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redhatRedHatRHSA-2022:1413
HistoryApr 19, 2022 - 1:47 p.m.

(RHSA-2022:1413) Important: kernel-rt security and bug fix update

2022-04-1913:47:38
access.redhat.com
51
kernel-rt
security
bug fix
real time linux kernel
determinism

CVSS2

6.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

7.8

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

EPSS

0.095

Percentile

94.8%

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: fget: check that the fd still exists after getting a ref to it (CVE-2021-4083)

  • kernel: cgroups v1 release_agent feature may allow privilege escalation (CVE-2022-0492)

  • kernel: heap out of bounds write in nf_dup_netdev.c (CVE-2022-25636)

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.z8 source tree (BZ#2059334)
OSVersionArchitecturePackageVersionFilename
RedHat8x86_64kernel-rt-kvm< 4.18.0-305.45.1.rt7.117.el8_4kernel-rt-kvm-4.18.0-305.45.1.rt7.117.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt-debug-modules< 4.18.0-305.45.1.rt7.117.el8_4kernel-rt-debug-modules-4.18.0-305.45.1.rt7.117.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt< 4.18.0-305.45.1.rt7.117.el8_4kernel-rt-4.18.0-305.45.1.rt7.117.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt-modules-extra< 4.18.0-305.45.1.rt7.117.el8_4kernel-rt-modules-extra-4.18.0-305.45.1.rt7.117.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt-devel< 4.18.0-305.45.1.rt7.117.el8_4kernel-rt-devel-4.18.0-305.45.1.rt7.117.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt-core< 4.18.0-305.45.1.rt7.117.el8_4kernel-rt-core-4.18.0-305.45.1.rt7.117.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt-debug< 4.18.0-305.45.1.rt7.117.el8_4kernel-rt-debug-4.18.0-305.45.1.rt7.117.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt-debug-devel< 4.18.0-305.45.1.rt7.117.el8_4kernel-rt-debug-devel-4.18.0-305.45.1.rt7.117.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt-debug-modules-extra< 4.18.0-305.45.1.rt7.117.el8_4kernel-rt-debug-modules-extra-4.18.0-305.45.1.rt7.117.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt-debuginfo< 4.18.0-305.45.1.rt7.117.el8_4kernel-rt-debuginfo-4.18.0-305.45.1.rt7.117.el8_4.x86_64.rpm
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CVSS2

6.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

7.8

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

EPSS

0.095

Percentile

94.8%

JSON
Related for RHSA-2022:1413
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