Important: kernel-rt security and bug fix update

2023-06-1319:54:33

Google

osv.dev

kernel-rt

real time linux kernel

netfilter

nf_tables

privilege escalation

cve-2023-32233

smpboot

scheduler frequency

crash

bz#2188316

bz#2188722

bz#2196667

rocky linux-8.8.z0

update

source tree

CVSS3

7.8

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

AI Score

7.5

Confidence

High

EPSS

Percentile

5.1%

JSON

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: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation (CVE-2023-32233)

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):

smpboot: Scheduler frequency invariance went wobbly, disabling! (BZ#2188316)
Crash: kernel BUG at kernel/locking/rtmutex.c:1338! (BZ#2188722)
kernel-rt: update RT source tree to the Rocky Linux-8.8.z0 source tree. (BZ#2196667)