Amazon Linux 2 : kernel (ALASKERNEL-5.15-2023-019)

high Nessus Plugin ID 176754

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Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

The version of kernel installed on the remote host is prior to 5.15.104-63.140. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.15-2023-019 advisory.

In the Linux kernel, the following vulnerability has been resolved:

ext4: block range must be validated before use in ext4_mb_clear_bb() (CVE-2022-50021)

A use-after-free vulnerability in the Linux Kernel Performance Events system can be exploited to achieve local privilege escalation.

The perf_group_detach function did not check the event's siblings' attach_state before calling add_event_to_groups(), but remove_on_exec made it possible to call list_del_event() on before detaching from their group, making it possible to use a dangling pointer causing a use-after-free vulnerability.

We recommend upgrading past commit fd0815f632c24878e325821943edccc7fde947a2. (CVE-2023-2235)

An issue was discovered in arch/x86/kvm/vmx/nested.c in the Linux kernel before 6.2.8. nVMX on x86_64 lacks consistency checks for CR0 and CR4. (CVE-2023-30456)

In the Linux kernel, the following vulnerability has been resolved:

ftrace: Fix invalid address access in lookup_rec() when index is 0 (CVE-2023-53075)

In the Linux kernel, the following vulnerability has been resolved:

drm/shmem-helper: Remove another errant put in error path (CVE-2023-53084)

In the Linux kernel, the following vulnerability has been resolved:

drm/i915/active: Fix misuse of non-idle barriers as fence trackers (CVE-2023-53087)

In the Linux kernel, the following vulnerability has been resolved:

ext4: fix task hung in ext4_xattr_delete_inode (CVE-2023-53089)

In the Linux kernel, the following vulnerability has been resolved:

ext4: update s_journal_inum if it changes after journal replay (CVE-2023-53091)

In the Linux kernel, the following vulnerability has been resolved:

interconnect: fix mem leak when freeing nodes (CVE-2023-53096)

In the Linux kernel, the following vulnerability has been resolved:

ext4: fix WARNING in ext4_update_inline_data (CVE-2023-53100)

In the Linux kernel, the following vulnerability has been resolved:

ext4: zero i_disksize when initializing the bootloader inode (CVE-2023-53101)

In the Linux kernel, the following vulnerability has been resolved:

bonding: restore bond's IFF_SLAVE flag if a non-eth dev enslave fails (CVE-2023-53103)

In the Linux kernel, the following vulnerability has been resolved:

net: tunnels: annotate lockless accesses to dev->needed_headroom (CVE-2023-53109)

In the Linux kernel, the following vulnerability has been resolved:

loop: Fix use-after-free issues (CVE-2023-53111)

In the Linux kernel, the following vulnerability has been resolved:

fs: prevent out-of-bounds array speculation when closing a file descriptor (CVE-2023-53117)

In the Linux kernel, the following vulnerability has been resolved:

tcp: tcp_make_synack() can be called from process context (CVE-2023-53121)

In the Linux kernel, the following vulnerability has been resolved:

PCI: s390: Fix use-after-free of PCI resources with per-function hotplug (CVE-2023-53123)

In the Linux kernel, the following vulnerability has been resolved:

SUNRPC: Fix a server shutdown leak (CVE-2023-53131)

In the Linux kernel, the following vulnerability has been resolved:

bpf, sockmap: Fix an infinite loop error when len is 0 in tcp_bpf_recvmsg_parser() (CVE-2023-53133)

In the Linux kernel, the following vulnerability has been resolved:

af_unix: fix struct pid leaks in OOB support (CVE-2023-53136)

In the Linux kernel, the following vulnerability has been resolved:

ext4: Fix possible corruption when moving a directory (CVE-2023-53137)

In the Linux kernel, the following vulnerability has been resolved:

scsi: core: Remove the /proc/scsi/${proc_name} directory earlier (CVE-2023-53140)

In the Linux kernel, the following vulnerability has been resolved:

ila: do not generate empty messages in ila_xlat_nl_cmd_get_mapping() (CVE-2023-53141)

In the Linux kernel, the following vulnerability has been resolved:

ext4: fix another off-by-one fsmap error on 1k block filesystems (CVE-2023-53143)

Tenable has extracted the preceding description block directly from the tested product 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

Run 'yum update kernel' to update your system.

Plugin Details

Severity: High

ID: 176754

File Name: al2_ALASKERNEL-5_15-2023-019.nasl

Version: 1.5

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 6/6/2023

Updated: 8/4/2025

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2023-2235

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:kernel-livepatch-5.15.104-63.140, p-cpe:/a:amazon:linux:perf, p-cpe:/a:amazon:linux:bpftool, p-cpe:/a:amazon:linux:perf-debuginfo, p-cpe:/a:amazon:linux:kernel-tools-debuginfo, p-cpe:/a:amazon:linux:kernel-debuginfo-common-aarch64, p-cpe:/a:amazon:linux:kernel-tools, p-cpe:/a:amazon:linux:kernel-devel, p-cpe:/a:amazon:linux:python-perf-debuginfo, p-cpe:/a:amazon:linux:kernel, p-cpe:/a:amazon:linux:kernel-debuginfo, p-cpe:/a:amazon:linux:kernel-headers, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:bpftool-debuginfo, p-cpe:/a:amazon:linux:kernel-tools-devel, p-cpe:/a:amazon:linux:kernel-debuginfo-common-x86_64, p-cpe:/a:amazon:linux:python-perf

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/15/2023

Vulnerability Publication Date: 5/1/2023

Reference Information

CVE: CVE-2022-50021, CVE-2023-2235, CVE-2023-30456, CVE-2023-53075, CVE-2023-53084, CVE-2023-53087, CVE-2023-53089, CVE-2023-53091, CVE-2023-53096, CVE-2023-53100, CVE-2023-53101, CVE-2023-53103, CVE-2023-53109, CVE-2023-53111, CVE-2023-53117, CVE-2023-53121, CVE-2023-53123, CVE-2023-53131, CVE-2023-53133, CVE-2023-53136, CVE-2023-53137, CVE-2023-53140, CVE-2023-53141, CVE-2023-53143

Detections

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