ID

VAR-201808-1002

CVE

CVE-2018-5390

TITLE

TCP implementations vulnerable to Denial of Service

DESCRIPTION

Linux kernel versions 4.9+ can be forced to make very expensive calls to tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() for every incoming packet which can lead to a denial of service. Description: The RHV-M Virtual Appliance automates the process of installing and configuring the Red Hat Virtualization Manager. The appliance is available to download as an OVA file from the Customer Portal. Security Fix(es): * Modern operating systems implement virtualization of physical memory to efficiently use available system resources and provide inter-domain protection through access control and isolation. Software Description: - linux: Linux kernel Details: The sr_do_ioctl function in drivers/scsi/sr_ioctl.c in the Linux kernel through 4.16.12 allows local users to cause a denial of service (stack-based buffer overflow) or possibly have unspecified other impact because sense buffers have different sizes at the CDROM layer and the SCSI layer, as demonstrated by a CDROMREADMODE2 ioctl call. (CVE-2018-11506) Wen Xu discovered that the ext4 file system implementation in the Linux kernel did not properly initialize the crc32c checksum driver. (CVE-2018-1094) The inode_init_owner function in fs/inode.c in the Linux kernel through 4.17.4 allows local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID. An OOPS may occur for a corrupted xfs image after xfs_da_shrink_inode() is called with a NULL bp. (CVE-2018-5390) Update instructions: The problem can be corrected by updating your livepatches to the following versions: | Kernel | Version | flavors | |--------------------------+----------+--------------------------| | 4.4.0-124.148 | 41.2 | lowlatency, generic | | 4.4.0-124.148~14.04.1 | 41.2 | generic, lowlatency | | 4.4.0-127.153 | 41.2 | lowlatency, generic | | 4.4.0-127.153~14.04.1 | 41.2 | lowlatency, generic | | 4.4.0-128.154 | 41.2 | generic, lowlatency | | 4.4.0-128.154~14.04.1 | 41.2 | generic, lowlatency | | 4.4.0-130.156 | 41.2 | generic, lowlatency | | 4.4.0-130.156~14.04.1 | 41.2 | lowlatency, generic | | 4.4.0-131.157 | 41.2 | lowlatency, generic | | 4.4.0-131.157~14.04.1 | 41.2 | lowlatency, generic | | 4.15.0-20.21 | 41.2 | generic, lowlatency | | 4.15.0-22.24 | 41.2 | lowlatency, generic | | 4.15.0-23.25 | 41.2 | lowlatency, generic | | 4.15.0-24.26 | 41.2 | lowlatency, generic | | 4.15.0-29.31 | 41.2 | generic, lowlatency | References: CVE-2018-11506, CVE-2018-1094, CVE-2018-13405, CVE-2018-13094, CVE-2018-5390 -- ubuntu-security-announce mailing list ubuntu-security-announce@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security-announce . 7) - aarch64, noarch, ppc64le 3. Security Fix(es): * An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of Load & Store instructions (a commonly used performance optimization). It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory read from address to which a recent memory write has occurred may see an older value and subsequently cause an update into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to read privileged memory by conducting targeted cache side-channel attacks. (CVE-2018-5391) Space precludes documenting all of the security fixes in this advisory. See the descriptions of the remaining security fixes in the related Knowledge Article: https://access.redhat.com/articles/3658021 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. Bugs fixed (https://bugzilla.redhat.com/): 1516257 - CVE-2017-16648 kernel: Use-after-free in drivers/media/dvb-core/dvb_frontend.c 1528312 - CVE-2017-17805 kernel: Salsa20 encryption algorithm does