RHEL 9 : kernel-rt (RHSA-2022:7933)

high Nessus Plugin ID 167544

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Synopsis

The remote Red Hat host is missing one or more security updates for kernel-rt.

Description

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:7933 advisory.

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

Security Fix(es):

* off-path attacker may inject data or terminate victim's TCP session (CVE-2020-36516)

* use-after-free vulnerability in function sco_sock_sendmsg() (CVE-2021-3640)

* smb2_ioctl_query_info NULL pointer dereference (CVE-2022-0168)

* NULL pointer dereference in udf_expand_file_adinicbdue() during writeback (CVE-2022-0617)

* swiotlb information leak with DMA_FROM_DEVICE (CVE-2022-0854)

* uninitialized registers on stack in nft_do_chain can cause kernel pointer leakage to UM (CVE-2022-1016)

* race condition in snd_pcm_hw_free leading to use-after-free (CVE-2022-1048)

* use-after-free and memory errors in ext4 when mounting and operating on a corrupted image (CVE-2022-1184)

* concurrency use-after-free between drm_setmaster_ioctl and drm_mode_getresources (CVE-2022-1280)

* kernel info leak issue in pfkey_register (CVE-2022-1353)

* use-after-free in ath9k_htc_probe_device() could cause an escalation of privileges (CVE-2022-1679)

* NULL pointer dereference in x86_emulate_insn may lead to DoS (CVE-2022-1852)

* fanotify misuses fd_install() which could lead to use-after-free (CVE-2022-1998)

* nf_tables cross-table potential use-after-free may lead to local privilege escalation (CVE-2022-2586)

* openvswitch: integer underflow leads to out-of-bounds write in reserve_sfa_size() (CVE-2022-2639)

* slab-out-of-bounds access in packet_recvmsg() (CVE-2022-20368)

* incomplete clean-up of multi-core shared buffers (aka SBDR) (CVE-2022-21123)

* incomplete clean-up of microarchitectural fill buffers (aka SBDS) (CVE-2022-21125)

* incomplete clean-up in specific special register write operations (aka DRPW) (CVE-2022-21166)

* possible to use the debugger to write zero into a location of choice (CVE-2022-21499)

* AMD: RetBleed Arbitrary Speculative Code Execution with Return Instructions (CVE-2022-23816, CVE-2022-29900)

* AMD: Branch Type Confusion (non-retbleed) (CVE-2022-23825)

* Intel: Post-barrier Return Stack Buffer Predictions (CVE-2022-26373)

* double free in ems_usb_start_xmit in drivers/net/can/usb/ems_usb.c (CVE-2022-28390)

* use after free in SUNRPC subsystem (CVE-2022-28893)

* use-after-free due to improper update of reference count in net/sched/cls_u32.c (CVE-2022-29581)

* Intel: RetBleed Arbitrary Speculative Code Execution with Return Instructions (CVE-2022-29901)

* DoS in nfqnl_mangle in net/netfilter/nfnetlink_queue.c (CVE-2022-36946)

* nf_tables disallow binding to already bound chain (CVE-2022-39190)

* nfs_atomic_open() returns uninitialized data instead of ENOTDIR (CVE-2022-24448)

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.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 9.1 Release Notes linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL kernel-rt package based on the guidance in RHSA-2022:7933.

Plugin Details

Severity: High

ID: 167544

File Name: redhat-RHSA-2022-7933.nasl

Version: 1.11

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 11/15/2022

Updated: 9/12/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: High

Score: 8.9

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2022-29581

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C

CVSS Score Source: CVE-2023-2008

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug, p-cpe:/a:redhat:enterprise_linux:kernel-rt-modules, p-cpe:/a:redhat:enterprise_linux:kernel-rt-core, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-modules-extra, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-kvm, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-modules-extra, p-cpe:/a:redhat:enterprise_linux:kernel-rt, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-modules, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-core, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:kernel-rt-kvm, p-cpe:/a:redhat:enterprise_linux:kernel-rt-devel

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/15/2022

Vulnerability Publication Date: 12/8/2021

CISA Known Exploited Vulnerability Due Dates: 7/17/2024

Reference Information

CVE: CVE-2020-36516, CVE-2021-3640, CVE-2021-47099, CVE-2021-47556, CVE-2021-47580, CVE-2022-0168, CVE-2022-0617, CVE-2022-0854, CVE-2022-1016, CVE-2022-1048, CVE-2022-1158, CVE-2022-1184, CVE-2022-1263, CVE-2022-1280, CVE-2022-1353, CVE-2022-1679, CVE-2022-1852, CVE-2022-1998, CVE-2022-20368, CVE-2022-20572, CVE-2022-21123, CVE-2022-21125, CVE-2022-21166, CVE-2022-21499, CVE-2022-2153, CVE-2022-23825, CVE-2022-24448, CVE-2022-2503, CVE-2022-2586, CVE-2022-26373, CVE-2022-2639, CVE-2022-28390, CVE-2022-28693, CVE-2022-28893, CVE-2022-29581, CVE-2022-29900, CVE-2022-29901, CVE-2022-3107, CVE-2022-3108, CVE-2022-3239, CVE-2022-36946, CVE-2022-39190, CVE-2022-42432, CVE-2022-48905, CVE-2022-48918, CVE-2023-1095, CVE-2023-2008

CWE: 125, 129, 20, 200, 212, 288, 290, 392, 401, 415, 416, 457, 459, 476, 681, 787, 863, 908, 909

RHSA: 2022:7933

Detections

Analytics

RHEL 9 : kernel-rt (RHSA-2022:7933)

high Nessus Plugin ID 167544

Synopsis

Description

Solution

See Also

Plugin Details

Risk Information

VPR

Vendor

CVSS v2

CVSS v3

Vulnerability Information

Reference Information