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redhatRedHatRHSA-2023:1560
HistoryApr 04, 2023 - 6:33 a.m.

(RHSA-2023:1560) Important: kernel-rt security and bug fix update

2023-04-0406:33:19
access.redhat.com
15
kernel-rt
security
bug fix
real time linux kernel
use-after-free
alsa
cve-2022-3564
cve-2023-0266
rhel-8.2.z

7.9 High

CVSS3

Attack Vector

ADJACENT

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.001 Low

EPSS

Percentile

41.1%

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: use-after-free caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c (CVE-2022-3564)

  • ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF (CVE-2023-0266)

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 latest RHEL-8.2.z (BZ#2174904)
OSVersionArchitecturePackageVersionFilename
RedHat8x86_64kernel-rt-debug-modules-extra< 4.18.0-193.105.1.rt13.156.el8_2kernel-rt-debug-modules-extra-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm
RedHat8x86_64kernel-rt-debug-devel< 4.18.0-193.105.1.rt13.156.el8_2kernel-rt-debug-devel-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm
RedHat8x86_64kernel-rt-debuginfo< 4.18.0-193.105.1.rt13.156.el8_2kernel-rt-debuginfo-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm
RedHat8x86_64kernel-rt-debug-kvm< 4.18.0-193.105.1.rt13.156.el8_2kernel-rt-debug-kvm-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm
RedHat8x86_64kernel-rt-debuginfo-common-x86_64< 4.18.0-193.105.1.rt13.156.el8_2kernel-rt-debuginfo-common-x86_64-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm
RedHat8x86_64kernel-rt-kvm< 4.18.0-193.105.1.rt13.156.el8_2kernel-rt-kvm-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm
RedHat8x86_64kernel-rt< 4.18.0-193.105.1.rt13.156.el8_2kernel-rt-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm
RedHat8x86_64kernel-rt-debug< 4.18.0-193.105.1.rt13.156.el8_2kernel-rt-debug-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm
RedHat8x86_64kernel-rt-modules-extra< 4.18.0-193.105.1.rt13.156.el8_2kernel-rt-modules-extra-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm
RedHat8x86_64kernel-rt-core< 4.18.0-193.105.1.rt13.156.el8_2kernel-rt-core-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm
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7.9 High

CVSS3

Attack Vector

ADJACENT

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.001 Low

EPSS

Percentile

41.1%

JSON
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