not correctly handle zero-length inputs allowing local attackers to cause denial-of-service 1528323 - CVE-2017-17806 kernel: HMAC implementation does not validate that the underlying cryptographic hash algorithm is unkeyed allowing local attackers to cause denial-of-service 1533909 - CVE-2018-5344 kernel: drivers/block/loop.c mishandles lo_release serialization allowing denial-of-service 1539508 - CVE-2017-18075 kernel: Mishandled freeing of instances in pcrypt.c can allow a local user to cause a 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 1541846 - CVE-2018-1000026 kernel: Improper validation in bnx2x network card driver can allow for denial of service attacks via crafted packet 1547824 - CVE-2018-1065 kernel: netfilter: xtables NULL pointer dereference in ip6_tables.c:ip6t_do_table() leading to a crash 1548412 - CVE-2017-13166 kernel: v4l2: disabled memory access protection mechanism allowing privilege escalation 1550142 - CVE-2018-7566 kernel: race condition in snd_seq_write() may lead to UAF or OOB-access 1551051 - CVE-2018-5803 kernel: Missing length check of payload in net/sctp/sm_make_chunk.c:_sctp_make_chunk() function allows denial of service 1551565 - CVE-2017-18208 kernel: Inifinite loop vulnerability in mm/madvise.c:madvise_willneed() function allows local denial of service 1552048 - CVE-2018-1068 kernel: Out-of-bounds write via userland offsets in ebt_entry struct in netfilter/ebtables.c 1553361 - CVE-2018-7757 kernel: Memory leak in the sas_smp_get_phy_events function in drivers/scsi/libsas/sas_expander.c 1560777 - CVE-2018-1092 kernel: NULL pointer dereference in ext4/mballoc.c:ext4_process_freed_data() when mounting crafted ext4 image 1560788 - CVE-2018-1094 kernel: NULL pointer dereference in ext4/xattr.c:ext4_xattr_inode_hash() causes crash with crafted ext4 image 1560793 - CVE-2018-1095 kernel: out-of-bound access in fs/posix_acl.c:get_acl() causes crash with crafted ext4 image 1566890 - CVE-2018-3639 hw: cpu: speculative store bypass 1568744 - CVE-2018-1000200 kernel: NULL pointer dereference on OOM kill of large mlocked process 1571062 - CVE-2018-8781 kernel: Integer overflow in drivers/gpu/drm/udl/udl_fb.c:udl_fb_mmap() can allow attackers to execute code in kernel space 1571623 - CVE-2018-10322 kernel: Invalid pointer dereference in xfs_ilock_attr_map_shared() when mounting crafted xfs image allowing denial of service 1573699 - CVE-2018-1118 kernel: vhost: Information disclosure in vhost/vhost.c:vhost_new_msg() 1575472 - CVE-2018-1120 kernel: fuse-backed file mmap-ed onto process cmdline arguments causes denial of service 1577408 - CVE-2018-10940 kernel: incorrect memory bounds check in drivers/cdrom/cdrom.c 1583210 - CVE-2018-11506 kernel: Stack-based buffer overflow in drivers/scsi/sr_ioctl.c allows denial of service or other unspecified impact 1589324 - CVE-2018-1000204 kernel: Infoleak caused by incorrect handling of the SG_IO ioctl 1590215 - CVE-2018-12232 kernel: NULL pointer dereference if close and fchownat system calls share a socket file descriptor 1590799 - CVE-2018-5848 kernel: buffer overflow in drivers/net/wireless/ath/wil6210/wmi.c:wmi_set_ie() may lead to memory corruption 1596795 - CVE-2018-10877 kernel: out-of-bound access in ext4_ext_drop_refs function with a crafted ext4 image 1596802 - CVE-2018-10878 kernel: out-of-bound write in ext4_init_block_bitmap function with a crafted ext4 image 1596806 - CVE-2018-10879 kernel: use-after-free detected in ext4_xattr_set_entry with a crafted file 1596812 - CVE-2018-10880 kernel: stack-out-of-bounds write in ext4_update_inline_data function 1596828 - CVE-2018-10881 kernel: out-of-bound access in ext4_get_group_info() when