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redhatRedHatRHSA-2022:5939
HistoryAug 09, 2022 - 9:27 a.m.

(RHSA-2022:5939) Moderate: kernel-rt security and bug fix update

2022-08-0909:27:49
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121

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

2.1 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

0.001 Low

EPSS

Percentile

32.7%

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

Security Fix(es):

  • Incomplete cleanup of multi-core shared buffers (aka SBDR) (CVE-2022-21123)

  • Incomplete cleanup of microarchitectural fill buffers (aka SBDS) (CVE-2022-21125)

  • Incomplete cleanup in specific special register write operations (aka DRPW) (CVE-2022-21166)

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):

  • The kernel-rt crashes where one task is indefinitely looping in __start_cfs_bandwidth() with the cfs_b->lock spinlock being held (BZ#2079976)

  • update to the latest RHEL7.9.z16 source tree (BZ#2100182)

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

2.1 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

0.001 Low

EPSS

Percentile

32.7%