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redhatRedHatRHSA-2021:2720
HistoryJul 20, 2021 - 8:09 p.m.

(RHSA-2021:2720) Important: kpatch-patch security update

2021-07-2020:09:28
access.redhat.com
48
kpatch-patch security update
size_t-to-int
use-after-free
filesystem layer
net/bluetooth/hci_event.c
cve-2021-33909
cve-2021-33034
kernel live patch
rpm post-install script

CVSS2

7.2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/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

0.002

Percentile

57.6%

JSON

This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel.

Security Fix(es):

  • kernel: size_t-to-int conversion vulnerability in the filesystem layer (CVE-2021-33909)

  • kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan (CVE-2021-33034)

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.

OSVersionArchitecturePackageVersionFilename
RedHat8x86_64kpatch-patch-4_18_0-193_29_1-debugsource< 1-8.el8_2kpatch-patch-4_18_0-193_29_1-debugsource-1-8.el8_2.x86_64.rpm
RedHat8x86_64kpatch-patch-4_18_0-193_56_1< 1-1.el8_2kpatch-patch-4_18_0-193_56_1-1-1.el8_2.x86_64.rpm
RedHat8x86_64kpatch-patch-4_18_0-193_19_1< 1-10.el8_2kpatch-patch-4_18_0-193_19_1-1-10.el8_2.x86_64.rpm
RedHat8ppc64lekpatch-patch-4_18_0-193_37_1< 1-8.el8_2kpatch-patch-4_18_0-193_37_1-1-8.el8_2.ppc64le.rpm
RedHat8x86_64kpatch-patch-4_18_0-193_47_1< 1-5.el8_2kpatch-patch-4_18_0-193_47_1-1-5.el8_2.x86_64.rpm
RedHat8ppc64lekpatch-patch-4_18_0-193_47_1< 1-5.el8_2kpatch-patch-4_18_0-193_47_1-1-5.el8_2.ppc64le.rpm
RedHat8ppc64lekpatch-patch-4_18_0-193_37_1-debugsource< 1-8.el8_2kpatch-patch-4_18_0-193_37_1-debugsource-1-8.el8_2.ppc64le.rpm
RedHat8x86_64kpatch-patch-4_18_0-193_37_1-debuginfo< 1-8.el8_2kpatch-patch-4_18_0-193_37_1-debuginfo-1-8.el8_2.x86_64.rpm
RedHat8ppc64lekpatch-patch-4_18_0-193_13_2-debuginfo< 1-10.el8_2kpatch-patch-4_18_0-193_13_2-debuginfo-1-10.el8_2.ppc64le.rpm
RedHat8x86_64kpatch-patch-4_18_0-193_13_2< 1-10.el8_2kpatch-patch-4_18_0-193_13_2-1-10.el8_2.x86_64.rpm
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1-10 of 721

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CVSS2

7.2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

7.8

Attack Vector

LOCAL

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LOW

Privileges Required

LOW

User Interaction

NONE

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UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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EPSS

0.002

Percentile

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JSON
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