mounting and operating a crafted ext4 image 1596842 - CVE-2018-10882 kernel: stack-out-of-bounds write infs/jbd2/transaction.c 1596846 - CVE-2018-10883 kernel: stack-out-of-bounds write in jbd2_journal_dirty_metadata function 1599161 - CVE-2018-13405 kernel: Missing check in fs/inode.c:inode_init_owner() does not clear SGID bit on non-directories for non-members 1601704 - CVE-2018-5390 kernel: TCP segments with random offsets allow a remote denial of service (SegmentSmack) 1609664 - CVE-2018-5391 kernel: IP fragments with random offsets allow a remote denial of service (FragmentSmack) 1610958 - CVE-2017-18344 kernel: out-of-bounds access in the show_timer function in kernel/time/posix-timers.c 1622004 - CVE-2018-14619 kernel: crash (possible privesc) in kernel crypto api. 1623067 - CVE-2018-9363 kernel: Buffer overflow in hidp_process_report 1629636 - CVE-2018-14641 kernel: a bug in ip_frag_reasm() can cause a crash in ip_do_fragment() 6. For the stable distribution (stretch), these problems have been fixed in version 4.9.110-3+deb9u1. For the detailed security status of linux please refer to its security tracker page at: https://security-tracker.debian.org/tracker/linux Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: debian-security-announce@lists.debian.org -----BEGIN PGP SIGNATURE----- iQKTBAEBCgB9FiEERkRAmAjBceBVMd3uBUy48xNDz0QFAltolY5fFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldDQ2 NDQ0MDk4MDhDMTcxRTA1NTMxRERFRTA1NENCOEYzMTM0M0NGNDQACgkQBUy48xND z0T1cBAAhxrsiYuYMiQj9x+shNxxp6gWEXpDoOCwU0cXzZ2lii2uSPzP5TsIQey3 3nBjPCZthg8Q0fL2m0thbfS+i1HTT9tlJT7EjBGDjA0jm2o/lQCmH5rp8DDPtbwZ 2iZ9HyfosEFnbCd6VHtWIM3NoGZFUjvBWkb29/op800BqkHk69WchT1ZWSE8G85S NAwG7tf/mfWIc0nYgieFo9i2X2bk0mNUOjC8xnVnK2TZY5jzK7f9fmQzdPAglZaI t1UoQS4PMl6UTi7AJephorP6+6KJPg3n0rCgJYYXtnRO4PilSLveg7dNniKpCaDo jJKVIcug8Hqo1zc6Uk0tgdZBPILZULyMGr7XUJ97cyA6i+9xhDpGPmqH6pbWQ+YZ JplAY4PHZ2PUi+6is4LE7kYQfPk8+KvvshUB8Qr2Xa61GUDcgpdcaTmNmFYH3EAF St27o/Nbs8WsKNzkOMxtyva88YJr7RDHr+nX/I1fKlI8zC8k3gHYYtJ11QhCDWKT 1O42ppxxaBUMo5ns0ZCjNBaMFPTaKrDYocAzhVot94I2++8InhFWbAzRq7B44fKe E4Q6jDXY3x5MexSyZG3sGc6EwUtr/Gr8trB4TZkvNrQtZ9WBh28TOsldecGsncqw I62eV7vx701dQDjtcDy/yZlGDjFTULQkyX8GPL9hIBeRjCFRhrA= =h8it -----END PGP SIGNATURE----- . -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2018:2776-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:2776 Issue date: 2018-09-25 CVE Names: CVE-2018-5390 ==================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 7.4 Extended Update Support. 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 ComputeNode EUS (v. 7.4) - noarch, x86_64 Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4) - x86_64 Red Hat Enterprise Linux Server EUS (v. 7.4) - noarch, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional EUS (v. 7.4) - ppc64, ppc64le, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * A flaw named SegmentSmack was found in the way the Linux kernel handled specially crafted TCP packets. A remote attacker could use this flaw to trigger time and calculation expensive calls to tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() functions by sending specially modified packets within ongoing TCP sessions which could lead to a CPU saturation and hence a denial of service on the system. Maintaining the denial of service condition requires continuous two-way TCP sessions to a reachable open port, thus the attacks cannot be performed using spoofed IP addresses. (CVE-2018-5390) Red Hat would like to thank Juha-Matti Tilli (Aalto University - Department of Communications and Networking and Nokia Bell Labs) for reporting this issue. Bug Fix(es): * Previously, making the total buffer size bigger