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redhatRedHatRHSA-2023:5621
HistoryOct 10, 2023 - 2:35 p.m.

(RHSA-2023:5621) Important: kernel-rt security and bug fix update

2023-10-1014:35:48
access.redhat.com
18
kernel-rt packages real time linux kernel netfilter nf_tables security fix privilege escalation bug fix cve-2023-3609 cve-2023-32233 cve-2023-35001 bz#2232239 unix high determinism requirements.

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

0.001

Percentile

17.1%

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: net/sched: cls_u32 component reference counter leak if tcf_change_indev() fails (CVE-2023-3609)

  • kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation (CVE-2023-32233)

  • kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval() (CVE-2023-35001)

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 to the latest RHEL7.9.z26 source tree (BZ#2232239)
OSVersionArchitecturePackageVersionFilename
RedHat7x86_64kernel-rt-debug-kvm-debuginfo< 3.10.0-1160.102.1.rt56.1250.el7kernel-rt-debug-kvm-debuginfo-3.10.0-1160.102.1.rt56.1250.el7.x86_64.rpm
RedHat7x86_64kernel-rt-trace-devel< 3.10.0-1160.102.1.rt56.1250.el7kernel-rt-trace-devel-3.10.0-1160.102.1.rt56.1250.el7.x86_64.rpm
RedHat7x86_64kernel-rt-trace< 3.10.0-1160.102.1.rt56.1250.el7kernel-rt-trace-3.10.0-1160.102.1.rt56.1250.el7.x86_64.rpm
RedHat7x86_64kernel-rt-kvm-debuginfo< 3.10.0-1160.102.1.rt56.1250.el7kernel-rt-kvm-debuginfo-3.10.0-1160.102.1.rt56.1250.el7.x86_64.rpm
RedHat7x86_64kernel-rt< 3.10.0-1160.102.1.rt56.1250.el7kernel-rt-3.10.0-1160.102.1.rt56.1250.el7.x86_64.rpm
RedHat7noarchkernel-rt-doc< 3.10.0-1160.102.1.rt56.1250.el7kernel-rt-doc-3.10.0-1160.102.1.rt56.1250.el7.noarch.rpm
RedHat7x86_64kernel-rt-trace-debuginfo< 3.10.0-1160.102.1.rt56.1250.el7kernel-rt-trace-debuginfo-3.10.0-1160.102.1.rt56.1250.el7.x86_64.rpm
RedHat7x86_64kernel-rt-debug-kvm< 3.10.0-1160.102.1.rt56.1250.el7kernel-rt-debug-kvm-3.10.0-1160.102.1.rt56.1250.el7.x86_64.rpm
RedHat7x86_64kernel-rt-trace-kvm-debuginfo< 3.10.0-1160.102.1.rt56.1250.el7kernel-rt-trace-kvm-debuginfo-3.10.0-1160.102.1.rt56.1250.el7.x86_64.rpm
RedHat7x86_64kernel-rt-debug< 3.10.0-1160.102.1.rt56.1250.el7kernel-rt-debug-3.10.0-1160.102.1.rt56.1250.el7.x86_64.rpm
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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

0.001

Percentile

17.1%

JSON
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