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redhatRedHatRHSA-2023:7434
HistoryNov 21, 2023 - 3:07 p.m.

(RHSA-2023:7434) Important: kernel security and bug fix update

2023-11-2115:07:16
access.redhat.com
16
kernel packages
linux kernel
security fix
use-after-free vulnerability
traffic control index filter
reference counter leak
netfilter
bug fix
cross-compiled rpm
backports
rhel 8.8.

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

7.3 High

AI Score

Confidence

Low

4.3 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:S/C:P/I:P/A:P

0.001 Low

EPSS

Percentile

49.7%

JSON

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

  • kernel: Use-after-free vulnerability in the Linux Kernel traffic control index filter (CVE-2023-1829)

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

  • kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function (CVE-2023-3776)

  • kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove() (CVE-2023-4004)

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-devel RPM cross-compiled by CKI contains host-arch scripts (BZ#2232140)

  • netfilter: RHEL 8.8 phase 2 backports from upstream (BZ#2236819)

OSVersionArchitecturePackageVersionFilename
RedHat8ppc64lekernel-debug< 4.18.0-193.119.1.el8_2kernel-debug-4.18.0-193.119.1.el8_2.ppc64le.rpm
RedHat8ppc64lekernel-modules-extra< 4.18.0-193.119.1.el8_2kernel-modules-extra-4.18.0-193.119.1.el8_2.ppc64le.rpm
RedHat8x86_64kernel-debug-modules-extra< 4.18.0-193.119.1.el8_2kernel-debug-modules-extra-4.18.0-193.119.1.el8_2.x86_64.rpm
RedHat8x86_64kernel-cross-headers< 4.18.0-193.119.1.el8_2kernel-cross-headers-4.18.0-193.119.1.el8_2.x86_64.rpm
RedHat8ppc64lekernel-debug-modules-extra< 4.18.0-193.119.1.el8_2kernel-debug-modules-extra-4.18.0-193.119.1.el8_2.ppc64le.rpm
RedHat8noarchkernel-abi-whitelists< 4.18.0-193.119.1.el8_2kernel-abi-whitelists-4.18.0-193.119.1.el8_2.noarch.rpm
RedHat8x86_64kernel< 4.18.0-193.119.1.el8_2kernel-4.18.0-193.119.1.el8_2.x86_64.rpm
RedHat8ppc64lekernel-devel< 4.18.0-193.119.1.el8_2kernel-devel-4.18.0-193.119.1.el8_2.ppc64le.rpm
RedHat8x86_64kernel-debug-devel< 4.18.0-193.119.1.el8_2kernel-debug-devel-4.18.0-193.119.1.el8_2.x86_64.rpm
RedHat8ppc64lebpftool-debuginfo< 4.18.0-193.119.1.el8_2bpftool-debuginfo-4.18.0-193.119.1.el8_2.ppc64le.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

7.3 High

AI Score

Confidence

Low

4.3 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:S/C:P/I:P/A:P

0.001 Low

EPSS

Percentile

49.7%

JSON
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