than the memory size for early allocation through the trace_buf_size boot option, made the system become unresponsive at the boot stage. This update introduces a change in the early memory allocation. As a result, the system no longer hangs in the above described scenario. (BZ#1588365) * When inserting objects with the same keys, made the rhlist implementation corrupt the chain pointers. As a consequence, elements were missing on removal and traversal. This patch updates the chain pointers correctly. As a result, there are no missing elements on removal and traversal in the above-described scenario. (BZ#1601008) * Previously, the kernel source code was missing support to report the Speculative Store Bypass Disable (SSBD) vulnerability status on IBM Power Systems and the little-endian variants of IBM Power Systems. As a consequence, the /sys/devices/system/cpu/vulnerabilities/spec_store_bypass file incorrectly reported "Not affected" on both CPU architectures. This fix updates the kernel source code to properly report the SSBD status either as "Vulnerable" or "Mitigation: Kernel entry/exit barrier (TYPE)" where TYPE is one of "eieio", "hwsync", "fallback", or "unknown". (BZ#1612352) * Previously, the early microcode updater in the kernel was trying to perform a microcode update on virtualized guests. As a consequence, the virtualized guests sometimes mishandled the request to perform the microcode update and became unresponsive in the early boot stage. This update applies an upstream patch to avoid the early microcode update when running under a hypervisor. As a result, no kernel freezes appear in the described scenario. (BZ#1618389) 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/): 1601704 - CVE-2018-5390 kernel: TCP segments with random offsets allow a remote denial of service (SegmentSmack) 6. Package List: Red Hat Enterprise Linux ComputeNode EUS (v. 7.4): Source: kernel-3.10.0-693.39.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-693.39.1.el7.noarch.rpm kernel-doc-3.10.0-693.39.1.el7.noarch.rpm x86_64: kernel-3.10.0-693.39.1.el7.x86_64.rpm kernel-debug-3.10.0-693.39.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.39.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.39.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.39.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.39.1.el7.x86_64.rpm kernel-devel-3.10.0-693.39.1.el7.x86_64.rpm kernel-headers-3.10.0-693.39.1.el7.x86_64.rpm kernel-tools-3.10.0-693.39.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.39.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.39.1.el7.x86_64.rpm perf-3.10.0-693.39.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.39.1.el7.x86_64.rpm python-perf-3.10.0-693.39.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.39.1.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4): x86_64: kernel-debug-debuginfo-3.10.0-693.39.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.39.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.39.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.39.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.39.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.39.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.39.1.el7.x86_64.rpm Red Hat Enterprise Linux Server EUS (v. 7.4): Source: kernel-3.10.0-693.39.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-693.39.1.el7.noarch.rpm kernel-doc-3.10.0-693.39.1.el7.noarch.rpm ppc64: kernel-3.10.0-693.39.1.el7.ppc64.rpm kernel-bootwrapper-3.10.0-693.39.1.el7.ppc64.rpm kernel-debug-3.10.0-693.39.1.el7.ppc64.rpm kernel-debug-debuginfo-3.10.0-693.39.1.el7.ppc64.rpm kernel-debug-devel-3.10.0-693.39.1.el7.ppc64.rpm kernel-debuginfo-3.10.0-693.39.1.