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RedHatRHSA-2020:5026
HistoryNov 10, 2020 - 9:41 a.m.

(RHSA-2020:5026) Moderate: kernel-rt security and bug fix update

2020-11-1009:41:25
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123

6.6 Medium

CVSS3

Attack Vector

PHYSICAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.2 High

CVSS2

Access Vector

LOCAL

Access 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

0.0005 Low

EPSS

Percentile

14.0%

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

  • kernel: kernel: buffer over write in vgacon_scroll (CVE-2020-14331)

  • kernel: net-sysfs: *_queue_add_kobject refcount issue (CVE-2019-20811)

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):

  • [RHEL-7.9] net/ipv6/ip6_flowlabel.c:85 suspicious rcu_dereference_check() usage! (kernel-rt-debug) (BZ#1836846)

  • md/raid: sleeping function called from invalid context triggered by CKI storage/swraid/trim test (BZ#1857872)

  • Infinite looping when trying to acquire eventpoll->mtx during eventpoll_release_file, 2nd try (BZ#1877695)

  • kernel-rt: update to the latest RHEL7.9.z1 source tree (BZ#1883995)

How to protect your server from attacks?

6.6 Medium

CVSS3

Attack Vector

PHYSICAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.2 High

CVSS2

Access Vector

LOCAL

Access 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

0.0005 Low

EPSS

Percentile

14.0%

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