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redhatRedHatRHSA-2021:0760
HistoryMar 09, 2021 - 8:47 a.m.

(RHSA-2021:0760) Moderate: kernel security and bug fix update

2021-03-0908:47:49
access.redhat.com
94
rhsa-2021:0760
kernel
security
bug fix
linux
cve-2020-24394
cve-2020-25212
nfs client
selinux.

CVSS2

4.4

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

7.1

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

EPSS

0.001

Percentile

18.9%

JSON

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

Security Fix(es):

  • kernel: umask not applied on filesystem without ACL support (CVE-2020-24394)

  • kernel: TOCTOU mismatch in the NFS client code (CVE-2020-25212)

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):

  • Security patch for CVE-2020-25212 breaks directory listings via ‘ls’ on NFS V4.2 shares mounted with selinux enabled labels (BZ#1919141)
OSVersionArchitecturePackageVersionFilename
RedHat7x86_64kernel-tools-libs-devel< 3.10.0-693.82.1.el7kernel-tools-libs-devel-3.10.0-693.82.1.el7.x86_64.rpm
RedHat7noarchkernel-doc< 3.10.0-693.82.1.el7kernel-doc-3.10.0-693.82.1.el7.noarch.rpm
RedHat7x86_64kernel-debuginfo-common-x86_64< 3.10.0-693.82.1.el7kernel-debuginfo-common-x86_64-3.10.0-693.82.1.el7.x86_64.rpm
RedHat7x86_64kernel-tools< 3.10.0-693.82.1.el7kernel-tools-3.10.0-693.82.1.el7.x86_64.rpm
RedHat7x86_64perf< 3.10.0-693.82.1.el7perf-3.10.0-693.82.1.el7.x86_64.rpm
RedHat7ppc64lekernel-tools< 3.10.0-693.82.1.el7kernel-tools-3.10.0-693.82.1.el7.ppc64le.rpm
RedHat7x86_64python-perf-debuginfo< 3.10.0-693.82.1.el7python-perf-debuginfo-3.10.0-693.82.1.el7.x86_64.rpm
RedHat7ppc64lekernel-debug< 3.10.0-693.82.1.el7kernel-debug-3.10.0-693.82.1.el7.ppc64le.rpm
RedHat7ppc64lepython-perf-debuginfo< 3.10.0-693.82.1.el7python-perf-debuginfo-3.10.0-693.82.1.el7.ppc64le.rpm
RedHat7ppc64lekernel< 3.10.0-693.82.1.el7kernel-3.10.0-693.82.1.el7.ppc64le.rpm
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CVSS2

4.4

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

7.1

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

EPSS

0.001

Percentile

18.9%

JSON
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