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-693.39.1.el7.ppc64.rpm kernel-devel-3.10.0-693.39.1.el7.ppc64.rpm kernel-headers-3.10.0-693.39.1.el7.ppc64.rpm kernel-tools-3.10.0-693.39.1.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-693.39.1.el7.ppc64.rpm kernel-tools-libs-3.10.0-693.39.1.el7.ppc64.rpm perf-3.10.0-693.39.1.el7.ppc64.rpm perf-debuginfo-3.10.0-693.39.1.el7.ppc64.rpm python-perf-3.10.0-693.39.1.el7.ppc64.rpm python-perf-debuginfo-3.10.0-693.39.1.el7.ppc64.rpm ppc64le: kernel-3.10.0-693.39.1.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-693.39.1.el7.ppc64le.rpm kernel-debug-3.10.0-693.39.1.el7.ppc64le.rpm kernel-debug-debuginfo-3.10.0-693.39.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-693.39.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-693.39.1.el7.ppc64le.rpm kernel-devel-3.10.0-693.39.1.el7.ppc64le.rpm kernel-headers-3.10.0-693.39.1.el7.ppc64le.rpm kernel-tools-3.10.0-693.39.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-693.39.1.el7.ppc64le.rpm kernel-tools-libs-3.10.0-693.39.1.el7.ppc64le.rpm perf-3.10.0-693.39.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-693.39.1.el7.ppc64le.rpm python-perf-3.10.0-693.39.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-693.39.1.el7.ppc64le.rpm s390x: kernel-3.10.0-693.39.1.el7.s390x.rpm kernel-debug-3.10.0-693.39.1.el7.s390x.rpm kernel-debug-debuginfo-3.10.0-693.39.1.el7.s390x.rpm kernel-debug-devel-3.10.0-693.39.1.el7.s390x.rpm kernel-debuginfo-3.10.0-693.39.1.el7.s390x.rpm kernel-debuginfo-common-s390x-3.10.0-693.39.1.el7.s390x.rpm kernel-devel-3.10.0-693.39.1.el7.s390x.rpm kernel-headers-3.10.0-693.39.1.el7.s390x.rpm kernel-kdump-3.10.0-693.39.1.el7.s390x.rpm kernel-kdump-debuginfo-3.10.0-693.39.1.el7.s390x.rpm kernel-kdump-devel-3.10.0-693.39.1.el7.s390x.rpm perf-3.10.0-693.39.1.el7.s390x.rpm perf-debuginfo-3.10.0-693.39.1.el7.s390x.rpm python-perf-3.10.0-693.39.1.el7.s390x.rpm python-perf-debuginfo-3.10.0-693.39.1.el7.s390x.rpm x86_64: kernel-3.10.0-693.39.1.el7.x86_64.rpm kernel-debug-3.10.0-693.39.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.39.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.39.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.39.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.39.1.el7.x86_64.rpm kernel-devel-3.10.0-693.39.1.el7.x86_64.rpm kernel-headers-3.10.0-693.39.1.el7.x86_64.rpm kernel-tools-3.10.0-693.39.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.39.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.39.1.el7.x86_64.rpm perf-3.10.0-693.39.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.39.1.el7.x86_64.rpm python-perf-3.10.0-693.39.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.39.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional EUS (v. 7.4): ppc64: kernel-debug-debuginfo-3.10.0-693.39.1.el7.ppc64.rpm kernel-debuginfo-3.10.0-693.39.1.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-693.39.1.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-693.39.1.el7.ppc64.rpm kernel-tools-libs-devel-3.10.0-693.39.1.el7.ppc64.rpm perf-debuginfo-3.10.0-693.39.1.el7.ppc64.rpm python-perf-debuginfo-3.10.0-693.39.1.el7.ppc64.rpm ppc64le: kernel-debug-debuginfo-3.10.0-693.39.1.el7.ppc64le.rpm kernel-debug-devel-3.10.0-693.39.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-693.39.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-693.39.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-693.39.1.el7.ppc64le.rpm kernel-tools-libs-devel-3.10.0-693.39.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-693.39.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-693.39.1.el7.ppc64le.rpm x86_64: kernel-debug-debuginfo-3.10.0-693.39.