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redhatRedHatRHSA-2019:0833
HistoryApr 23, 2019 - 12:42 p.m.

(RHSA-2019:0833) Important: kernel-rt security and bug fix update

2019-04-2312:42:49
access.redhat.com
104

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

0.036 Low

EPSS

Percentile

91.5%

JSON

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: KVM: potential use-after-free via kvm_ioctl_create_device() (CVE-2019-6974)

  • Kernel: KVM: nVMX: use-after-free of the hrtimer for emulation of the preemption timer (CVE-2019-7221)

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.

Bug Fix(es):

  • VM hangs on RHEL rt-kernel and OSP 13 [rhel-7.6.z] (BZ#1688673)

  • kernel-rt: update to the RHEL7.6.z batch#4 source tree (BZ#1689417)

Users of kernel are advised to upgrade to these updated packages, which fix these bugs.

OSVersionArchitecturePackageVersionFilename
RedHat7noarchkernel-rt-doc< 3.10.0-957.12.1.rt56.927.el7kernel-rt-doc-3.10.0-957.12.1.rt56.927.el7.noarch.rpm
RedHat7x86_64kernel-rt-debug-kvm< 3.10.0-957.12.1.rt56.927.el7kernel-rt-debug-kvm-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm
RedHat7x86_64kernel-rt-debug-debuginfo< 3.10.0-957.12.1.rt56.927.el7kernel-rt-debug-debuginfo-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm
RedHat7x86_64kernel-rt-trace-kvm-debuginfo< 3.10.0-957.12.1.rt56.927.el7kernel-rt-trace-kvm-debuginfo-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm
RedHat7x86_64kernel-rt-devel< 3.10.0-957.12.1.rt56.927.el7kernel-rt-devel-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm
RedHat7x86_64kernel-rt-kvm< 3.10.0-957.12.1.rt56.927.el7kernel-rt-kvm-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm
RedHat7x86_64kernel-rt-debug< 3.10.0-957.12.1.rt56.927.el7kernel-rt-debug-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm
RedHat7x86_64kernel-rt< 3.10.0-957.12.1.rt56.927.el7kernel-rt-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm
RedHat7x86_64kernel-rt-trace-kvm< 3.10.0-957.12.1.rt56.927.el7kernel-rt-trace-kvm-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm
RedHat7x86_64kernel-rt-trace-debuginfo< 3.10.0-957.12.1.rt56.927.el7kernel-rt-trace-debuginfo-3.10.0-957.12.1.rt56.927.el7.x86_64.rpm
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8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

0.036 Low

EPSS

Percentile

91.5%

JSON
Related for RHSA-2019:0833
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