Explore top 10 tips to secure your open-source projects now. Read More

×
Alerts This Week
Warning Icon 1 591
Alerts This Week
Warning Icon 1 591

Important Kernel Update for Red Hat Enterprise Linux 7 Addresses DoS Risk

red hat
Calendar Grey August 6, 2019
Dist Redhat Esm H88
Latest kernel security patch for Red Hat Enterprise Linux 7 resolves critical vulnerabilities and boosts overall system performance.
An update for kernel is now available for Red Hat Enterprise Linux 7

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.

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* Kernel: vhost_net: infinite loop while receiving packets leads to DoS (CVE-2019-3900)
* Kernel: page cache side channel attacks (CVE-2019-5489)
* kernel: Buffer overflow in hidp_process_report (CVE-2018-9363)
* kernel: l2tp: Race condition between pppol2tp_session_create() and l2tp_eth_create() (CVE-2018-9517)
* kernel: kvm: guest userspace to guest kernel write (CVE-2018-10853)
* kernel: use-after-free Read in vhost_transport_send_pkt (CVE-2018-14625)
* kernel: use-after-free in ucma_leave_multicast in drivers/infiniband/core/ucma.c (CVE-2018-14734)
* kernel: Mishandling of indirect calls weakens Spectre mitigation for paravirtual guests (CVE-2018-15594)
* kernel: TLB flush happens too late on mremap (CVE-2018-18281)
* kernel: Heap address information leak while using L2CAP_GET_CONF_OPT (CVE-2019-3459)
* kernel: Heap address information leak while using L2CAP_PARSE_CONF_RSP (CVE-2019-3460)
* kernel: denial of service vector through vfio DMA mappings (CVE-2019-3882)
* kernel: fix race condition between mmget_not_zero()/get_task_mm() and core dumping (CVE-2019-11599)
* kernel: a NULL pointer dereference in drivers/scsi/megaraid/megaraid_sas_base.c leading to DoS (CVE-2019-11810)
* kernel: fs/ext4/extents.c leads to information disclosure (CVE-2019-11833)
* kernel: Information exposure in fd_locked_ioctl function in drivers/block/floppy.c (CVE-2018-7755)
* kernel: Memory leak in drivers/net/wireless/mac80211_hwsim.c:hwsim_new_radio_nl() can lead to potential denial of service (CVE-2018-8087)
* kernel: HID: debug: Buffer overflow in hid_debug_events_read() in drivers/hid/hid-debug.c (CVE-2018-9516)
* kernel: Integer overflow in the alarm_timer_nsleep function (CVE-2018-13053)
* kernel: NULL pointer dereference in lookup_slow function (CVE-2018-13093)
* kernel: NULL pointer dereference in xfs_da_shrink_inode function (CVE-2018-13094)
* kernel: NULL pointer dereference in fs/xfs/libxfs/xfs_inode_buf.c (CVE-2018-13095)
* kernel: Information leak in cdrom_ioctl_drive_status (CVE-2018-16658)
* kernel: out-of-bound read in memcpy_fromiovecend() (CVE-2018-16885)
* Kernel: KVM: leak of uninitialized stack contents to guest (CVE-2019-7222)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.7 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory Red Hat kernel update bug fix DoS important information disclosure