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.39.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.39.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.39.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.39.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.39.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.39.1.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-2018-5390 https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2018 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBW6qe0NzjgjWX9erEAQifnQ//Yjt7BtzIu5kCLW7RctFFx62Ny8fJUuZ0 sLah6bMbzFmLPMvHLyrOY7W532MtFMuObhzumKzSlprP0eGYNmlz9XAxTrYD63bQ RRBHqyT0cjFYxRrtJx4S7oriE3x2jRmrcRFlmlN8Bl18XO+fieihrOH547AmXlrl eb/n0g//94pEfXiIbh9UWOqCw5jWTpk0R46Tl/i+ky4SrysGDDd1SzWP8+hnE+ps BSDZD6ubYM2T7qunnYZ0Ci7LbfMxFNtLedZvG9dO8Ywlqfif5RNNFXfXp7WvYRzb RBzcrSX+FdtY/XCn7ov3WkH32kadtx2Q7vvrA/eLdwYt+6BaGKMmU7yc+zOIsZpA 2uJUO7AYm3p9J4SW4hpxmuw3er4g+bSHGuXg8Nz6kWVyWrMzILAXQYDUDwI66rTy EZXbRaOJCFY3+vYSHKAcZRHnroSOsIq/EotegjqFN4fcSVMSNNlOeoRop7pr3kQq eWlpbaDcWiE7CA5camN4aO0doj25vIdIyT4E8B+QBP7AC5FcF94CpQkyb2htut5o 0usFXhzZSze2MxeECwIf74/1QrF+kcgcLbwBJw/k0COoJ0qLTnEOsAjMJNNR4+0N JrZ2SQAwYs/QbIGVJTGvyfVhNYnnr+EW5/nrBiZU6DokA3q6rEI/Tg4Q8OIx0wwX j4HjKybGYpU:wj -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . ========================================================================== Ubuntu Security Notice USN-3742-3 August 21, 2018 linux-lts-trusty regressions ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 12.04 ESM Summary: USN-3742-2 introduced regressions in the Linux Hardware Enablement (HWE) kernel for Ubuntu 12.04 ESM. Software Description: - linux-lts-trusty: Linux hardware enablement kernel from Trusty for Precise ESM Details: USN-3742-2 introduced mitigations in the Linux Hardware Enablement (HWE) kernel for Ubuntu 12.04 ESM to address L1 Terminal Fault (L1TF) vulnerabilities (CVE-2018-3620, CVE-2018-3646). Unfortunately, the update introduced regressions that caused kernel panics when booting in some environments as well as preventing Java applications from starting. This update fixes the problems. We apologize for the inconvenience. Original advisory details: It was discovered that memory present in the L1 data cache of an Intel CPU core may be exposed to a malicious process that is executing on the CPU core. This vulnerability is also known as L1 Terminal Fault (L1TF). A local attacker in a guest virtual machine could use this to expose sensitive information (memory from other guests or the host OS). (CVE-2018-3646) It was discovered that memory present in the L1 data cache of an Intel CPU core may be exposed to a malicious process that is executing on the CPU core. This vulnerability is also known as L1 Terminal Fault (L1TF). (CVE-2018-3620) Andrey Konovalov discovered an out-of-bounds read in the POSIX timers subsystem in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or expose sensitive information. A remote attacker could use this to cause a denial of service. A remote attacker could use this to cause a denial of service. (CVE-2018-5391) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 12.04 ESM: linux-image-3.13.0-156-generic 3.13.0-156.206~precise1 linux-image-3.13.0-156-generic-lpae 3.13.0-156.206~precise1 linux-image-generic-lpae-lts-trusty 3.13.0.156.146 linux-image-generic-lts-trusty 3.13.0.156.146 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

resource management error

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Juha-Matti Tilli

SOURCES

LAST UPDATE DATE

2025-12-17T21:35:34.142000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE