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redhatRedHatRHSA-2021:3725
HistoryOct 05, 2021 - 7:22 a.m.

(RHSA-2021:3725) Important: kernel security and bug fix update

2021-10-0507:22:39
access.redhat.com
29
kernel packages
linux operating system
security fix
bug fix
cve-2021-22543
cve-2021-22555
cve-2021-32399
cve-2021-37576
cki kernel builds
x86 binaries
systemtap
bz#1975161

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

8.3

Attack Vector

ADJACENT

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

CVSS4

8.7

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/SC:H/VI:H/SI:H/VA:L/SA:L

EPSS

0.002

Percentile

59.5%

JSON

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

Security Fix(es):

  • kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks (CVE-2021-22543)

  • kernel: out-of-bounds write in xt_compat_target_from_user() in net/netfilter/x_tables.c (CVE-2021-22555)

  • kernel: race condition for removal of the HCI controller (CVE-2021-32399)

  • kernel: powerpc: KVM guest OS users can cause host OS memory corruption (CVE-2021-37576)

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):

  • [CKI kernel builds]: x86 binaries in non-x86 kernel rpms breaks systemtap [7.9.z] (BZ#1975161)
OSVersionArchitecturePackageVersionFilename
RedHat7x86_64python-perf-debuginfo< 3.10.0-693.94.1.el7python-perf-debuginfo-3.10.0-693.94.1.el7.x86_64.rpm
RedHat7x86_64kernel-debug-debuginfo< 3.10.0-693.94.1.el7kernel-debug-debuginfo-3.10.0-693.94.1.el7.x86_64.rpm
RedHat7x86_64kernel-devel< 3.10.0-693.94.1.el7kernel-devel-3.10.0-693.94.1.el7.x86_64.rpm
RedHat7x86_64kernel-debuginfo-common-x86_64< 3.10.0-693.94.1.el7kernel-debuginfo-common-x86_64-3.10.0-693.94.1.el7.x86_64.rpm
RedHat7x86_64kernel-debuginfo< 3.10.0-693.94.1.el7kernel-debuginfo-3.10.0-693.94.1.el7.x86_64.rpm
RedHat7x86_64kernel-tools< 3.10.0-693.94.1.el7kernel-tools-3.10.0-693.94.1.el7.x86_64.rpm
RedHat7x86_64perf-debuginfo< 3.10.0-693.94.1.el7perf-debuginfo-3.10.0-693.94.1.el7.x86_64.rpm
RedHat7x86_64kernel-tools-libs-devel< 3.10.0-693.94.1.el7kernel-tools-libs-devel-3.10.0-693.94.1.el7.x86_64.rpm
RedHat7noarchkernel-abi-whitelists< 3.10.0-693.94.1.el7kernel-abi-whitelists-3.10.0-693.94.1.el7.noarch.rpm
RedHat7x86_64kernel-tools-debuginfo< 3.10.0-693.94.1.el7kernel-tools-debuginfo-3.10.0-693.94.1.el7.x86_64.rpm
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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

8.3

Attack Vector

ADJACENT

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

CVSS4

8.7

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/SC:H/VI:H/SI:H/VA:L/SA:L

EPSS

0.002

Percentile

59.5%

JSON
Related for RHSA-2021:3725
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