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redhatRedHatRHSA-2022:0187
HistoryJan 19, 2022 - 1:58 p.m.

(RHSA-2022:0187) Important: kernel-rt security and bug fix update

2022-01-1913:58:11
access.redhat.com
33

0.001 Low

EPSS

Percentile

25.8%

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: local privilege escalation by exploiting the fsconfig syscall parameter leads to container breakout (CVE-2021-4154)

  • kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL (CVE-2021-4155)

  • kernel: fs_context: heap overflow in legacy parameter handling (CVE-2022-0185)

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):

  • kernnel-rt-debug: do not call blocking ops when !TASK_RUNNING; state=1 set at [<0000000050e86018>] handle_userfault+0x530/0x1820 (BZ#2029421)

  • kernel-rt: update RT source tree to the RHEL-8.4.z6 source tree (BZ#2029592)

OSVersionArchitecturePackageVersionFilename
RedHat8x86_64kernel-rt-modules-extra< 4.18.0-305.34.2.rt7.107.el8_4kernel-rt-modules-extra-4.18.0-305.34.2.rt7.107.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt-debug-modules< 4.18.0-305.34.2.rt7.107.el8_4kernel-rt-debug-modules-4.18.0-305.34.2.rt7.107.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt-kvm< 4.18.0-305.34.2.rt7.107.el8_4kernel-rt-kvm-4.18.0-305.34.2.rt7.107.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt-debuginfo< 4.18.0-305.34.2.rt7.107.el8_4kernel-rt-debuginfo-4.18.0-305.34.2.rt7.107.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt-debuginfo-common-x86_64< 4.18.0-305.34.2.rt7.107.el8_4kernel-rt-debuginfo-common-x86_64-4.18.0-305.34.2.rt7.107.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt< 4.18.0-305.34.2.rt7.107.el8_4kernel-rt-4.18.0-305.34.2.rt7.107.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt-debug-debuginfo< 4.18.0-305.34.2.rt7.107.el8_4kernel-rt-debug-debuginfo-4.18.0-305.34.2.rt7.107.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt-devel< 4.18.0-305.34.2.rt7.107.el8_4kernel-rt-devel-4.18.0-305.34.2.rt7.107.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt-modules< 4.18.0-305.34.2.rt7.107.el8_4kernel-rt-modules-4.18.0-305.34.2.rt7.107.el8_4.x86_64.rpm
RedHat8x86_64kernel-rt-debug-kvm< 4.18.0-305.34.2.rt7.107.el8_4kernel-rt-debug-kvm-4.18.0-305.34.2.rt7.107.el8_4.x86_64.rpm
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