RHEL 8 : kernel-rt (RHSA-2023:2736)

high Nessus Plugin ID 175866

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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 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:2736 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):

* use-after-free caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c (CVE-2022-3564)

* net/ulp: use-after-free in listening ULP sockets (CVE-2023-0461)

* hw: cpu: AMD CPUs may transiently execute beyond unconditional direct branch (CVE-2021-26341)

* malicious data for FBIOPUT_VSCREENINFO ioctl may cause OOB write memory (CVE-2021-33655)

* when setting font with malicious data by ioctl PIO_FONT, kernel will write memory out of bounds (CVE-2021-33656)

* possible race condition in drivers/tty/tty_buffers.c (CVE-2022-1462)

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

* KVM: NULL pointer dereference in kvm_mmu_invpcid_gva (CVE-2022-1789)

* KVM: nVMX: missing IBPB when exiting from nested guest can lead to Spectre v2 attacks (CVE-2022-2196)

* netfilter: nf_conntrack_irc message handling issue (CVE-2022-2663)

* race condition in xfrm_probe_algs can lead to OOB read/write (CVE-2022-3028)

* media: em28xx: initialize refcount before kref_get (CVE-2022-3239)

* race condition in hugetlb_no_page() in mm/hugetlb.c (CVE-2022-3522)

* memory leak in ipv6_renew_options() (CVE-2022-3524)

* data races around icsk->icsk_af_ops in do_ipv6_setsockopt (CVE-2022-3566)

* data races around sk->sk_prot (CVE-2022-3567)

* memory leak in l2cap_recv_acldata of the file net/bluetooth/l2cap_core.c (CVE-2022-3619)

* denial of service in follow_page_pte in mm/gup.c due to poisoned pte entry (CVE-2022-3623)

* use-after-free after failed devlink reload in devlink_param_get (CVE-2022-3625)

* USB-accessible buffer overflow in brcmfmac (CVE-2022-3628)

* Double-free in split_2MB_gtt_entry when function intel_gvt_dma_map_guest_page failed (CVE-2022-3707)

* l2tp: missing lock when clearing sk_user_data can lead to NULL pointer dereference (CVE-2022-4129)

* igmp: use-after-free in ip_check_mc_rcu when opening and closing inet sockets (CVE-2022-20141)

* Executable Space Protection Bypass (CVE-2022-25265)

* Unprivileged users may use PTRACE_SEIZE to set PTRACE_O_SUSPEND_SECCOMP option (CVE-2022-30594)

* unmap_mapping_range() race with munmap() on VM_PFNMAP mappings leads to stale TLB entry (CVE-2022-39188)

* TLB flush operations are mishandled in certain KVM_VCPU_PREEMPTED leading to guest malfunctioning (CVE-2022-39189)

* Report vmalloc UAF in dvb-core/dmxdev (CVE-2022-41218)

* u8 overflow problem in cfg80211_update_notlisted_nontrans() (CVE-2022-41674)

* use-after-free related to leaf anon_vma double reuse (CVE-2022-42703)

* use-after-free in bss_ref_get in net/wireless/scan.c (CVE-2022-42720)

* BSS list corruption in cfg80211_add_nontrans_list in net/wireless/scan.c (CVE-2022-42721)

* Denial of service in beacon protection for P2P-device (CVE-2022-42722)

* memory corruption in usbmon driver (CVE-2022-43750)

* NULL pointer dereference in traffic control subsystem (CVE-2022-47929)

* NULL pointer dereference in rawv6_push_pending_frames (CVE-2023-0394)

* use-after-free caused by invalid pointer hostname in fs/cifs/connect.c (CVE-2023-1195)

* Soft lockup occurred during __page_mapcount (CVE-2023-1582)

* slab-out-of-bounds read vulnerabilities in cbq_classify (CVE-2023-23454)

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 8.8 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-2023:2736.

Plugin Details

Severity: High

ID: 175866

File Name: redhat-RHSA-2023-2736.nasl

Version: 1.3

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 5/16/2023

Updated: 9/10/2025

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: 7.3

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

CVSS Score Source: CVE-2022-1679

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.9

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

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

CVSS Score Source: CVE-2022-2196

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, 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-debug-modules-extra, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-kvm, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-modules, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-core, 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: 5/16/2023

Vulnerability Publication Date: 9/30/2021

Reference Information

CVE: CVE-2021-26341, CVE-2021-33655, CVE-2021-33656, CVE-2021-47592, CVE-2022-1462, CVE-2022-1679, CVE-2022-1789, CVE-2022-20141, CVE-2022-2196, CVE-2022-25265, CVE-2022-2663, CVE-2022-3028, CVE-2022-30594, CVE-2022-3239, CVE-2022-3524, CVE-2022-3564, CVE-2022-3566, CVE-2022-3567, CVE-2022-3619, CVE-2022-3623, CVE-2022-3625, CVE-2022-3628, CVE-2022-36879, CVE-2022-3707, CVE-2022-39188, CVE-2022-39189, CVE-2022-41218, CVE-2022-4129, CVE-2022-41674, CVE-2022-42703, CVE-2022-42720, CVE-2022-42721, CVE-2022-42722, CVE-2022-43750, CVE-2022-4662, CVE-2022-47929, CVE-2022-48695, CVE-2023-0394, CVE-2023-0461, CVE-2023-1095, CVE-2023-1195, CVE-2023-1582, CVE-2023-2177, CVE-2023-22998, CVE-2023-23454

CWE: 1188, 120, 123, 125, 20, 276, 281, 362, 366, 401, 415, 416, 421, 436, 455, 476, 552, 667, 705, 787, 911, 923

RHSA: 2023:2736

Detections

Analytics

RHEL 8 : kernel-rt (RHSA-2023:2736)

high Nessus Plugin ID 175866

Synopsis

Description

Solution

See Also

Plugin Details

Risk Information

VPR

Vendor

CVSS v2

CVSS v3

Vulnerability Information

Reference Information