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redhatRedHatRHSA-2021:2715
HistoryJul 20, 2021 - 1:34 p.m.

(RHSA-2021:2715) Important: kernel-rt security and bug fix update

2021-07-2013:34:09
access.redhat.com
72

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.2 High

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

0.002 Low

EPSS

Percentile

55.7%

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: size_t-to-int conversion vulnerability in the filesystem layer (CVE-2021-33909)

  • kernel: race condition for removal of the HCI controller (CVE-2021-32399)

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):

  • kernel-rt: update RT source tree to the RHEL-8.4.z2 source tree (BZ#1975405)
OSVersionArchitecturePackageVersionFilename
RedHat8x86_64kernel-rt-debug-debuginfo< 4.18.0-305.10.2.rt7.83.el8_4kernel-rt-debug-debuginfo-4.18.0-305.10.2.rt7.83.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt-kvm< 4.18.0-305.10.2.rt7.83.el8_4kernel-rt-kvm-4.18.0-305.10.2.rt7.83.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt-debug-modules-extra< 4.18.0-305.10.2.rt7.83.el8_4kernel-rt-debug-modules-extra-4.18.0-305.10.2.rt7.83.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt-debug-devel< 4.18.0-305.10.2.rt7.83.el8_4kernel-rt-debug-devel-4.18.0-305.10.2.rt7.83.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt-devel< 4.18.0-305.10.2.rt7.83.el8_4kernel-rt-devel-4.18.0-305.10.2.rt7.83.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt-modules-extra< 4.18.0-305.10.2.rt7.83.el8_4kernel-rt-modules-extra-4.18.0-305.10.2.rt7.83.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt-debug< 4.18.0-305.10.2.rt7.83.el8_4kernel-rt-debug-4.18.0-305.10.2.rt7.83.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt-debug-kvm< 4.18.0-305.10.2.rt7.83.el8_4kernel-rt-debug-kvm-4.18.0-305.10.2.rt7.83.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt-core< 4.18.0-305.10.2.rt7.83.el8_4kernel-rt-core-4.18.0-305.10.2.rt7.83.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt< 4.18.0-305.10.2.rt7.83.el8_4kernel-rt-4.18.0-305.10.2.rt7.83.el8_4.x86_64.rpm
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7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.2 High

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

0.002 Low

EPSS

Percentile

55.7%

JSON
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