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RedHatRHSA-2022:0620
HistoryFeb 22, 2022 - 2:25 p.m.

(RHSA-2022:0620) Important: kernel security and bug fix update

2022-02-2214:25:44
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294

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

7.9 High

CVSS2

Access Vector

ADJACENT_NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.001 Low

EPSS

Percentile

45.3%

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

Security Fix(es):

  • kernel: use after free in eventpoll.c may lead to escalation of privilege (CVE-2020-0466)

  • kernel: Use After Free in unix_gc() which could result in a local privilege escalation (CVE-2021-0920)

  • kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL (CVE-2021-4155)

  • kernel: possible privileges escalation due to missing TLB flush (CVE-2022-0330)

  • kernel: failing usercopy allows for use-after-free exploitation (CVE-2022-22942)

  • kernel: out of bounds write in hid-multitouch.c may lead to escalation of privilege (CVE-2020-0465)

  • kernel: double free in bluetooth subsystem when the HCI device initialization fails (CVE-2021-3564)

  • kernel: use-after-free in function hci_sock_bound_ioctl() (CVE-2021-3573)

  • kernel: possible use-after-free in bluetooth module (CVE-2021-3752)

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):

  • Kernel with enabled BERT does not decode CPU fatal events correctly (BZ#1950302)

  • RHEL 7.9 - Call trace seen during controller random reset on IB config (BZ#1984070)

  • Infinite loop in blk_set_queue_dying() from blk_queue_for_each_rl() when another CPU races and modifies the queue’s blkg_list (BZ#2029574)

  • NFS client kernel crash in NFS4 backchannel transmit path - ftrace_raw_event_rpc_task_queued called from rpc_run_bc_task (BZ#2039508)

  • SELinux is preventing / from mount access on the filesystem /proc (BZ#2040196)

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

7.9 High

CVSS2

Access Vector

ADJACENT_NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.001 Low

EPSS

Percentile

45.3%

Related for RHSA-2022:0620