References

https://access.redhat.com/security/cve/CVE-2018-7755 https://access.redhat.com/security/cve/CVE-2018-8087 https://access.redhat.com/security/cve/CVE-2018-9363 https://access.redhat.com/security/cve/CVE-2018-9516 https://access.redhat.com/security/cve/CVE-2018-9517 https://access.redhat.com/security/cve/CVE-2018-10853 https://access.redhat.com/security/cve/CVE-2018-13053 https://access.redhat.com/security/cve/CVE-2018-13093 https://access.redhat.com/security/cve/CVE-2018-13094 https://access.redhat.com/security/cve/CVE-2018-13095 https://access.redhat.com/security/cve/CVE-2018-14625 https://access.redhat.com/security/cve/CVE-2018-14734 https://access.redhat.com/security/cve/CVE-2018-15594 https://access.redhat.com/security/cve/CVE-2018-16658 https://access.redhat.com/security/cve/CVE-2018-16885 https://access.redhat.com/security/cve/CVE-2018-18281 https://access.redhat.com/security/cve/CVE-2019-3459 https://access.redhat.com/security/cve/CVE-2019-3460 https://access.redhat.com/security/cve/CVE-2019-3882 https://access.redhat.com/security/cve/CVE-2019-3900 https://access.redhat.com/security/cve/CVE-2019-5489 https://access.redhat.com/security/cve/CVE-2019-7222 https://access.redhat.com/security/cve/CVE-2019-11599 https://access.redhat.com/security/cve/CVE-2019-11810 Read the Full Advisory

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: kernel-3.10.0-1062.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-1062.el7.noarch.rpm kernel-doc-3.10.0-1062.el7.noarch.rpm
x86_64: bpftool-3.10.0-1062.el7.x86_64.rpm bpftool-debuginfo-3.10.0-1062.el7.x86_64.rpm kernel-3.10.0-1062.el7.x86_64.rpm kernel-debug-3.10.0-1062.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1062.el7.x86_64.rpm kernel-debug-devel-3.10.0-1062.el7.x86_64.rpm kernel-debuginfo-3.10.0-1062.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-1062.el7.x86_64.rpm kernel-devel-3.10.0-1062.el7.x86_64.rpm kernel-headers-3.10.0-1062.el7.x86_64.rpm kernel-tools-3.10.0-1062.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-1062.el7.x86_64.rpm kernel-tools-libs-3.10.0-1062.el7.x86_64.rpm perf-3.10.0-1062.el7.x86_64.rpm perf-debuginfo-3.10.0-1062.el7.x86_64.rpm python-perf-3.10.0-1062.el7.x86_64.rpm python-perf-debuginfo-3.10.0-1062.el7.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: bpftool-debuginfo-3.10.0-1062.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1062.el7.x86_64.rpm kernel-debuginfo-3.10.0-1062.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-1062.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-1062.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-1062.el7.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2019:2029-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:2029
Issue date: 2019-08-06

Topic

An update for kernel is now available for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat kernel update bug fix DoS important information disclosure

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

Bugs Fixed

1335986 - BUG: memory allocation failure in inode_doinit_with_dentry()/context_to_sid()

1436351 - [nohz]: wrong user and system time accounting

1537033 - [RHEL7.6] BUG_ON(s->uptodate < disks - 1) condition encountered in RAID6 array with 6 disks and while one disk had failed.

1552203 - RHEL7.4 NFS4.1 client and server repeated SEQUENCE / TEST_STATEIDs with SEQUENCE Reply has SEQ4_STATUS_RECALLABLE_STATE_REVOKED set - NFS server should return NFS4ERR_DELEG_REVOKED or NFS4ERR_BAD_STATEID for revoked delegations

1553216 - CVE-2018-7755 kernel: Information exposure in fd_locked_ioctl function in drivers/block/floppy.c

1555145 - CVE-2018-8087 kernel: Memory leak in drivers/net/wireless/mac80211_hwsim.c:hwsim_new_radio_nl() can lead to potential denial of service

1577640 - getdents on cifs with 4k buffer loses files

1589890 - CVE-2018-10853 kernel: kvm: guest userspace to guest kernel write

1590228 - kernel: openat with O_TMPFILE and mode 0 fails with EACCES (if not root)

1593417 - [mm] kernel BUG at lib/idr.c:1157, kmemcg_id is -1 when creating or destroying mem cgroups

1597747 - CVE-2018-13053 kernel: Integer overflow in the alarm_timer_nsleep function

1597766 - CVE-2018-13093 kernel: NULL pointer dereference in lookup_slow function

1597771 - CVE-2018-13094 kernel: NULL pointer dereference in xfs_da_shrink_inode function

Read the Full Advisory

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.