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redhatRedHatRHSA-2021:2666
HistoryJul 07, 2021 - 2:33 p.m.

(RHSA-2021:2666) Important: kernel security and bug fix update

2021-07-0714:33:16
access.redhat.com
48

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

6.9 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.001 Low

EPSS

Percentile

31.1%

JSON

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

Security Fix(es):

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

  • kernel: security bypass in certs/blacklist.c and certs/system_keyring.c (CVE-2020-26541)

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):

  • [Azure][RHEL8.4] Two Patches Needed To Enable Azure Host Time-syncing in VMs (BZ#1963052)
OSVersionArchitecturePackageVersionFilename
RedHat8s390xkernel-core< 4.18.0-147.51.1.el8_1kernel-core-4.18.0-147.51.1.el8_1.s390x.rpm
RedHat8ppc64leperf< 4.18.0-147.51.1.el8_1perf-4.18.0-147.51.1.el8_1.ppc64le.rpm
RedHat8aarch64kernel< 4.18.0-147.51.1.el8_1kernel-4.18.0-147.51.1.el8_1.aarch64.rpm
RedHat8x86_64kernel-tools-libs-devel< 4.18.0-147.51.1.el8_1kernel-tools-libs-devel-4.18.0-147.51.1.el8_1.x86_64.rpm
RedHat8x86_64bpftool-debuginfo< 4.18.0-147.51.1.el8_1bpftool-debuginfo-4.18.0-147.51.1.el8_1.x86_64.rpm
RedHat8x86_64kernel-tools-libs< 4.18.0-147.51.1.el8_1kernel-tools-libs-4.18.0-147.51.1.el8_1.x86_64.rpm
RedHat8s390xkernel-zfcpdump< 4.18.0-147.51.1.el8_1kernel-zfcpdump-4.18.0-147.51.1.el8_1.s390x.rpm
RedHat8aarch64kernel-debuginfo-common-aarch64< 4.18.0-147.51.1.el8_1kernel-debuginfo-common-aarch64-4.18.0-147.51.1.el8_1.aarch64.rpm
RedHat8ppc64lekernel-core< 4.18.0-147.51.1.el8_1kernel-core-4.18.0-147.51.1.el8_1.ppc64le.rpm
RedHat8x86_64kernel-debuginfo< 4.18.0-147.51.1.el8_1kernel-debuginfo-4.18.0-147.51.1.el8_1.x86_64.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

6.9 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.001 Low

EPSS

Percentile

31.1%

JSON
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