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RedHatRHSA-2021:1272
HistoryApr 20, 2021 - 11:52 a.m.

(RHSA-2021:1272) Important: kernel security, bug fix, and enhancement update

2021-04-2011:52:59
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34

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

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

0.001 Low

EPSS

Percentile

37.4%

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

Security Fix(es):

  • kernel: Use after free via PI futex state (CVE-2021-3347)

  • kernel: out-of-bounds read in libiscsi module (CVE-2021-27364)

  • kernel: heap buffer overflow in the iSCSI subsystem (CVE-2021-27365)

  • kernel: iscsi: unrestricted access to sessions and handles (CVE-2021-27363)

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):

  • System Crash / Core dump while deleting VMs (BZ#1897687)

  • various patches to stabilize the OPAL error log processing and the powernv dump processing (ESS) (BZ#1907302)

  • Unable to receive the signal registered using mq_notify(). (BZ#1926111)

  • SCTP “Address already in use” when no active endpoints from RHEL 8.2 onwards (BZ#1927522)

  • enable CONFIG_RANDOM_TRUST_CPU (BZ#1928027)

  • [mm] mm, oom: remove oom_lock from oom_reaper (BZ#1929739)

  • Configuring the system with non-RT kernel will hang the system (BZ#1930737)

  • fNIC driver needs a patch fix that addresses crash (BZ#1932460)

  • OVS mistakenly using local IP as tun_dst for VXLAN packets (?) (BZ#1944670)

Enhancement(s):

  • mlx5: Hairpin Support in Switch Mode (BZ#1924690)

  • Trace mode enablement in IMC to facilitate perf-kvm support (perf:) (BZ#1929696)

  • ice: Enable Flow Director Support (BZ#1930780)

Use Vulners API to create your own security tool

API usage cases
  • Network scanning
  • Linux Patch management
  • Threat protection
  • No network audit solution

Ways of integration

Integrate Vulners API

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

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

0.001 Low

EPSS

Percentile

37.4%

Related for RHSA-2021:1272