for your product: - openSUSE Leap 42.1: zypper in -t patch openSUSE-2017-419=1 To bring your system up-to-date, use "zypper patch". Package List: - openSUSE Leap 42.1 (i586 x86_64): kernel-default-4.1.39-53.1 kernel-default-base-4.1.39-53.1 kernel-default-base-debuginfo-4.1.39-53.1 kernel-default-debuginfo-4.1.39-53.1 kernel-default-debugsource-4.1.39-53.1 kernel-default-devel-4.1.39-53.1 kernel-obs-build-4.1.39-53.1 kernel-obs-build-debugsource-4.1.39-53.1 kernel-obs-qa-4.1.39-53.1 kernel-syms-4.1.39-53.1 - openSUSE Leap 42.1 (i686 x86_64): kernel-debug-4.1.39-53.1 kernel-debug-base-4.1.39-53.1 kernel-debug-base-debuginfo-4.1.39-53.1 kernel-debug-debuginfo-4.1.39-53.1 kernel-debug-debugsource-4.1.39-53.1 kernel-debug-devel-4.1.39-53.1 kernel-debug-devel-debuginfo-4.1.39-53.1 kernel-ec2-4.1.39-53.1 kernel-ec2-base-4.1.39-53.1 kernel-ec2-base-debuginfo-4.1.39-53.1 kernel-ec2-debuginfo-4.1.39-53.1 kernel-ec2-debugsource-4.1.39-53.1 kernel-ec2-devel-4.1.39-53.1 kernel-pv-4.1.39-53.1 kernel-pv-base-4.1.39-53.1 kernel-pv-base-debuginfo-4.1.39-53.1 kernel-pv-debuginfo-4.1.39-53.1 kernel-pv-debugsource-4.1.39-53.1 kernel-pv-devel-4.1.39-53.1 kernel-vanilla-4.1.39-53.1 kernel-vanilla-debuginfo-4.1.39-53.1 kernel-vanilla-debugsource-4.1.39-53.1 kernel-vanilla-devel-4.1.39-53.1 kernel-xen-4.1.39-53.1 kernel-xen-base-4.1.39-53.1 kernel-xen-base-debuginfo-4.1.39-53.1 kernel-xen-debuginfo-4.1.39-53.1 kernel-xen-debugsource-4.1.39-53.1 kernel-xen-devel-4.1.39-53.1 - openSUSE Leap 42.1 (noarch): kernel-devel-4.1.39-53.1 kernel-docs-4.1.39-53.2 kernel-docs-html-4.1.39-53.2 kernel-docs-pdf-4.1.39-53.2 kernel-macros-4.1.39-53.1 kernel-source-4.1.39-53.1 kernel-source-vanilla-4.1.39-53.1 - openSUSE Leap 42.1 (i686): kernel-pae-4.1.39-53.1 kernel-pae-base-4.1.39-53.1 kernel-pae-base-debuginfo-4.1.39-53.1 kernel-pae-debuginfo-4.1.39-53.1 kernel-pae-debugsource-4.1.39-53.1 kernel-pae-devel-4.1.39-53.1 References: https://www.suse.com/security/cve/CVE-2016-10200.html https://www.suse.com/security/cve/CVE-2016-10208.html https://www.suse.com/security/cve/CVE-2016-2117.html https://www.suse.com/security/cve/CVE-2017-2583.html https://www.suse.com/security/cve/CVE-2017-2584.html https://www.suse.com/security/cve/CVE-2017-2596.html https://www.suse.com/security/cve/CVE-2017-2636.html https://www.suse.com/security/cve/CVE-2017-5669.html https://www.suse.com/security/cve/CVE-2017-6214.html https://www.suse.com/security/cve/CVE-2017-6345.html https://www.suse.com/security/cve/CVE-2017-6346.html https://www.suse.com/security/cve/CVE-2017-6347.html https://www.suse.com/security/cve/CVE-2017-6348.html https://www.suse.com/security/cve/CVE-2017-6353.html https://www.suse.com/security/cve/CVE-2017-7184.html https://bugzilla.suse.com/1019851 https://bugzilla.suse.com/1020602 https://bugzilla.suse.com/1022785 https://bugzilla.suse.com/1023377 https://bugzilla.suse.com/1025235 https://bugzilla.suse.com/1026722 https://bugzilla.suse.com/1026914 https://bugzilla.suse.com/1027066 https://bugzilla.suse.com/1027178 https://bugzilla.suse.com/1027179 https://bugzilla.suse.com/1027189 https://bugzilla.suse.com/1027190 https://bugzilla.suse.com/1027565 https://bugzilla.suse.com/1028415 https://bugzilla.suse.com/1029986 https://bugzilla.suse.com/1030118 https://bugzilla.suse.com/1030573 https://bugzilla.suse.com/968697